BMR Calculator for Adults 55+
The calories your body uses at rest, using the Mifflin–St Jeor equation.
Fill in the fields above to see your result.
For general guidance only — not medical advice. Please check with your doctor before starting any new exercise or diet.
About the BMR Calculator
Basal metabolic rate (BMR) is roughly the energy your body uses just to keep going at rest — breathing, circulation, staying warm.
It naturally eases down with age, which is normal. Gentle daily movement and keeping muscle help support it.
Frequently asked questions
What’s the difference between BMR and calories burned?
BMR is at-rest energy. Your total daily calories add movement on top — use the calorie needs calculator for that.
Why does BMR fall with age?
Mainly because muscle mass tends to decline. Gentle strength work helps slow that.
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