// FREE TOOL · FROM VIVE
Your metabolism, measured.
Find your basal metabolic rate, the calories your body burns at complete rest, using the Mifflin–St Jeor equation.
Enables the Katch–McArdle formula, more accurate for lean individuals.
BMR · MIFFLIN-ST JEOR
1,668 kcal
per day
HARRIS-BENEDICT (REVISED)
1,739 kcal
Usually 5–10% higher
AT REST, PER HOUR
69 kcal/hr
Daily calories by activity
Sedentary
Little or no exercise
2,001 kcal
Lightly active
1–3 days / week
2,293 kcal
Moderately active
3–5 days / week
2,585 kcal
Very active
6–7 days / week
2,876 kcal
Extra active
Hard exercise + physical job
3,168 kcal
// FAQ
Good to know
What is BMR, exactly?+
Your basal metabolic rate is the energy your body needs just to stay alive at rest (breathing, circulation, cell repair) before any movement or digestion is added.
Why do the two formulas disagree?+
Mifflin–St Jeor (1990) is the most validated against modern populations and is generally more accurate. Harris-Benedict (revised 1990) tends to run 5–10% higher, we show both so you can compare.
How do I use my BMR?+
Multiply it by an activity multiplier to get your TDEE, your true daily maintenance calories, using the table above or our TDEE calculator.
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