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Egg Boiling Time Physics Calculator — result sheet
Estimate egg heating time from mass, starting temperature, water temperature, and a selected center-temperature target.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Time = 0.447 × mass^(2/3) × ln(0.76 × (starting temperature − water temperature) ÷ (target center temperature − water temperature)); the target is 63, 68, or 75 °C for the selected doneness scenario.
An egg heats inward by diffusion, so mass and temperature gaps matter more than a single universal kitchen timer. This worksheet exposes a simplified spherical-egg model and rounds the result into a practical timer setting.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Egg mass — g; minimum 20; maximum 150
- Egg starting temperature — °C; minimum 0; maximum 80
- Water temperature — °C; minimum 40; maximum 110
- Center-temperature target — 3 choices
Worked example
| Input | Value |
|---|---|
| Egg mass | 57 |
| Egg starting temperature | 4 |
| Water temperature | 100 |
| Center-temperature target | soft |
The simplified model estimates about 4.5 minutes, or a timer setting of about 4 minutes 32 seconds, for a 57 g egg reaching the soft-center scenario.
Assumptions and limits
- The egg is modeled as a homogeneous object and is placed into water that is already at the entered temperature.
- The target is a center-temperature scenario, not a direct measurement of firmness or food safety.
- The 0.447 calibration factor expresses the simplified thermal-property convention in minutes for grams raised to the two-thirds power.
- The egg remains substantially immersed and water temperature does not collapse during the modeled interval.
- Shell thickness, shape, white-to-yolk ratio, convection, pan loading, and carryover cooking are not separately solved.
- Altitude can change the attainable boiling temperature; enter the actual water temperature instead of assuming 100 °C when needed.
- Use current local food-safety guidance and a thermometer when doneness or safety has consequences.
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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