Health

BMI · BMR Calculator · Calorie Calculator

BMI Calculator

Calculate your Body Mass Index (BMI) instantly. Get your WHO classification, healthy weight range, and personalized recommendations.

BMR Calculator (Basal Metabolic Rate)

Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE). Get personalized calorie targets for weight loss, maintenance, and weight gain.

Body Fat Calculator

Estimate your body fat percentage from neck, waist (and hip for women) using the US Navy circumference method. Get fat mass, lean body mass, and ACE/ACSM healthy ranges.

Calorie Calculator (TDEE & Macros)

Calculate your daily calorie needs and macronutrient targets. Get personalized protein, carbs, and fat goals for weight loss, maintenance, or muscle gain based on your TDEE.

Sleep Calculator

Find the best time to go to bed or wake up based on sleep cycles. Calculate optimal sleep times for 3 to 6 complete 90-minute cycles.

Social Jet Lag Calculator

Measure your social jet lag in hours, find your chronotype, and get a personalized bedtime fix. Based on the Munich ChronoType Questionnaire (MCTQ).

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Health

Every calculator in this category, free and with no sign-up:

BMI · BMR Calculator (Basal Metabolic Rate) · Calorie Calculator (TDEE & Macros) · Body Fat · Sleep · Social Jet Lag

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Frequently Asked Questions

Are these calculators free?

Yes. Every calculator on this page runs in your browser, is free to use and needs no account.