Unit Converters

Length Converter

Convert metric and international customary lengths, including statute and nautical miles, using defined factors.

You enter: Length · From unit · To unit

Example: 1.609344 km

Open Length Converter →

Area Converter

Convert square metric and customary units, hectares, and international acres without confusing linear and area factors.

You enter: Area · From unit · To unit

Example: 4046.8564224 m2

Open Area Converter →

Volume Converter

Convert liters, milliliters, cubic units, US liquid gallons, and Imperial gallons with explicit gallon definitions.

You enter: Volume · From unit · To unit

Example: 3.785411784 l

Open Volume Converter →

Speed Converter

Convert meters per second, kilometers per hour, miles per hour, feet per second, and knots.

You enter: Speed · From unit · To unit

Example: 96.56064 km/h

Open Speed Converter →

Acres to Ares Conversion Calculator

Convert an area in acres to ares and square metres using an exact metric relationship.

You enter: Area in acres

Example: 1 acre =40.468564224 ares =4,046.8564224 square metres.

Open Acres to Ares Conversion Calculator →

Angstroms to Nanometres Converter

Convert a length in angstroms to nanometres and metres.

You enter: Length in angstroms

Example: 10 Å =1 nm =0.000000001 m.

Open Angstroms to Nanometres Converter →

Centimetres to Feet and Inches Converter

Convert centimetres to total inches and a feet-plus-inches display.

You enter: Length in centimetres

Example: 180 cm =70.8661 inches =5 ft 10.8661 in.

Open Centimetres to Feet and Inches Converter →

Fuel Economy L/100 km to km/L and MPG Converter

Convert metric fuel economy in litres per 100 kilometres to kilometres per litre and US miles per gallon.

You enter: Fuel economy in L/100 km

Example: 7 L/100 km =14.2857 km/L ≈33.6021 US MPG.

Open Fuel Economy L/100 km to km/L and MPG Converter →

Knots to Kilometres per Hour Converter

Convert speed in nautical knots to kilometres per hour and miles per hour.

You enter: Speed in knots

Example: 20 knots =37.04 km/h ≈23.0156 MPH.

Open Knots to Kilometres per Hour Converter →

Kilometres to Miles Converter

Convert a distance in kilometres to statute miles and metres.

You enter: Distance in kilometres

Example: 10 km ≈6.213711 miles =10,000 metres.

Open Kilometres to Miles Converter →

Litres to Cubic Centimetres Converter

Convert liquid volume in litres to cubic centimetres and millilitres.

You enter: Volume in litres

Example: 2.5 L =2,500 cm³ =2,500 mL.

Open Litres to Cubic Centimetres Converter →

Acres to Hectares Converter

Convert international acres into hectares and square metres for land-area planning.

You enter: Area in acres

Example: 2 acres = 0.80937128448 hectares = 8,093.7128448 square metres.

Open Acres to Hectares Converter →

Ares to Hectares Converter

Convert ares into hectares and square metres using the metric land-area relationship.

You enter: Area in ares

Example: 250 ares = 2.5 hectares = 25,000 square metres.

Open Ares to Hectares Converter →

CCF to Gallons Converter

Convert hundred cubic feet of gas or water volume into cubic feet, US gallons, and litres.

You enter: Volume in CCF

Example: 5 CCF = 500 cubic feet = about 3,740.25974 US gallons = 14,158.423296 litres.

Open CCF to Gallons Converter →

Gaj to Square-Yard Converter

Convert a regional gaj area into square yards, square feet, and square metres using a visible local factor.

You enter: Area in gaj · Local square feet per gaj

Example: 100 gaj at 9 ft²/gaj = 900 ft² = 100 square yards = 83.612736 m².

Open Gaj to Square-Yard Converter →

Price per Litre to Price per Gallon Converter

Convert a unit price per litre into a price per US or imperial gallon without changing the currency.

You enter: Price per litre · Gallon definition

Example: 1.50 per litre = 5.678117676 per US gallon.

Open Price per Litre to Price per Gallon Converter →

Drawing Scale Converter

Convert a drawing length to a real length or reverse it using a clear 1-to-N scale denominator.

You enter: Entered length · Scale denominator · Conversion direction

Example: 5 drawing units at 1:100 represents 500 real units.

