TDEE Calculator
Profile
Measurements
Activity
Choose the description that best reflects your usual weekly activity. This factor is an estimate.
Estimated daily energy
This is a Mifflin-St Jeor estimate, not medical advice or a calorie prescription.
The plus and minus values are fixed comparisons, not personalized targets.
This browser-local calculator estimates basal metabolic rate (BMR) with the Mifflin-St Jeor equation, then multiplies it by a selected activity factor to estimate total daily energy expenditure (TDEE). An estimate cannot measure your exact energy use or replace individual medical or nutrition advice.
How this estimate works
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1
Choose units and a sex category
The calculator uses the male or female formula convention in Mifflin-St Jeor.
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2
Enter age, weight and height
Metric and Imperial measurements are converted for the equation in your browser.
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3
Choose an activity factor
Pick one of the five fixed factors from 1.2 to 1.9.
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4
Read the estimate
See estimated BMR, estimated maintenance TDEE, and fixed arithmetic comparisons.
Formula and activity factors
The calculator uses Mifflin-St Jeor with weight in kilograms, height in centimetres and age in years:
- Male formula convention:
10 × weight + 6.25 × height - 5 × age + 5 - Female formula convention:
10 × weight + 6.25 × height - 5 × age - 161
It then multiplies that BMR estimate by the selected factor:
| Activity choice | Factor |
|---|---|
| Sedentary | 1.2 |
| Light | 1.375 |
| Moderate | 1.55 |
| Very active | 1.725 |
| Extra active | 1.9 |
Reading the result
TDEE is an estimate of daily energy expenditure, not a measurement of exact maintenance. The four values at 250 and 500 kcal above or below TDEE are fixed comparisons to the estimate. They are not diet prescriptions and do not predict weight change.
Your inputs, calculations and clipboard action stay in the current browser session. The funnel URL carries only its step and permitted attribution parameters, not health inputs or results.
Frequently Asked Questions
BMR is the equation output before the activity factor is applied. It is an estimate, not a clinical measurement.
Here, TDEE is the BMR estimate multiplied by the activity factor you selected. It is a planning estimate rather than an exact maintenance value.
Predictive equations and broad activity categories cannot capture every difference in daily movement or physiology.
No. This tool does not diagnose, prescribe a diet, or set an individual target. Speak with a qualified clinician or dietitian for personalised guidance.
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