Sedentary
1,548kcal
140 lb, 5 ft 4 in
Lightly active
1,774kcal
Moderately active
2,000kcal
Very active
2,225kcal
Show the math
BMR = 10 × 63.5 kg + 6.25 × 162.6 cm − 5 × 40 − 161 = 1,290
Calories per day by weight and activity
A 40-year-old woman, 5 ft 4 in tall.
| Weight | Sedentary | Light | Moderate | Very active |
|---|---|---|---|---|
| 120 lb | 1,439 | 1,649 | 1,859 | 2,069 |
| 140 lb | 1,548 | 1,774 | 2,000 | 2,225 |
| 160 lb | 1,657 | 1,899 | 2,140 | 2,382 |
| 180 lb | 1,766 | 2,023 | 2,281 | 2,538 |
| 200 lb | 1,875 | 2,148 | 2,421 | 2,695 |
| 220 lb | 1,983 | 2,273 | 2,562 | 2,851 |
| 240 lb | 2,092 | 2,397 | 2,703 | 3,008 |
| 260 lb | 2,201 | 2,522 | 2,843 | 3,164 |
Calories to lose weight at 40
| Weight | Lose 1 lb/week | Lose 0.5 lb/week |
|---|---|---|
| 120 lb | 1,200 | 1,399 |
| 140 lb | 1,274 | 1,524 |
| 160 lb | 1,399 | 1,649 |
| 180 lb | 1,523 | 1,773 |
| 200 lb | 1,648 | 1,898 |
| 220 lb | 1,773 | 2,023 |
| 240 lb | 1,897 | 2,147 |
| 260 lb | 2,022 | 2,272 |
Lightly active. Never below 1,200 kcal without medical supervision.
How age changes it
Each extra decade lowers resting burn by about 50 calories in the Mifflin-St Jeor equation, all else equal. Muscle matters more: strength training and enough protein help keep your burn up as you age.
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 ages
Common questions
How many calories should a 40-year-old woman eat?
About 1,548 to 2,000 a day at 140 lb, depending on activity, to maintain weight. Your weight and height shift it; see the table.
How many calories should a 40-year-old woman eat to lose weight?
Roughly 500 fewer than maintenance for about 1 lb a week, for example 1,274 a day at 140 lb if lightly active.