What is the difference between BMR and TDEE?

BMR (basal metabolic rate) is the calories your body burns at complete rest, just to stay alive. TDEE (total daily energy expenditure) is your BMR multiplied by an activity factor, so it also includes movement and exercise. BMR is the resting baseline; TDEE is your full daily calorie burn.

Should I use BMR or TDEE for weight loss?

Use TDEE. Since TDEE reflects all the calories you actually burn in a day, you create a deficit by eating below it. Eating below your BMR is generally too aggressive and hard to sustain. Subtract from your TDEE instead.

How much higher is TDEE than BMR?

It depends on how active you are. TDEE is BMR multiplied by an activity factor from about 1.2 (sedentary) to 1.9 (very active). So a sedentary person's TDEE is around 20% above their BMR, while a very active person's can be nearly double.

How are BMR and TDEE calculated?

BMR is usually estimated with the Mifflin-St Jeor equation, using your age, sex, height and weight. TDEE takes that BMR and multiplies it by an activity factor based on how much you move and exercise. Both are estimates within about plus or minus 10 percent.

Which is more useful, BMR or TDEE?

TDEE is the more practical number for day-to-day nutrition, since it reflects your real calorie needs. BMR is useful for understanding your baseline metabolism and is the foundation that TDEE is built on. You typically calculate BMR first, then TDEE.

Does BMR change over time?

Yes. BMR is influenced by weight, muscle mass, age and sex. It tends to fall as you age or lose weight, and rises with more muscle. It is worth recalculating after significant weight changes to keep your targets accurate.

BMR vs TDEE: What's the Difference?

If you have used a calorie calculator, you have probably seen both BMR and TDEE. They are related but not the same, and knowing the difference helps you set the right calorie target. Here is a clear, simple explanation.

The short answerBMR is the calories you burn at complete rest. TDEE is your BMR plus the calories you burn through activity and exercise. BMR is the baseline; TDEE is your full daily burn, and it's the number you use to manage your weight.

What is BMR?

Your Basal Metabolic Rate is the energy your body uses at complete rest, just to keep you alive: breathing, circulation, cell repair, brain function. It is the largest single chunk of your daily calorie burn, usually 60 to 70 percent.

BMR is calculated from your age, sex, height and weight, most accurately with the Mifflin-St Jeor equation. Work yours out with our BMR calculator.

What is TDEE?

Your Total Daily Energy Expenditure is everything you burn in a day, your BMR plus all your movement: walking, fidgeting, workouts, even digesting food. It is calculated by multiplying your BMR by an activity factor:

Activity level	Factor
Sedentary	1.2
Lightly active	1.375
Moderately active	1.55
Very active	1.725
Extremely active	1.9

Our TDEE calculator does this for you and also gives you a macro split.

How they relate

TDEE = BMR × activity factor. BMR is the resting foundation; TDEE builds on it by adding everything you do. That's why TDEE is always higher than BMR, from about 20% higher if you're sedentary to nearly double if you're very active.

Which should you use?

For everyday nutrition, use TDEE. It reflects the calories you actually burn, so:

Maintain weight: eat around your TDEE
Lose fat: eat below your TDEE (a deficit)
Build muscle: eat slightly above your TDEE

Eating below your BMR is generally too aggressive, hard to sustain and can cost muscle. Create your deficit from TDEE instead. Our calorie deficit calculator can help.

The bottom line

BMR is your resting calorie burn; TDEE is your total daily burn once activity is included. You calculate BMR first, then multiply by activity to get TDEE, and TDEE is the number you use to manage your weight. Start with our BMR calculator or jump straight to the TDEE calculator for the full picture.

This article is for general information and is not medical or nutritional advice. Speak to a qualified professional about your individual needs.

welanutria provides general information and estimates only, and is not medical or dietary advice. Speak with a qualified professional before making significant changes to your diet, exercise or health routine.