Fitness Calculators

Estimate body measurements, daily energy needs, activity calories, and running pace.
These tools provide general estimates; review each calculator’s inputs and limitations.

BMI Calculator

Calculate body mass index from height and weight.

Calorie Calculator

Estimate daily calorie needs and targets.

Lean Body Mass Calculator

Estimate body weight excluding fat mass.

Calories Burned Calculator

Estimate energy used during an activity.

Body Fat Calculator

Estimate body fat percentage from measurements.

Pace Calculator

Calculate running pace, distance, or time.

Ideal Weight Calculator

Explore reference weight estimates by height.

BMR Calculator

Estimate energy your body uses at rest.

About CalcGenius

Practical tools to help you calculate, plan, and get things done.