Example 01
1.5kg at 20 minutes per 500g, plus 20
1,500 ÷ 500 × 20 + 20 = 80 minutes, or 1 hour 20 minutes.
Time it by weight
Cooking Time Calculator
Turn instructions such as “20 minutes per 500g plus 20 minutes” into a clear total cooking time.
The simple formula
How to calculate cooking time by weight
Divide the actual weight by the recipe’s reference weight, multiply by the minutes in the rate, then add any fixed time.
Example 02
4lb at 15 minutes per pound, plus 15
4 ÷ 1 × 15 + 15 = 75 minutes, or 1 hour 15 minutes.
Example 03
900g at 25 minutes per 500g, plus 25
900 ÷ 500 × 25 + 25 = 70 minutes, or 1 hour 10 minutes.
Use the timing from your recipe
Cooking methods and foods need different temperatures, timing, resting periods, and safe internal temperatures. This calculator deliberately uses the instruction you enter instead of guessing a rate from the food name.
When the recipe gives a range, calculate both ends and begin checking at the earlier time. Resting time should be kept separate unless the recipe includes it in the stated formula.
Questions answered
Cooking time FAQ
How do I calculate cooking time by weight?
Divide the food weight by the reference weight, multiply by the stated minutes, then add any fixed time.
Can I mix kilograms and minutes per pound?
Yes. The calculator converts both weights internally before applying the formula.
Does the finish time include resting?
Only if you include resting as additional minutes. Otherwise, the finish time represents the calculated cooking period.
Does this prove food is safe to eat?
No. Verify safety-sensitive dishes with a food thermometer and current official guidance.
Keep the recipe with the result
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