BMR Calculator
Estimate bmr from the age, body, activity, or schedule inputs. Use this free bmr calculator for fast, clear results with no signup required.
BMR Calculator guide
What it is for
The BMR Calculator provides a planning estimate from the information entered.
How it is calculated
Mifflin–St Jeor BMR = 10 × weight in kg + 6.25 × height in cm − 5 × age + sex constant. Convert pounds by 0.45359237 and inches by 2.54 first.
Assumptions
It assumes the inputs use the requested units and represent a general reference population, not an individual assessment.
Example
A 30-year-old female at 150 lb and 65 in has modeled resting needs of about 1,401 kcal/day, before any activity multiplier.
Limitations
This is an educational estimate, not a diagnosis, treatment, or dosing instruction. Consult a licensed healthcare professional, particularly during pregnancy, with symptoms, or before changing health behavior.
Public source: CDC: About Healthy Weight