Terms of Use

Last updated: 25 May 2026

By using ukbmicalculator.com ("the site"), you agree to these terms. If you don't agree, please don't use the site.

These terms are written in plain English. They are not designed to trick you into giving up rights you have under UK law.

What this site is

Well Balanced Calc provides free UK health calculators and educational content. The site is operated from the United Kingdom for a UK audience.

The calculators include:

All calculators use standard, publicly available formulas (such as the Mifflin-St Jeor equation for BMR and NHS BMI thresholds for adult weight categories).

What this site is NOT

The site is not:

Nothing on the site constitutes medical, nutritional, or fitness advice. The calculators are for general educational and planning purposes only. Before making any decisions that may affect your health, you should speak to your GP or another qualified healthcare professional.

Accuracy of information

We aim to keep the information on the site current and accurate. However:

You are responsible for understanding that these are general estimates and for verifying anything important with a qualified healthcare professional.

Important context for using these calculators

BMI and related metrics are screening tools, not diagnoses. They can be misleading for certain groups, including but not limited to:

If you're unsure how to interpret a result, please speak to your GP.

No liability for decisions made

To the maximum extent permitted by UK law, Well Balanced Calc accepts no liability for any loss, damage, or consequence arising from:

This does not limit liability for fraud, death or personal injury caused by negligence, or any other liability that cannot be excluded under UK law.

If you're worried about your weight, your eating, or your relationship with food: please don't rely on a calculator. Speak to your GP, or contact Beat — the UK eating disorder charity — on 0808 801 0677 or visit beateatingdisorders.org.uk. Their helpline is free and confidential.

Intellectual property

The content on the site (text, calculator logic, design, images) is the property of Well Balanced Calc unless otherwise stated. You may:

You may not:

Third-party links and advertisements

The site links to external resources (NHS, Beat, other health and government sources) for your convenience. We don't control these sites and aren't responsible for their content or practices.

The site displays advertisements via Google AdSense. We don't control which ads appear; they are served by Google based on its own algorithms. The presence of an advertisement on the site does not constitute endorsement of the advertiser.

Use by children

The site is intended for adults aged 18 and over. NHS BMI thresholds for adults do not apply to children or teenagers — different thresholds and growth charts are used in those age groups. If you want to check BMI for a child or teenager, please use the NHS BMI calculator for children and teenagers instead.

Changes to the site

We may change, update, or remove parts of the site at any time. We may also update these terms. Significant changes will be reflected in the "Last updated" date at the top of this page.

Governing law

These terms are governed by the laws of England and Wales. Any disputes arising from your use of the site fall under the jurisdiction of the courts of England and Wales.

Contact

For questions about these terms, contact us at wellbalancedcalc@outlook.com.

Final reminder: The calculators on this site are educational estimates, not medical advice. If anything about your health, weight, or nutrition concerns you, speak to your GP.