Adult BMI
Calculate adult body mass index from height and weight. Enter centimetres and kilograms rather than metres or pounds.
Health and exercise calculators
Body measurements, pace and activity energy describe different things. Choose the measure you want to understand.
Which tool fits this question?
Adult BMI uses height, weight and an eligible age for a body-size reference. Running tools convert pace and time. Activity energy also needs body weight and a sourced MET value, distinguishing total energy from extra energy above resting.
- Which adult BMI reference range applies?
- What finish time corresponds to my target pace?
- What energy estimate follows from weight, activity minutes and MET?
Results cannot replace diagnosis or an exercise prescription and do not guarantee weight loss. Check suitability separately for children, pregnancy and specific medical conditions.
Health and exercise · 7 tools
☆ Add to favorites for quick access next time
Running pace and finish time
Estimate duration from pace or calculate average pace from duration. Choose the direction first so only the relevant time input is used.
Steps and walking distance
Convert step counts and walking distance, or measure your own average step length. Each foot landing counts as one step, rather than a two-step stride.
Adult resting energy estimate
Estimate resting energy expenditure using the Mifflin-St Jeor equation. Select the coefficient group used by the original research rather than interpreting it as a health judgement.
Waist-to-hip and waist-to-height ratios
Calculate two ratios from body measurements in the same unit. Measure carefully rather than treating a ratio as a diagnosis.
Estimated exercise heart-rate range
Estimate a heart-rate interval from age and measured resting heart rate. Intensity here is a percentage of heart-rate reserve, not maximum heart rate.
Activity energy estimate
Estimate activity energy using a MET value matched to the activity source. MET describes an activity's metabolic intensity, not its speed.