Basal metabolic rate (BMR) calculator
Mifflin-St Jeor (1990): BMR = 10·kg + 6.25·cm − 5·yr + s (s = +5 male / −161 female).
- Mifflin-St Jeor
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- Harris-Benedict (revised)
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- Avg of both
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BMR is calories burned at complete rest. Multiply by activity factor (1.2–1.9) to get TDEE.
About this tool
Basal metabolic rate (BMR) calculator is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.
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