Open Drawing Scale Converter →

Gallons to Mass and Tons Calculator

Convert a liquid volume into kilograms and US short or metric tonnes from density and gallon definition.

You enter: Volume · Density · Gallon definition

Example: 100 US gallons of a 1 kg/L liquid = 378.5411784 kg, about 0.378541 metric tonnes.

Open Gallons to Mass and Tons Calculator →

Astronomical Unit Converter

Convert astronomical units to metres, kilometres, and miles using the exact SI-defined astronomical unit.

You enter: Astronomical units (au)

Example: 1 au = 149,597,870.7 km, or about 92,955,807.3 international miles.

Open Astronomical Unit Converter →

Cubic Centimetres to Millilitres Converter

Convert cubic centimetres into millilitres, litres, and cubic metres using the exact volume equivalence.

You enter: Cubic centimetres

Example: 250 cm³ = 250 mL = 0.25 L = 0.00025 m³.

Open Cubic Centimetres to Millilitres Converter →

Centimetres to Kilometres Converter

Convert a length in centimetres into metres, kilometres, millimetres, and inches.

You enter: Centimetres

Example: 250,000 cm = 2,500 m = 2.5 km = 2,500,000 mm = 98,425.2 in.

Open Centimetres to Kilometres Converter →

US Cups to Pints Converter

Convert US customary cups into US pints, fluid ounces, quarts, and gallons with the serving-volume convention stated.

You enter: US customary cups

Example: 4 US cups = 2 US pints = 32 US fluid ounces = 1 US quart = 0.25 US gallon.

Open US Cups to Pints Converter →

Hectares to Acres Converter

Convert hectares into square metres, square kilometres, international acres, and square feet.

You enter: Hectares

Example: 2.5 ha = 25,000 m² = 0.25 km² = about 6.17763 international acres.

Open Hectares to Acres Converter →

Knots to Miles per Hour Converter

Convert nautical speed in knots into international miles per hour, kilometres per hour, and metres per second.

You enter: Speed in knots

Example: 20 kn = 23.0156 mph = 37.04 km/h = 10.2889 m/s.

Open Knots to Miles per Hour Converter →

Litres to Centilitres Converter

Convert litres into centilitres, millilitres, cubic centimetres, and cubic metres.

You enter: Litres

Example: 2.5 L = 250 cL = 2,500 mL = 2,500 cm³ = 0.0025 m³.

Open Litres to Centilitres Converter →

Light-Year Distance Converter

Convert light-years into kilometres, metres, astronomical units, and international miles using light speed and a Julian year.

You enter: Light-years

Example: 1 light-year = 9.46073047258 trillion km = about 63,241.077 au.

Open Light-Year Distance Converter →

Acreage from Length and Width

Calculate land area from rectangular dimensions and display the result in square feet, acres, and hectares.

You enter: Length · Width

Example: 20,000 ft² = 0.459137 acres

Open Acreage from Length and Width →

Cubic Centimeters to Grams Converter

Convert a measured volume in cubic centimeters to mass when the material density is known.

You enter: Volume · Density

Example: 100 g

Open Cubic Centimeters to Grams Converter →

Land Cent to Square Meter Converter

Convert the land-area unit cent to square meters, square feet, and acres using the one-cent-per-hundredth-acre convention.

You enter: Land area

Example: 404.68564224 m²

Open Land Cent to Square Meter Converter →

Centimeters to Inches Converter

Convert centimetres into international inches and companion metric and imperial length units.

You enter: Centimeters

Example: 25.4 cm = 10 inches, 0.254 metres, 254 millimetres, and 0.83333333 feet.

Open Centimeters to Inches Converter →

Acres to Square Feet Converter

Convert international acres into square feet, square metres, hectares, and square yards with the unit basis stated.

You enter: International acres

Example: 1 international acre = 43,560 square feet, 4,046.8564224 square metres, 0.40468564224 hectares, and 4,840 square yards.

Open Acres to Square Feet Converter →

Drops to Milliliters Converter

Convert a counted number of drops to milliliters, liters, and microliters using the measured drop volume for the actual dispenser.

You enter: Number of drops · Milliliters per drop

Example: Twenty drops at 0.05 mL per drop equal 1 mL, 0.001 L, and 1,000 µL; the implied rate is 20,000 drops per liter.

