TDEE vs BMR: What's the Difference?
4 min read · Updated 2026
BMR and TDEE are two of the most important numbers in nutrition, and they're constantly mixed up. Mixing them up leads to calorie targets that are way too low or too high. Here's the difference and how to use each one.
BMR: what you'd burn in a coma
Basal Metabolic Rate is the energy your body uses just to stay alive — breathing, pumping blood, keeping your temperature stable, maintaining cells. It's the calories you'd burn lying in bed doing nothing all day. For most adults it's 1,400–1,800 calories.
TDEE: BMR plus everything else
Total Daily Energy Expenditure is BMR plus the calories you burn through activity — workouts, walking, digestion, and fidgeting. TDEE is the number you actually compare your intake against. Eating below TDEE creates a deficit; eating above it creates a surplus.
Activity multipliers turn BMR into TDEE: sedentary roughly 1.2× BMR, lightly active 1.375×, moderately active 1.55×, very active 1.725×.
Which one should you use?
Always use TDEE, not BMR, to set your calorie target. A common mistake is eating at BMR thinking it's a deficit — it's actually close to maintenance for a sedentary person and far too low for an active one. Use a TDEE calculator to estimate, then adjust based on real weight trends.
Frequently asked questions
Is BMR the same as maintenance calories?
No. BMR is only the calories to stay alive at rest. Maintenance is your TDEE — BMR plus activity. Eating at BMR is usually a large deficit.
How do I calculate my TDEE?
Use the Mifflin-St Jeor equation to estimate BMR, then multiply by an activity factor based on your daily movement and training. Our free TDEE calculator does this for you.
RecompOne turns your weight, waist, training, and adherence trends into one adaptive next move — so the tips you read here become a plan you can actually follow. Open RecompOne.
Related tips
Body Recomposition vs Bulking vs Cutting
Three approaches to changing your body composition, who each is for, and how to choose based on your starting point.
How to Break a Weight Loss Plateau
A diagnostic checklist for when the scale stops moving — from hidden calories to adaptation — and what to adjust first.
Does Drinking Water Help With Fat Loss?
Water doesn't burn fat directly, but it supports every process that does. Here's what water actually does for fat loss.