Question
What this page helps answer
A simple adult BMI calculator for forms, reports, and personal records, with NHS-style categories plus context about why BMI is an incomplete measure of health or fitness.
Use it when you need a practical body-measurement, race-pace, or training-planning estimate before checking specialist guidance.
- Open the live tool when you want the calculation or utility output.
- Review the notes and assumptions before relying on the answer.
- Use related links when this question leads to another calculation.
Inputs
Information to have ready
For this page, the most useful inputs to check are height unit, height, height feet, height inches, weight unit, weight, weight stone, and extra pounds.
Check measurement units, age, body-measurement context, race distance, pacing unit, event type, transition time, and whether health or safety advice applies.
- Check height unit before using the result.
- Check height before using the result.
- Check height feet before using the result.
- Check height inches before using the result.
- Check weight unit before using the result.
- Check weight before using the result.
Result
How to interpret the answer
Use the result as a planning estimate, not medical, diagnostic, fitness, nutrition, or coaching advice. Check NHS guidance or a qualified professional where health or safety matters.
The live tool is designed for quick comparison: change one assumption, rerun the estimate, and compare the movement before making a decision.
- Look for the headline result first.
- Use charts and detailed rows to understand what drives the answer.
- Save, share, or export the result where the linked tool supports it.