BMR
2,715kcal
at rest
Sedentary
3,258kcal
×1.2
Lightly active
3,733kcal
×1.375
Moderately active
4,208kcal
×1.55
Show the math
BMR = 10 × 181.4 kg + 6.25 × 175.3 cm − 5 × 40 + 5 = 2,715 kcal
TDEE = 2,715 × 1.375 = 3,733 kcal/day
TDEE by age and activity
Daily calories burned for a 400 lb man, 5 ft 9 in tall, by age and activity level.
| Age | Sedentary | Lightly active | Moderately active | Very active | Extra active |
|---|---|---|---|---|---|
| Age 20 | 3,378 | 3,870 | 4,363 | 4,855 | 5,348 |
| Age 30 | 3,318 | 3,802 | 4,285 | 4,769 | 5,253 |
| Age 40 | 3,258 | 3,733 | 4,208 | 4,683 | 5,158 |
| Age 50 | 3,198 | 3,664 | 4,130 | 4,597 | 5,063 |
| Age 60 | 3,138 | 3,595 | 4,053 | 4,510 | 4,968 |
| Age 70 | 3,078 | 3,527 | 3,975 | 4,424 | 4,873 |
TDEE by height
Same weight at age 40, different heights.
| Height | Sedentary | Light | Moderate |
|---|---|---|---|
| 5 ft 4 in | 3,162 | 3,624 | 4,085 |
| 5 ft 6 in | 3,201 | 3,667 | 4,134 |
| 5 ft 8 in | 3,239 | 3,711 | 4,183 |
| 5 ft 10 in | 3,277 | 3,755 | 4,232 |
| 6 ft 0 in | 3,315 | 3,798 | 4,282 |
| 6 ft 2 in | 3,353 | 3,842 | 4,331 |
| 6 ft 4 in | 3,391 | 3,886 | 4,380 |
Calories to lose weight
| Goal | Calories/day | Change |
|---|---|---|
| Maintain | 3,733 | 0 |
| Lose 0.5 lb/week | 3,483 | -250 |
| Lose 1 lb/week | 3,233 | -500 |
| Lose 1.5 lb/week | 2,983 | -750 |
| Lose 2 lb/week | 2,733 | -1,000 |
Lightly active, age 40, 5 ft 9 in. * Raised to 1,500 kcal, a common minimum without medical supervision.
How to use it
- Enter your numbers. Switch between US and metric units at any time.
- Results update as you type, and the formula is shown so you can check it.
- Copy the link, save the plan on this device, or print it for your next appointment.
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These are estimates, not a diagnosis. A clinician can account for your health history and medicines.
Nearby weights
Common questions
How many calories does a 400 lb man burn a day?
About 2,715 calories at rest (BMR) and about 3,733 on a lightly active day, at 5 ft 9 in and age 40. Height, age and activity change it.
How many calories should a 400 lb man eat to lose weight?
About 3,233 a day for roughly 1 lb a week, if lightly active (a 500-calorie deficit).
Is this exact?
No. Formulas estimate averages within roughly 10% for most people. Track your weight for 2 to 3 weeks and adjust.