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BMI

3 calculators

Health & Fitness Calculators

Use these health and fitness calculators to estimate BMI, resting metabolic rate, total daily energy expenditure, calorie targets, macro splits, and projected weight change. The tools are useful for general planning, but they do not replace medical or dietetic advice.

Tools in this category

BMI Calculator Check your body mass index from height and weight. BMR Calculator Estimate resting calories and activity-adjusted TDEE from common formulas. Calorie Calculator Find calorie targets, macros, and projected weight change for your goal.

What this category covers

Use these health and fitness calculators to estimate BMI, resting metabolic rate, total daily energy expenditure, calorie targets, macro splits, and projected weight change. The tools are useful for general planning, but they do not replace medical or dietetic advice.

Each calculator has its own page with a focused form, formula notes, worked examples, and related tools. Start with the closest calculator below, then follow the related links when the problem needs another step.

Health & Fitness — common questions

Are BMI, BMR, and calorie results medical advice?

No. These calculators provide general estimates from common formulas. Health decisions should be discussed with a doctor, registered dietitian, or qualified health professional.

Why can calorie estimates differ between people?

Calorie needs depend on age, sex, height, weight, body composition, activity, medical conditions, and tracking accuracy. Treat the result as a starting point, then adjust based on real progress.