What BMR means
BMR estimates the energy your body uses for basic functions at rest. It is not the same as total daily calorie needs. Most adults burn more than BMR because walking, working, training, digestion, and other daily movement add to total expenditure.
How this calculator works
The calculator uses the Mifflin-St Jeor equation with weight, height, age, and sex. It also shows simple sedentary and moderate TDEE examples so you can see how activity changes the number.
How to use BMR correctly
Use BMR as a base layer. Do not set calorie goals far below BMR without professional guidance. For weight planning, TDEE is usually more useful because it includes activity. If your weight is not changing as expected, your actual daily expenditure may differ from the estimate.
Quick interpretation table
| BMR | Resting energy estimate. |
| Sedentary TDEE | BMR multiplied by a low activity factor. |
| Moderate TDEE | BMR multiplied by a moderate activity factor. |
| Real-world adjustment | Small changes based on actual body-weight trends. |
Example result
If the calculator estimates a BMR of 1,650 calories, the same person might maintain closer to 1,980 calories if sedentary or around 2,550 calories with moderate activity. That gap is why BMR alone should not be treated as maintenance calories.