Daily Calorie

Estimate resting energy expenditure (BMR) and an activity-adjusted daily calorie estimate (TDEE) from body measurements, age, sex at birth, and activity level.

Enter your values in the calculator fields to get an instant result.

Calculator guide

Estimate resting energy expenditure (BMR) and an activity-adjusted daily calorie estimate (TDEE) from body measurements, age, sex at birth, and activity level.

Formula or method

Convert pounds to kilograms (× 0.45359237) and inches to centimeters (× 2.54). Mifflin–St Jeor BMR (kcal/day) = 10 × kg + 6.25 × cm − 5 × age + 5 for male, or − 161 for female. Daily calories (TDEE) = BMR × selected activity factor (1.2, 1.375, 1.55, or 1.725).

How to use this calculator

  1. Enter weight in pounds, height in inches, and age in years.
  2. Select the sex-at-birth option used in the formula and an activity level.
  3. Read the BMR and Daily calories (TDEE) estimates in kcal/day; compare activity settings only if they reflect your routine.

Worked example

For a 30-year-old male at 160 lb and 68 in, the converted inputs are about 72.57 kg and 172.72 cm. BMR is about 1,660 kcal/day; with Sedentary (1.2), estimated TDEE is about 1,992 kcal/day.

Understanding the result

BMR estimates energy used at rest; TDEE multiplies it by the selected activity factor to estimate daily maintenance needs. Neither number is a personalized eating target or a diagnosis.

Limitations and assumptions

  • The model cannot account for individual body composition, medication, illness, pregnancy, or changes in metabolism and activity.
  • Only male and female formula options and four activity multipliers are available; the calculation may not fit every person.
  • Invalid or unrealistic measurements are not clinically screened by the tool; seek professional advice before using the result for a diet plan.

Frequently asked questions

Is TDEE the same as BMR?

No. TDEE adjusts the resting estimate by the activity factor selected in the form.

Does this set a weight-loss calorie goal?

No. It estimates maintenance expenditure, not a safe deficit or treatment plan.

Which activity level should I choose?

Choose the closest description of your usual activity; the result changes substantially with this assumption.

Sources

Educational estimate only; not medical or nutrition advice.