Free health tools & calculators
Quick, no sign-up, no data captured. Each tool gives you a starting answer plus a clear note on when to talk to the pharmacist. Built from official guidance — BNF / BNFc, NHS, NICE.
BMI calculator
Body Mass Index — a starting screen for weight-management eligibility. Live calculation as you type, in cm/kg or ft/stone. Tells you whether GLP-1 medicines (Mounjaro, Wegovy) may be considered for you.
Calculate your BMI → Baby & childChildren's paracetamol dose
Weight-based or age-based dosing of Calpol suspension. BNFc reference. Shows ml per dose plus daily maximum. Hard safety gates for under-2-month-olds.
Check the dose → Women's healthPregnancy due date
Estimated due date from the first day of your last menstrual period, plus current gestational age in weeks and trimester. Links to folic acid + safe-medicines guidance.
Calculate due date → NHS prescriptionsNHS prescription cost
Pay-as-you-go vs Prepayment Certificate (PPC). Tells you which is cheapest given your prescription volume, and what the annual saving looks like with 2026 rates.
Work out your saving → Stop smokingQuit-smoking savings
What you'd save by quitting, broken down by day, week, month, year and over 5/10 years. Doesn't count the bigger savings — lung function, life expectancy. Free NHS Stop Smoking service link.
Show me the numbers → Baby & childChildren's ibuprofen dose
BNFc-based weight + age dosing for Nurofen for Children. Hard safety gate for under-3-month-olds or under 5 kg. Tells you when to use paracetamol instead.
Check the dose → LifestyleAlcohol units
UK 14-unit weekly guidance, calculated from any drink size and ABV. Pick a typical drink, see your week. Confidential support routes if cutting down is hard.
Check your units →None of these tools collect or transmit your data. Inputs and results stay in your browser; nothing is sent to us or any third party. The calculators are reference tools, not diagnostic tools — if something doesn't feel right, talk to the pharmacist on 0113 244 1551 or request a callback.