Terms

Terms of use

Last updated: 25 September 2026.

Fitness Check gives general fitness and wellness estimates for adults aged 18 and over. The estimates are not medical advice, diagnosis or treatment, and they do not replace a doctor, dietician, physiotherapist or professional coach. Speak to a doctor before starting strenuous exercise or changing your diet or fluid intake, especially if you have a health condition, take regular medication or are pregnant.

The estimates use simple standard formulas and are approximate. You are responsible for how you use them.

You may use the tools online. Copying, resale, scraping, redistribution and reverse engineering of the site or its calculator logic are not permitted.

Adverts on this site are paid placements. They are not endorsements or recommendations by Fitness Check.