semkuTDEE calculator
Enter your age, sex, height, weight and activity level to estimate daily calorie needs; add body fat to compare a second formula.
Daily calorie needs by activity level
| Activity level | Activity factor | TDEE (kcal/day) |
|---|---|---|
| SedentaryLittle or no exercise, with most of the day spent sitting. | 1.2 | 2,139 |
| Lightly activeLight exercise and some movement during the day. | 1.375 | 2,451 |
| Moderately activeSelectedRegular moderate exercise and an active daily routine. | 1.55 | 2,763 |
| Very activeFrequent strenuous exercise or a physically demanding daily routine. | 1.725 | 3,075 |
| Extra activeVery strenuous exercise combined with substantial physical work. | 1.9 | 3,387 |
BMR = 10W + 6.25H − 5A + s, where W is weight in kg, H is height in cm, A is age in years, and s is +5 for male or −161 for female.
Calculation rules
Mifflin-St Jeor estimates BMR as 10W + 6.25H − 5A + s, with kilograms, centimeters and years, using +5 for male or −161 for female. When body fat is entered, Katch-McArdle is also shown: 370 + 21.6 × lean mass in kg, where lean mass is weight × (1 − body fat / 100). [1][2]
TDEE is the unrounded BMR estimate multiplied by an activity factor: Sedentary 1.2, Lightly active 1.375, Moderately active 1.55, Very active 1.725 or Extra active 1.9. These are conventional estimates, not individual measurements; results are rounded to whole kcal/day only for display. [3]
This calculator accepts ages 15–80. Estimates do not account for individual metabolic differences, medical conditions or pregnancy.
[3] Activity factors are the conventional multipliers specified for this calculator; they are not coefficients from the Mifflin-St Jeor study.
Frequently asked questions
- What is the difference between BMR and TDEE?
- BMR estimates energy used at rest; TDEE applies an activity factor to estimate daily calorie needs.
- Which formula does this TDEE calculator use?
- Mifflin-St Jeor is the default; entering body fat also shows a Katch-McArdle estimate based on lean mass.
- Do I need to know my body fat percentage?
- No. Leave it blank to calculate with age, sex, height, weight and activity using Mifflin-St Jeor.
- Why do the activity levels give different calorie needs?
- Each level applies a different multiplier to the same unrounded BMR estimate; choose the description closest to your usual activity.
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Calculations run in your browser without sending your calculation inputs or results to the server. See “Privacy on this page” for information about access data.