Open Drops to Milliliters Converter →

Cubic Centimetres to US Fluid Ounces Converter

Convert cubic centimetres into US fluid ounces, millilitres, US cups, and litres while keeping volume ounces separate from mass ounces.

You enter: Cubic centimetres

Example: 250 cm³ = 250 mL ≈ 8.4535 US fluid ounces, 1.0567 US cups, and 0.25 L.

Open Cubic Centimetres to US Fluid Ounces Converter →

Weight and Mass Converter

Convert kilograms, grams, milligrams, metric tonnes, pounds, ounces, and stones as units of mass.

You enter: Mass · From unit · To unit

Example: 0.45359237 kg

Open Weight and Mass Converter →

Temperature Converter

Convert absolute temperatures among Celsius, Fahrenheit, and Kelvin, with absolute-zero validation.

You enter: Temperature · From scale · To scale

Example: 69.8 F

Open Temperature Converter →

Dimensional Weight and Chargeable Weight Calculator

Estimate volumetric shipping weight and choose the larger of actual and dimensional weight using a user-supplied divisor.

You enter: Package length · Package width · Package height · Dimensional divisor · Actual package weight

Example: Dimensional weight = 4.8; chargeable weight = 4.8 weight units.

Open Dimensional Weight and Chargeable Weight Calculator →

Celsius to Fahrenheit Converter

Convert a Celsius temperature to Fahrenheit and Kelvin.

You enter: Temperature in Celsius

Example: 20°C =68°F =293.15 K.

Open Celsius to Fahrenheit Converter →

Kelvin to Celsius Converter

Convert an absolute temperature in kelvin to Celsius and Fahrenheit.

You enter: Temperature in kelvin

Example: 293.15 K =20°C =68°F.

Open Kelvin to Celsius Converter →

Kilograms to Pounds Converter

Convert mass in kilograms to international pounds and grams.

You enter: Mass in kilograms

Example: 10 kg ≈22.0462262 lb =10,000 g.

Open Kilograms to Pounds Converter →

PPM to Milligrams per Litre Converter

Convert a dilute mass concentration in ppm into mg/L and g/L using solution density.

You enter: Concentration · Solution density

Example: 25 ppm in a 1.000 g/mL solution = 25 mg/L = 0.025 g/L.

Open PPM to Milligrams per Litre Converter →

Cubic Yards to Tons Calculator

Estimate material mass from cubic yards, bulk density, and a visible waste allowance in US short and metric tonnes.

You enter: Volume · Bulk density · Waste allowance

Example: 2 yd³ with 10% allowance is 59.4 ft³ and 5,940 lb, or 2.97 short tons.

Open Cubic Yards to Tons Calculator →

Grams to Fluid Ounces Converter

Convert mass into millilitres and US or imperial fluid ounces using an explicit material density.

You enter: Mass · Material density · Fluid-ounce definition

Example: 500 g of a 1 g/mL material = 500 mL = about 16.907 US fluid ounces.

Open Grams to Fluid Ounces Converter →

Celsius Temperature Converter

Convert a Celsius temperature into Fahrenheit, kelvin, and Rankine while keeping absolute-zero validation visible.

You enter: Temperature

Example: 20 °C = 68 °F = 293.15 K = 527.67 °R.

Open Celsius Temperature Converter →

Decagram to Gram Converter

Convert decagrams into grams, kilograms, milligrams, and pounds using SI mass prefixes and the international pound.

You enter: Decagrams

Example: 3.5 dag = 35 g = 0.035 kg = 35,000 mg = 0.07716 lb.

Open Decagram to Gram Converter →

Kilograms to Stones Converter

Convert kilograms into UK stones, pounds, grams, and tonnes using the international avoirdupois pound.

You enter: Kilograms

Example: 70 kg = 11.0231 stone = 154.324 lb = 70,000 g.

Open Kilograms to Stones Converter →

Micrograms to Milligrams Converter

Convert micrograms into milligrams, grams, nanograms, and kilograms while keeping SI prefixes explicit.

You enter: Micrograms

Example: 2,500 µg = 2.5 mg = 0.0025 g = 2,500,000 ng.

