Health calculator

TDEE Calculator

Estimate total daily energy expenditure and maintenance calories from age, sex, height, weight, and activity level.

FormulaBMR = 10w + 6.25h - 5a + s; TDEE = BMR x activity factor

Formula

TDEE formula

TDEE and maintenance calorie estimates are planning tools. Actual needs can vary with tracking accuracy, body composition, health status, and activity.

BMR = 10w + 6.25h - 5a + s; TDEE = BMR x activity factor

A BMR of 1,700 kcal/day with a 1.55 activity factor gives TDEE = 1,700 x 1.55 = 2,635 kcal/day.

SourcesThis calculator includes source notes, assumptions, and exclusions so the result is easier to verify before use.

Sources and assumptions

Source notes

This calculator includes source notes, assumptions, and exclusions so the result is easier to verify before use.

Effective year
Current rules
Last verified
2026-06-18

TDEE and maintenance calorie estimates are planning tools. Actual needs can vary with tracking accuracy, body composition, health status, and activity.

Official and reference sources

Assumptions

  • The Mifflin-St Jeor equation estimates adult resting energy expenditure from age, sex, height, and weight.
  • TDEE multiplies the resting estimate by the selected activity factor.
  • The result is a starting estimate for maintenance calories, not measured energy expenditure.

Not included

  • Pregnancy, lactation, growth, illness, medication effects, metabolic adaptation, body-composition adjustments, and measured indirect calorimetry.
FAQ6 common questions for this calculator.

FAQs

Is TDEE the same as maintenance calories?+

TDEE is an estimate of total daily energy expenditure. Many people use it as a starting maintenance calorie target.

Which activity factor should I choose?+

Choose the factor that best matches your usual week. If uncertain, start conservatively and compare your weight trend over several weeks.

Can I use TDEE for weight loss?+

Yes. Estimate TDEE first, then use a calorie deficit calculator to compare intake below that maintenance estimate.

How does the TDEE Calculator calculate the result?+

It uses the TDEE formula: BMR = 10w + 6.25h - 5a + s; TDEE = BMR x activity factor. A BMR of 1,700 kcal/day with a 1.55 activity factor gives TDEE = 1,700 x 1.55 = 2,635 kcal/day.

What information do I need to use the TDEE Calculator?+

Estimate total daily energy expenditure and maintenance calories from age, sex, height, weight, and activity level.

How accurate is the TDEE Calculator?+

TDEE Calculator applies the formula and assumptions shown on this page. Results may be rounded for readability, so verify changing rates, thresholds, medical guidance, or legal rules with the cited source or a qualified professional.

RelatedNearby tools that usually answer the next question.

Explore more calculators

BMI CalculatorHealthCalorie CalculatorHealthMaintenance Calorie CalculatorHealthBMR CalculatorHealthIdeal Weight CalculatorHealthWater Intake CalculatorHealthMacro CalculatorHealthPregnancy Due Date CalculatorHealthBody Fat Percentage CalculatorHealth

Health guide

How to use the TDEE Calculator

Estimate total daily energy expenditure and maintenance calories from age, sex, height, weight, and activity level. The page also explains the TDEE formula and shows a practical example: A BMR of 1,700 kcal/day with a 1.55 activity factor gives TDEE = 1,700 x 1.55 = 2,635 kcal/day.

  1. 1

    Enter your details

    Enter age, sex, height, weight, and activity level, then complete any other fields shown in the calculator.

  2. 2

    Check the calculation

    Review the result alongside the TDEE formula: BMR = 10w + 6.25h - 5a + s; TDEE = BMR x activity factor.

  3. 3

    Compare scenarios

    Change one or more inputs to see how they affect the TDEE Calculator result before you use the estimate.

Was this calculator useful?

0/1200