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Disclaimer

Last updated: 1 January 2025

Important: BMI Calculator NHS is not affiliated with NHS England, NHS Scotland, NHS Wales, or any NHS Trust. The "NHS" in our name refers to the NHS BMI guidelines we follow, not to any official NHS organisation.

Medical Disclaimer

The information and tools provided on BMI Calculator NHS (bmicalculatornhs.co.uk) are for general informational and educational purposes only. Nothing on this website constitutes medical advice, diagnosis, or treatment.

Always consult a qualified healthcare professional — such as your GP, practice nurse, or registered dietitian — before making any health decisions based on BMI results or any other information provided on this website.

BMI Limitations

Body Mass Index (BMI) is a screening tool that has known limitations:

  • Not a diagnostic tool: BMI does not diagnose body fatness, health conditions, or disease risk
  • Muscle mass: Athletes and muscular individuals may have a high BMI without excess body fat
  • Age: Older adults may have more body fat at a lower BMI than younger adults
  • Ethnicity: Some ethnic groups (including South Asian, Black, and Chinese populations) may have increased health risks at lower BMI values
  • Children: Standard adult BMI calculations are not appropriate for children. Use our child-specific growth chart tools instead
  • Pregnancy: BMI calculations are not accurate for pregnant women
  • Height accuracy: BMI results depend on accurate height and weight measurements

Not an Official NHS Service

This website is not an official NHS service. We provide BMI calculators and health tools based on publicly available NHS BMI classification guidelines. For official NHS health information, visit www.nhs.uk.

Emergency Services

If you have a medical emergency, call 999 immediately. For urgent medical advice that is not an emergency, call 111 (NHS 111).

Accuracy

While we strive to keep information accurate and aligned with current NHS guidelines, we cannot guarantee the completeness or timeliness of all content. Health guidelines are subject to change. We recommend verifying important health information with your healthcare provider.

No Liability

BMI Calculator NHS accepts no liability for any decisions made based on the results provided by our tools, or for any loss, damage, or harm arising from reliance on information on this website.

Affiliate Disclaimer

Some pages on this website may contain affiliate links or sponsored content. These will always be clearly disclosed. We only recommend products and services we believe are genuinely useful.

Contact

If you have questions about this disclaimer, contact us at: info@bmicalculatornhs.co.uk