Livefit Body Calculator
Understand Your Body
Know your numbers. Understand your progress. This calculator provides estimates for BMI, Basal Metabolic Rate and daily calorie needs based on the information entered.
Your metrics
Enter Your Details
Use the adult calculator ranges below for a general estimate. All calculations happen locally in your browser.
Your results
Your Numbers
These are estimates based on the details and activity level you entered.
BMI screening rangeGeneral adult categories
The basics
What Do These Numbers Mean?
A simple way to understand what each estimate is trying to tell you.
BMI
A weight-to-height screening measure. It can be useful as a general starting point, but it does not directly measure body fat or overall health.
BMR
An estimate of the energy your body uses at rest. It is calculated here using the Mifflin–St Jeor equation.
Daily Calorie Estimate
An estimate based on BMR and your selected activity level. It should not be treated as an exact calorie prescription.
Important: These calculations are estimates for general informational purposes and are not medical advice or a diagnosis. Individual needs can vary. For personalized health or nutrition guidance, consult a qualified healthcare professional.
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