Sedentary
2,033kcal
175 lb, 5 ft 9 in
Lightly active
2,329kcal
Moderately active
2,626kcal
Very active
2,922kcal
Show the math
BMR = 10 × 79.4 kg + 6.25 × 175.3 cm − 5 × 40 + 5 = 1,694
Calories per day by weight and activity
A 40-year-old man, 5 ft 9 in tall.
| Weight | Sedentary | Light | Moderate | Very active |
|---|---|---|---|---|
| 120 lb | 1,734 | 1,986 | 2,239 | 2,492 |
| 140 lb | 1,842 | 2,111 | 2,380 | 2,649 |
| 160 lb | 1,951 | 2,236 | 2,520 | 2,805 |
| 180 lb | 2,060 | 2,361 | 2,661 | 2,962 |
| 200 lb | 2,169 | 2,485 | 2,802 | 3,118 |
| 220 lb | 2,278 | 2,610 | 2,942 | 3,275 |
| 240 lb | 2,387 | 2,735 | 3,083 | 3,431 |
| 260 lb | 2,496 | 2,860 | 3,224 | 3,588 |
Calories to lose weight at 40
| Weight | Lose 1 lb/week | Lose 0.5 lb/week |
|---|---|---|
| 120 lb | 1,500 | 1,736 |
| 140 lb | 1,611 | 1,861 |
| 160 lb | 1,736 | 1,986 |
| 180 lb | 1,861 | 2,111 |
| 200 lb | 1,985 | 2,235 |
| 220 lb | 2,110 | 2,360 |
| 240 lb | 2,235 | 2,485 |
| 260 lb | 2,360 | 2,610 |
Lightly active. Never below 1,500 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 man eat?
About 2,033 to 2,626 a day at 175 lb, depending on activity, to maintain weight. Your weight and height shift it; see the table.
How many calories should a 40-year-old man eat to lose weight?
Roughly 500 fewer than maintenance for about 1 lb a week, for example 1,829 a day at 175 lb if lightly active.