ClarityHow to use this tool
- Enter weight, height, age, sex used in the equation.
- Select Calculate to view the result.
- Check the method and assumptions below before using the result.
The method, explained
Estimated resting kcal/day = 10 × weight (kg) + 6.25 × height (cm) − 5 × age + coefficient. The original equation uses +5 for men and −161 for women.
For a 30-year-old using the male coefficient at 70 kg and 175 cm, the estimate is 1,648.75 kcal/day.
What to keep in mind
This equation estimates resting expenditure rather than measuring metabolism. It excludes activity and is not a calorie intake target. Not intended for pregnancy, children, or clinical nutrition decisions.
Reference: Original Mifflin–St Jeor study
Common questions
Does this include exercise?
No. Resting energy and total daily energy expenditure are different. Activity requires additional energy.
Why does the form ask for a sex coefficient?
The published equation uses two sex-specific coefficients. It may not represent every individual accurately; clinical assessment can offer a more suitable estimate.
Methodology maintained by ClarityKit. How these tools are built and checked.