Sedentary
1,392kcal
140 lb, 5 ft 4 in
Lightly active
1,595kcal
Moderately active
1,798kcal
Very active
2,001kcal
Show the math
BMR = 10 × 63.5 kg + 6.25 × 162.6 cm − 5 × 66 − 161 = 1,160
Calories per day by weight and activity
A 66-year-old woman, 5 ft 4 in tall.
| Weight | Sedentary | Light | Moderate | Very active |
|---|---|---|---|---|
| 120 lb | 1,283 | 1,470 | 1,657 | 1,845 |
| 140 lb | 1,392 | 1,595 | 1,798 | 2,001 |
| 160 lb | 1,501 | 1,720 | 1,939 | 2,158 |
| 180 lb | 1,610 | 1,845 | 2,079 | 2,314 |
| 200 lb | 1,719 | 1,969 | 2,220 | 2,471 |
| 220 lb | 1,827 | 2,094 | 2,360 | 2,627 |
| 240 lb | 1,936 | 2,219 | 2,501 | 2,783 |
| 260 lb | 2,045 | 2,343 | 2,642 | 2,940 |
Calories to lose weight at 66
| Weight | Lose 1 lb/week | Lose 0.5 lb/week |
|---|---|---|
| 120 lb | 1,200 | 1,220 |
| 140 lb | 1,200 | 1,345 |
| 160 lb | 1,220 | 1,470 |
| 180 lb | 1,345 | 1,595 |
| 200 lb | 1,469 | 1,719 |
| 220 lb | 1,594 | 1,844 |
| 240 lb | 1,719 | 1,969 |
| 260 lb | 1,843 | 2,093 |
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 66-year-old woman eat?
About 1,392 to 1,798 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 66-year-old woman eat to lose weight?
Roughly 500 fewer than maintenance for about 1 lb a week, for example 1,200 a day at 140 lb if lightly active.