HEALTH TOOLS
Free UK Health Tools and Clinical Calculators
Evidence-based calculators and self-assessment tools built for the UK. Every tool follows NHS, NICE, or WHO guidelines. Results appear in seconds, and no data is stored.
What Free Health Tools Does RxSure Offer?
BMI Calculator
Calculate your Body Mass Index using the WHO classification. Supports metric and imperial units.
Use this toolBlood Pressure Checker
Check your reading against ESC/ESH 2018 hypertension classification used by NHS clinicians.
Use this toolCalorie Calculator
Calculate your daily calorie needs using the Mifflin-St Jeor equation endorsed by the British Dietetic Association.
Use this toolHay Fever Severity Score
Five-question ARIA-based assessment. Find out if your symptoms are mild, moderate, or severe.
Use this toolClinical Disclaimer
These tools provide general health information only and do not replace professional medical advice. Always consult a qualified healthcare professional for diagnosis and treatment. All health tools clinically reviewed by Tahir Hameed, Pharmacist Independent Prescriber (GPhC: 2210908). Last reviewed: April 2026.
Have Questions About RxSure Health Tools?
Are RxSure health tools free to use?
Yes. All health tools on RxSure are completely free, require no registration, and store no personal data. Calculations run entirely in your browser.
How accurate are the health calculators?
Each calculator uses clinically validated formulas referenced by NHS England, NICE, or WHO guidelines. All tools are reviewed annually by a qualified pharmacist independent prescriber.
Can I use these tools on my pharmacy website?
RxSure health tools are available on this website. You can link to them from your pharmacy website. Visit our For Pharmacies page to learn about partnership options.
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Twenty minutes on a call will tell you whether RxSure fits your pharmacy.