BMR
2,106kcal
at rest
Sedentary
2,528kcal
×1.2
Lightly active
2,896kcal
×1.375
Moderately active
3,265kcal
×1.55
Show the math
BMR = 10 × 145.1 kg + 6.25 × 162.6 cm − 5 × 40 − 161 = 2,106 kcal
TDEE = 2,106 × 1.375 = 2,896 kcal/day
TDEE by age and activity
Daily calories burned for a 320 lb woman, 5 ft 4 in tall, by age and activity level.
| Age | Sedentary | Lightly active | Moderately active | Very active | Extra active |
|---|---|---|---|---|---|
| Age 20 | 2,648 | 3,034 | 3,420 | 3,806 | 4,192 |
| Age 30 | 2,588 | 2,965 | 3,343 | 3,720 | 4,097 |
| Age 40 | 2,528 | 2,896 | 3,265 | 3,634 | 4,002 |
| Age 50 | 2,468 | 2,828 | 3,188 | 3,547 | 3,907 |
| Age 60 | 2,408 | 2,759 | 3,110 | 3,461 | 3,812 |
| Age 70 | 2,348 | 2,690 | 3,033 | 3,375 | 3,717 |
TDEE by height
Same weight at age 40, different heights.
| Height | Sedentary | Light | Moderate |
|---|---|---|---|
| 5 ft 0 in | 2,452 | 2,809 | 3,167 |
| 5 ft 2 in | 2,490 | 2,853 | 3,216 |
| 5 ft 4 in | 2,528 | 2,896 | 3,265 |
| 5 ft 6 in | 2,566 | 2,940 | 3,314 |
| 5 ft 8 in | 2,604 | 2,984 | 3,363 |
| 5 ft 10 in | 2,642 | 3,027 | 3,413 |
Calories to lose weight
| Goal | Calories/day | Change |
|---|---|---|
| Maintain | 2,896 | 0 |
| Lose 0.5 lb/week | 2,646 | -250 |
| Lose 1 lb/week | 2,396 | -500 |
| Lose 1.5 lb/week | 2,146 | -750 |
| Lose 2 lb/week | 1,896 | -1,000 |
Lightly active, age 40, 5 ft 4 in. * Raised to 1,200 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 320 lb woman burn a day?
About 2,106 calories at rest (BMR) and about 2,896 on a lightly active day, at 5 ft 4 in and age 40. Height, age and activity change it.
How many calories should a 320 lb woman eat to lose weight?
About 2,396 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.