Open Micrograms to Milligrams Converter →

Cubic Feet to Pounds by Density

Estimate material mass in pounds from cubic feet, density, and an optional waste or handling allowance.

You enter: Volume · Density · Waste or handling allowance

Example: 1,000 lb

Open Cubic Feet to Pounds by Density →

Pounds per Minute Flow Converter

Convert mass flow in pounds per minute into kilograms per second, kilograms per hour, grams per second, and pounds per hour.

You enter: Mass flow

Example: 10 lb/min = 0.07559873 kg/s, 27.2155422 kg/h, 75.59872667 g/s, and 600 lb/h.

Open Pounds per Minute Flow Converter →

Carat Weight Conversion Calculator

Convert a gemstone mass between metric carats, points, grams, milligrams, and avoirdupois ounces without confusing carat weight with gold purity.

You enter: Value to convert · Input unit

Example: 1 metric carat equals 0.2 g, 200 mg, 100 points, and about 0.0070548 avoirdupois ounces.

Open Carat Weight Conversion Calculator →

mmol/L to mg/dL Calculator

Convert a selected laboratory analyte from mmol/L to mg/dL using its molecular weight, with a reverse-conversion check shown beside the answer.

You enter: Analyte · Concentration

Example: Glucose 5.5 mmol/L × 180.156 ÷ 10 = 99.0858 mg/dL.

Open mmol/L to mg/dL Calculator →

Density Unit Converter

Convert density values among common SI and mass-volume units.

You enter: Value · From unit · To unit

Example: 1 kg/m^3 = 0.001 g/cm^3.

Open Density Unit Converter →

Atmospheres to Pascals Converter

Convert standard atmospheres to pascals and kilopascals.

You enter: Pressure in standard atmospheres

Example: 1 atm =101,325 Pa =101.325 kPa.

Open Atmospheres to Pascals Converter →

Bar to PSI Converter

Convert pressure in bar to pounds per square inch and kilopascals.

You enter: Pressure in bar

Example: 1 bar =14.5037738 PSI =100 kPa.

Open Bar to PSI Converter →

dBm to Watts Converter

Convert a power level in dBm to watts and milliwatts.

You enter: Power in dBm

Example: 30 dBm =1,000 mW =1 W.

Open dBm to Watts Converter →

Kilopascals to PSI Converter

Convert pressure in kilopascals to pounds per square inch and bar.

You enter: Pressure in kilopascals

Example: 100 kPa ≈14.5037738 PSI =1 bar.

Open Kilopascals to PSI Converter →

CCF to Therms Calculator

Estimate natural-gas energy in therms and kilowatt-hours from CCF using an explicit heat-content input.

You enter: Gas volume · Heat content

Example: 10 CCF at 103,700 Btu/CCF = 10.37 therms, about 303.91 kWh.

Open CCF to Therms Calculator →

Natural Gas Volume and Energy Converter

Convert CCF, therms, cubic metres, and kilowatt-hours using explicit regional heat-content assumptions.

You enter: Input amount · Input unit · Therms per CCF · Kilowatt-hours per cubic metre

Example: 10 CCF at 1.037 therm/CCF = 10.37 therms and about 303.91 kWh.

Open Natural Gas Volume and Energy Converter →

Barometric Pressure Unit Converter

Convert a pressure reading in hectopascals into pascals, kilopascals, millimetres of mercury, inches of mercury, and psi.

You enter: Pressure

Example: 1013.25 hPa = 101.325 kPa, 760 mmHg, 29.9213 inHg, and 14.6959 psi.

Open Barometric Pressure Unit Converter →

Kilopascals to Atmospheres Converter

Convert kilopascals into standard atmospheres, pascals, psi, torr, and millimetres of mercury.

You enter: Kilopascals

Example: 101.325 kPa = 1 atm = 14.6959 psi = 760 torr.

Open Kilopascals to Atmospheres Converter →

CGS and SI Unit Converter

Convert compatible length, mass, force, and energy quantities between common CGS and SI units.

You enter: Value · From unit · To unit

Example: 0.00001 N

Open CGS and SI Unit Converter →

Atmospheres Pressure Converter

Convert standard atmospheres into pascals, kilopascals, bar, psi, and millimeters of mercury.

