BMR
1,199kcal
at rest
Sedentary
1,439kcal
×1.2
Lightly active
1,649kcal
×1.375
Moderately active
1,859kcal
×1.55
Show the math
BMR = 10 × 54.4 kg + 6.25 × 162.6 cm − 5 × 40 − 161 = 1,199 kcal
TDEE = 1,199 × 1.375 = 1,649 kcal/day
TDEE by age and activity
Daily calories burned for a 120 lb woman, 5 ft 4 in tall, by age and activity level.
| Age | Sedentary | Lightly active | Moderately active | Very active | Extra active |
|---|---|---|---|---|---|
| Age 20 | 1,559 | 1,787 | 2,014 | 2,241 | 2,469 |
| Age 30 | 1,499 | 1,718 | 1,936 | 2,155 | 2,374 |
| Age 40 | 1,439 | 1,649 | 1,859 | 2,069 | 2,279 |
| Age 50 | 1,379 | 1,580 | 1,781 | 1,983 | 2,184 |
| Age 60 | 1,319 | 1,512 | 1,704 | 1,896 | 2,089 |
| Age 70 | 1,259 | 1,443 | 1,626 | 1,810 | 1,994 |
TDEE by height
Same weight at age 40, different heights.
| Height | Sedentary | Light | Moderate |
|---|---|---|---|
| 5 ft 0 in | 1,363 | 1,562 | 1,761 |
| 5 ft 2 in | 1,401 | 1,605 | 1,810 |
| 5 ft 4 in | 1,439 | 1,649 | 1,859 |
| 5 ft 6 in | 1,477 | 1,693 | 1,908 |
| 5 ft 8 in | 1,515 | 1,736 | 1,957 |
| 5 ft 10 in | 1,553 | 1,780 | 2,007 |
Calories to lose weight
| Goal | Calories/day | Change |
|---|---|---|
| Maintain | 1,649 | 0 |
| Lose 0.5 lb/week | 1,399 | -250 |
| Lose 1 lb/week | 1,200 * | -500 |
| Lose 1.5 lb/week | 1,200 * | -750 |
| Lose 2 lb/week | 1,200 * | -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 120 lb woman burn a day?
About 1,199 calories at rest (BMR) and about 1,649 on a lightly active day, at 5 ft 4 in and age 40. Height, age and activity change it.
How many calories should a 120 lb woman eat to lose weight?
About 1,200 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.