How to Calculate BMI: Formula, Chart, Examples
Use the BMI calculator formula, weight (kg) ÷ height (m)², with a 72 kg and 170 cm example, adult BMI chart and what the number cannot tell you.
The Calcylator Blog
Practical guides, clear examples, and smarter ways to calculate.
13 articles
Use the BMI calculator formula, weight (kg) ÷ height (m)², with a 72 kg and 170 cm example, adult BMI chart and what the number cannot tell you.
Calculate BMR with the Mifflin-St Jeor equation for men and women, see two worked examples and learn why BMR is not your daily calorie target.
Body fat percentage: use the fat mass ÷ body weight formula, try a BMI-based estimate, and read common ranges with their limits.
Use the calorie deficit calculator formula TDEE − intake, see a 300 kcal worked example and learn how to size and check a deficit sensibly.
Find your daily calorie needs by multiplying BMR by an activity factor. See a 2,310 kcal example, goal-based targets and a way to check it in real life.
Find your ideal body weight with the Devine formula and the BMI range method. See a worked example and a chart for heights from 150 to 185 cm.
Explore our free calculators and apply these concepts to your own numbers.