Sedentary
1,877kcal
175 lb, 5 ft 9 in
Lightly active
2,151kcal
Moderately active
2,424kcal
Very active
2,698kcal
Show the math
BMR = 10 × 79.4 kg + 6.25 × 175.3 cm − 5 × 66 + 5 = 1,564
Calories per day by weight and activity
A 66-year-old man, 5 ft 9 in tall.
| Weight | Sedentary | Light | Moderate | Very active |
|---|---|---|---|---|
| 120 lb | 1,578 | 1,808 | 2,038 | 2,268 |
| 140 lb | 1,686 | 1,932 | 2,178 | 2,424 |
| 160 lb | 1,795 | 2,057 | 2,319 | 2,581 |
| 180 lb | 1,904 | 2,182 | 2,460 | 2,737 |
| 200 lb | 2,013 | 2,307 | 2,600 | 2,894 |
| 220 lb | 2,122 | 2,431 | 2,741 | 3,050 |
| 240 lb | 2,231 | 2,556 | 2,881 | 3,207 |
| 260 lb | 2,340 | 2,681 | 3,022 | 3,363 |
Calories to lose weight at 66
| Weight | Lose 1 lb/week | Lose 0.5 lb/week |
|---|---|---|
| 120 lb | 1,500 | 1,558 |
| 140 lb | 1,500 | 1,682 |
| 160 lb | 1,557 | 1,807 |
| 180 lb | 1,682 | 1,932 |
| 200 lb | 1,807 | 2,057 |
| 220 lb | 1,931 | 2,181 |
| 240 lb | 2,056 | 2,306 |
| 260 lb | 2,181 | 2,431 |
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 66-year-old man eat?
About 1,877 to 2,424 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 66-year-old man eat to lose weight?
Roughly 500 fewer than maintenance for about 1 lb a week, for example 1,651 a day at 175 lb if lightly active.