Are these a substitute for medical advice?

No. They give general estimates using standard formulas and are for information only — always consult a professional for medical decisions.

Free Health Calculators

Simple, honest health calculators — BMI, calorie needs, sleep cycles and other everyday measures. Each one shows the formula it uses, so you understand what the number means rather than just trusting it.

These are informational tools, not medical advice, and they say so. The goal is a clear, ad-free way to get a quick estimate and see exactly how it was worked out.

3 free tools·No signup·Free forever

LiveHealth

Blood Donation Check

Find out instantly whether you can donate blood in Sri Lanka. Free NBTS-aligned eligibility checker covering age, weight, hemoglobin, inter-donation interval, tattoos, vaccines and travel.

Open tool

LiveHealth

Child Growth Chart

Calculate WHO Z-scores and percentiles for weight-for-age, height-for-age, weight-for-height, and BMI-for-age. Matches the CHDR card your PHM uses. Free, private, no signup.

Open tool

LiveHealth

Vaccination Schedule

Generate your child's personalised Sri Lanka EPI vaccination schedule from date of birth — BCG to aTd, with exact due dates, overdue alerts, and a printable summary. Free, no signup, sources cited.

Open tool

Frequently asked questions

Are these a substitute for medical advice?: No. They give general estimates using standard formulas and are for information only — always consult a professional for medical decisions.

Browse other categories

Finance Calculators AI Tools Document Tools Image Tools Text Tools Developer Tools Time & Date Tools Generators Education Tools Freelance Tools Travel Tools Utility Tools

See all tools