Fitness
GuideBest TDEE Formula
Learn how TDEE is calculated, which formulas are most practical, and how to adjust calorie estimates in the real world.
June 6, 2026
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Fitness
Performance and body metrics
BMR Calculator
BMR Calculator estimates the calories your body needs just to support essential functions like breathing, circulation, and temperature regulation.
Updated 2026-06-06 3 article sections Calculator, explanation, and FAQ
What you get
A result, a short explanation, and links to related tools.
Best for
Body measurements, calories, and training goals
Tip
Use the calculator first, then read below if you want more context.
Calculator
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Enter your details to get an estimate, then read the notes below for context.
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Enter your details
Most people finish this in under a minute.
Result
Quick interpretationWaiting for input
Enter your details and click calculate.
This panel shows the main result first, followed by any extra details that matter.
Primary signal
Your main number or category will appear here after calculation.
What to look at next
Check the range, category, or comparison details instead of relying on one number alone.
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EstimateFocused view
Some calculators also show a visual summary here after calculation.
Step 1
Start with the main number, then check the range or category around it.
Step 2
Use the sections below if you want formulas, ranges, or related tools.
Notes to keep in mind
Guide
What is BMR?
Performance and body metrics
Basal Metabolic Rate is the minimum energy your body needs to stay alive while fully at rest. It covers core functions such as breathing, heartbeat, and cell repair.
BMR is not the same as maintenance calories because daily movement, exercise, digestion, and lifestyle all add more energy demand.
Guide
BMR Formula
Performance and body metrics
This calculator uses the Mifflin-St Jeor equation, which is widely used for practical calorie planning.
The formula includes sex, age, height, and weight to estimate resting calorie needs.
Guide
How to Use Your BMR
Performance and body metrics
Use BMR as the starting point for estimating TDEE, cutting calories responsibly, or setting a minimum nutrition floor during a weight-loss phase.
Most people should not eat below BMR for long periods without medical supervision.
Common questions
Answers to common follow-up questions about bmr calculator.
What is the difference between BMR and TDEE?
BMR is what your body burns at rest. TDEE adds activity, exercise, and daily movement on top of BMR.
Does BMR change over time?
Yes. BMR can shift with age, body weight, muscle mass, hormones, and long-term activity habits.