Health Calculators

Body composition, calorie and weight-range tools using published formulas. Every tool below is free, needs no signup, and computes entirely in your browser. Figures that depend on tax law or interest rates show their source and last-reviewed date on the tool page.

What each calculator does

Every row below links to the tool page and states what it actually computes, so you can pick the right one without opening each page first.

Health Calculators
BMI CalculatorFree BMI calculator using the standard body mass index formula. Works in metric and imperial units with the full BMI category char
Body Fat CalculatorFree body fat calculator using the US Navy method. Enter your waist, neck, hip and height measurements for an estimated body fat p
Calorie CalculatorFree calorie calculator. Estimate your BMR and total daily energy expenditure using the Mifflin-St Jeor equation, plus goals to lo
Ideal Weight CalculatorFree ideal weight calculator. Compare four medical ideal weight formulas for your height and sex, and see the healthy range alongs

Frequently asked questions

What is included in the health calculators?

This page lists every free calculator in the Health & Body group on GetClac: BMI Calculator, Body Fat Calculator, Calorie Calculator, Ideal Weight Calculator. Each one runs entirely in your browser with no signup.

Are these health calculators accurate?

Each calculator uses the standard published formula for its task, and figures that depend on tax law or interest rates show their source and last-reviewed date on the tool page. Results are estimates for planning, not filed returns or financial advice.

Do I need an account to use these calculators?

No. GetClac calculators are static pages that compute entirely on your device. Nothing you type is sent to a server and no account is required.