Body fat calculator
All you need is a tape measure. Measure in the morning for the most consistent trend.
These tools give general estimates, not medical advice. If food, weight or exercise is causing you distress, a doctor or an organization such as NEDIC (Canada) or the National Alliance for Eating Disorders (US) can help.
How this works
This uses the US Navy circumference equations. Men use waist, neck and height; women also add hips. Measure the waist at the navel for men and at the narrowest point for women, the neck below the larynx, and hips at the widest point.
Common questions
How accurate is the tape method?
It is an estimate and can be off by several percentage points. It is most useful for tracking your own trend with the same method over time.
What is a good body fat percentage?
It depends on your age, sex, health and goals. Use the number as a progress marker, not a judgement.