You enter: Pressure

Example: 101325 Pa = 101.325 kPa

Open Atmospheres Pressure Converter →

Bar Gauge to PSIG Converter

Convert a gauge pressure in bar to psig, absolute psi, and gauge kilopascals using an explicit atmospheric-pressure setting.

You enter: Gauge pressure · Atmospheric pressure

Example: 29.0075 psig; 43.7105 psi absolute

Open Bar Gauge to PSIG Converter →

KSI to MPa Pressure Converter

Convert pressure in kilopounds per square inch into megapascals, psi, pascals, and gigapascals with explicit unit relationships.

You enter: Pressure in ksi

Example: 5 ksi = 34.473786 MPa = 5,000 psi = 34,473,786.47 Pa = 0.034473786 GPa.

Open KSI to MPa Pressure Converter →

Pressure Unit Converter

Convert pressure among pascals, kilopascals, megapascals, bar, standard atmospheres, pounds per square inch, and millimeters of mercury.

You enter: Pressure · From unit · To unit

Example: 1 atm = 101.325 kPa.

Open Pressure Unit Converter →

Energy Unit Converter

Convert joules, kilojoules, megajoules, watt-hours, kilowatt-hours, calories, kilocalories, and British thermal units.

You enter: Energy · From unit · To unit

Example: 1 kWh = 3600000 J.

Open Energy Unit Converter →

Power Unit Converter

Convert watts, kilowatts, megawatts, mechanical horsepower, and British thermal units per hour.

You enter: Power · From unit · To unit

Example: 1 mechanical hp = 745.699871582 W.

Open Power Unit Converter →

Force Unit Converter

Convert newtons, kilonewtons, pounds-force, and kilogram-force through a shared SI base.

You enter: Force · From unit · To unit

Example: 1 lbf = 4.448221615 N.

Open Force Unit Converter →

Torque Unit Converter

Convert newton-meters, kilonewton-meters, pound-feet, pound-inches, kilogram-force meters, and kilogram-force centimeters.

You enter: Torque · From unit · To unit

Example: 100 lbf ft = 135.581794833 N m.

Open Torque Unit Converter →

Cycles per Second and RPM Converter

Convert a repeating rate between cycles per second, hertz, and revolutions per minute, then show the period.

You enter: Rate · Input unit

Example: 1 Hz = 1 second per cycle

Open Cycles per Second and RPM Converter →

Frequency Unit Converter

Convert hertz, kilohertz, megahertz, gigahertz, and revolutions per minute using cycles per second as the base.

You enter: Frequency · From unit · To unit

Example: 120 rpm = 2 Hz.

Open Frequency Unit Converter →

Capacitance Unit Converter

Convert capacitance values among farads and common SI-prefixed units.

You enter: Value · From unit · To unit

Example: 1 uF = 1000 nF.

Open Capacitance Unit Converter →

Angle Converter (Degrees and Radians)

Convert angles between degrees and radians.

You enter: Angle · From unit · To unit

Example: 3.1415926536 rad

Open Angle Converter (Degrees and Radians) →

Angle Degrees Radians and Turns Converter

Convert a degree angle into radians and full turns.

You enter: Angle in degrees

Example: 180° =3.141592654 radians =0.5 turns.

Open Angle Degrees Radians and Turns Converter →

Degrees to Radians Converter

Convert an angle in degrees to radians and turns.

You enter: Angle in degrees

Example: 90° =1.570796327 radians =0.25 turns.

Open Degrees to Radians Converter →

Decimal Degrees to DMS Converter

Convert signed decimal degrees into degree, arcminute, arcsecond, and total-arcsecond components.

You enter: Decimal degrees

Example: 12.3456° = 12° 20′ 44.16″; total: 44,444.16 arcseconds.

Open Decimal Degrees to DMS Converter →

Decimal Degrees and DMS Converter

Convert a signed decimal-degree coordinate to degrees-minutes-seconds or convert DMS back to decimal degrees.

You enter: Conversion direction · Decimal degrees · DMS degrees · DMS minutes · DMS seconds

Example: 40.7128 degrees = 40 degrees 42 minutes 46.08 seconds.

Open Decimal Degrees and DMS Converter →

Mesh to Micron Opening Converter

Estimate sieve pitch and opening size from mesh count and an explicit wire diameter.

