Prime1mg Free Health Calculators
BMI, TDEE, Blood Pressure & Diabetes Risk — all free
2 followers
BMI, TDEE, Blood Pressure & Diabetes Risk — all free
2 followers
4 free health calculators — no sign-up, no ads, no paywall. → BMI Calculator — NHS-aligned ranges explained in plain English → TDEE & Calorie Calculator — 5 activity levels, targets for weight loss, maintenance & muscle gain → Blood Pressure Checker — AHA + NHS classification standards → Diabetes Risk Calculator — based on FINDRISC, the GP screening model Enter your numbers. Get your result instantly. That's it.
Hey Product Hunt! John Parker here, founder of Prime1mg.
We built these 4 calculators because people kept landing on our health content, asking follow-up questions like "but what does that actually mean for me?" A BMI article is fine — but a tool that takes your own numbers and gives you YOUR result is more useful.
All 4 are completely free. No email, no account, no paywall. Just enter your numbers and get a result.
A few things worth knowing:
- The Blood Pressure Checker uses AHA + NHS classification ranges (not a generic 5-tier system)
- The Diabetes Risk Calculator is based on the FINDRISC scoring model used by GPs in clinical practice
- The TDEE calculator accounts for 5 activity levels with calorie targets for 3 different goals
Try each tool directly:
- BMI Calculator → https://prime1mg.com/bmi-calculator
- TDEE & Calorie → https://prime1mg.com/tdee-calculator
- Blood Pressure → https://prime1mg.com/blood-pressure-checker
- Diabetes Risk → https://prime1mg.com/diabetes-risk-calculator
We're adding more tools over the coming months — Body Fat %, Waist-to-Hip Ratio, and a Hydration Calculator are next.
Happy to answer questions about how we built these or what health tools you'd find most useful. What would you want to see next?