Calorie Calculator
Estimate daily energy needs from body measurements, age, activity, and an optional goal adjustment.
Estimated BMR: 1427 kcal/day.
Activity multiplier: 1.55.
How to use this calculator
- Choose the equation sex and activity level, then enter age, weight, height, and any cautious energy adjustment.
- Review the live result and use Copy result when you need to share it.
How the calculation works
The Mifflin–St Jeor BMR estimate is multiplied by an activity factor, then the selected adjustment is added.
Formula
The Mifflin–St Jeor BMR estimate is multiplied by an activity factor, then the selected adjustment is added.
Step-by-step calculation
- Choose the equation sex and activity level, then enter age, weight, height, and any cautious energy adjustment.
- The Mifflin–St Jeor BMR estimate is multiplied by an activity factor, then the selected adjustment is added.
- Check the displayed result, then copy it if needed.
Worked example
A moderately active 35-year-old woman at 70 kg and 170 cm has an estimated expenditure near 2,200 kcal/day before adjustment.
Risk guidance
Frequently asked questions
Does this tool send my inputs anywhere?
No. The interactive calculation runs in your browser and this site does not submit tool inputs to a backend.
How should I use the result?
Check that the entered units and values match your situation, especially around dates, breaks, and rounding.
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