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Lux to Foot-Candle Converter — result sheet
Convert an illuminance value between lux and foot-candles using the NIST conversion factor.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: 1 foot-candle = 10.76391 lux; lux = foot-candles × 10.76391.
Lux and foot-candles describe illuminance, not the total light output of a lamp. This direct conversion keeps the two unit systems separate from assumptions about room size or fixture performance.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Conversion direction — 2 choices
- Input illuminance — minimum 0; maximum 1000000000
Worked example
| Input | Value |
|---|---|
| Conversion direction | lux-to-footcandles |
| Input illuminance | 500 |
500 lux ≈ 46.4516 foot-candles.
Assumptions and limits
- The input is an illuminance measurement or estimate, not luminous flux.
- The NIST factor 10.76391 is used for foot-candle to lux conversion.
- No claim is made about code compliance, visual comfort, or whether a room is adequately lit.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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