You enter: Mesh count · Wire diameter

Example: 100 mesh has a 254 µm pitch; with 100 µm wire, the nominal opening is 154 µm.

Open Mesh to Micron Opening Converter →

Pixels to em and rem Converter

Convert a pixel value into em and rem units from the relevant parent and root font sizes.

You enter: Pixel value · Parent font size · Root font size

Example: 24 px equals 1.5 em in the parent context and 1.5 rem in the root context.

Open Pixels to em and rem Converter →

Mbps to Gbps and GB/s Converter

Convert megabits per second into gigabits per second, megabytes per second, gigabytes per second, and bits per second using decimal network units.

You enter: Megabits per second

Example: 1,000 Mb/s = 1 Gb/s = 125 MB/s = 0.125 GB/s = 1,000,000,000 bit/s.

Open Mbps to Gbps and GB/s Converter →

Cents to Dollars Converter

Convert a nonnegative number of US cents into dollars, whole dollars, and remaining cents without applying exchange rates.

You enter: Cents

Example: 1,250 cents = 12.50 US dollars, made up of 12 whole dollars and 50 remaining cents.

Open Cents to Dollars Converter →

Euro Cents to Euros Converter

Convert euro cents into euros, whole euros, and the remaining cent component without applying a foreign-exchange rate.

You enter: Euro cents

Example: 1,250 euro cents = €12.50, made up of 12 whole euros and 50 remaining cents.

Open Euro Cents to Euros Converter →

Custom-Rate Currency Converter

Convert an amount with a rate you supply instead of silently using stale or unverified live exchange data.

You enter: Amount · Quote units per one base unit · Base currency code · Quote currency code

Example: 100 USD at 1.08 EUR per USD = 108 EUR.

Open Custom-Rate Currency Converter →

Shoe Size Conversion

Convert an approximate shoe size among US men's, US women's, UK, EU, and Japanese length systems.

You enter: Known shoe size · Known sizing system

Example: The calculator estimates a foot length and corresponding UK, EU, US women, and Japanese sizes.

Open Shoe Size Conversion →

Binary to Hexadecimal Converter

Convert a nonnegative binary integer into hexadecimal and decimal representations.

You enter: Binary digits

Example: 11010110₂ =214₁₀ =0xD6.

Open Binary to Hexadecimal Converter →

Bytes Bits and Decimal Storage Converter

Convert a byte count into bits, decimal kilobytes, and decimal megabytes.

You enter: Bytes

Example: 1,048,576 bytes =8,388,608 bits =1,048.576 kB =1.048576 MB.

Open Bytes Bits and Decimal Storage Converter →

Decimal Integer to Hexadecimal Converter

Convert a signed whole-number value into hexadecimal notation.

You enter: Decimal integer

Example: 214₁₀ =0xD6.

Open Decimal Integer to Hexadecimal Converter →

Decimal Inches to Fractional Inches Converter

Convert decimal inches to the nearest fraction using a selected denominator.

You enter: Length in decimal inches · Fraction denominator

Example: 5.75 inches =5 3/4 inches exactly at sixteenths.

Open Decimal Inches to Fractional Inches Converter →

Crore to Lakh Converter

Convert a value expressed in crores into lakhs and the underlying count of units.

You enter: Value in crores

Example: 2 crore = 200 lakh = 20,000,000 units.

Open Crore to Lakh Converter →

Crore to Million Converter

Convert crores into millions and billions while keeping the underlying count visible.

You enter: Value in crores

Example: 2 crore = 20 million = 0.02 billion units.

Open Crore to Million Converter →

Million to Lakh Converter

Convert millions into lakhs and crores for comparing international and South Asian number formats.

You enter: Value in millions

Example: 5 million = 50 lakh = 0.5 crore = 5,000,000 units.

Open Million to Lakh Converter →

Katha to Square-Feet Converter

Convert katha into square feet, square metres, and acres with a user-supplied regional katha factor.

You enter: Area in katha · Local square feet per katha

Example: 3 katha at 720 ft²/katha = 2,160 ft² = 200.6705664 m², about 0.0495868 acres.

Open Katha to Square-Feet Converter →

Paper Quantity and Ream Calculator

Estimate sheets and reams from page count, copies, print sides, and a visible waste allowance.

You enter: Pages per copy · Number of copies · Printed sides per sheet · Waste allowance

Example: Base need is 600 sheets; with 5% waste, order 630 sheets or 1.26 reams.

Open Paper Quantity and Ream Calculator →

Pixels to Inches Converter

Convert a pixel dimension into inches and centimetres from an explicit pixels-per-inch resolution.

You enter: Pixel dimension · Resolution

Example: 1,920 pixels at 96 px/in = 20 inches = 50.8 centimetres.

Open Pixels to Inches Converter →

Billion to Trillion Converter

Convert a decimal count expressed in billions into trillions, millions, and the underlying absolute count.

You enter: Value in billions

Example: 2.5 billion = 0.0025 trillion = 2,500 million = 2,500,000,000.

Open Billion to Trillion Converter →

Binary to Octal Converter

Convert a nonnegative binary integer into decimal, octal, and hexadecimal representations.

You enter: Binary integer

Example: 110101₂ = 53₁₀ = 65₈ = 35₁₆.

Open Binary to Octal Converter →

Day to Time-Unit Converter

Convert days into hours, minutes, seconds, and weeks using a fixed 24-hour day.

You enter: Days

Example: 2.5 days = 60 hours = 3,600 minutes = 216,000 seconds = 0.357143 weeks.

Open Day to Time-Unit Converter →

Kilobytes to Megabytes Converter

Convert decimal kilobytes into bytes, megabytes, gigabytes, and binary mebibytes with the convention shown.

You enter: Kilobytes (decimal)

Example: 5,000 kB = 5,000,000 bytes = 5 MB = 0.005 GB = about 4.76837 MiB.

Open Kilobytes to Megabytes Converter →

Minutes to Decimal Time Converter

Convert a duration in minutes into decimal hours, decimal days, seconds, and a readable hours-and-minutes value.

You enter: Minutes

Example: 150 minutes = 2.5 decimal hours = 0.104167 days = 9,000 seconds = 2 h 30 min.

Open Minutes to Decimal Time Converter →

Binary and Decimal Base Converter

Convert a nonnegative whole number between binary notation and decimal notation while keeping every bit visible.

You enter: Value · Conversion direction

Example: 45

Open Binary and Decimal Base Converter →

Hex Color to RGB and HSL Converter

Decode a three-, six-, or eight-digit hexadecimal color into RGB, HSL, alpha, and relative luminance values.

You enter: Hex color

Example: rgb(30, 136, 229)

Open Hex Color to RGB and HSL Converter →

SCFM to SI Flow Converter

Convert standard cubic feet per minute into cubic metres per second, cubic metres per hour, and litres per second.

You enter: Standard cubic feet per minute

Example: 100 scfm = 0.04719474432 m³/s, 169.901079552 m³/h, and 47.19474432 L/s.

Open SCFM to SI Flow Converter →

Decimal to Octal Converter

Convert a safe-range decimal integer to prefixed octal and binary notation while preserving negative values and showing the digit count.

You enter: Decimal integer

Example: 214 in base 10 is 0o326 in base 8 and 11010110 in base 2; the octal magnitude has three digits.

Open Decimal to Octal Converter →

Days to Months Duration Converter

Convert elapsed days to months and years using an average Gregorian, 30-day billing, or 365-day-year convention.

You enter: Elapsed days · Month convention

Example: 90 elapsed days are about 2.956 months and 0.2463 years under the average Gregorian-month convention; a 30-day billing convention gives exactly 3 months.

Open Days to Months Duration Converter →

Hours to Years Duration Converter

Convert elapsed hours to years, 24-hour days, and minutes using an explicit hours-per-year convention.

You enter: Elapsed hours · Hours per modeled year

Example: 8,760 hours equal 1 modeled year, 365 24-hour days, and 525,600 minutes under the 8,760-hours-per-year convention.

Open Hours to Years Duration Converter →

Numbers to Words Converter

Convert whole numbers from zero through 999,999,999 into canonical English words, or parse those words back into a decimal integer.

You enter: Conversion direction · Value to convert

Example: The decimal integer 2026 becomes two thousand twenty-six; parsing those words returns 2026.

Open Numbers to Words Converter →