Health tools that respect you
We build free, instant, private calculators so you can understand your health — no sign-up, no data collection, no noise. Just answers.
Our Mission
To make health knowledge accessible to everyone — for free, forever. We believe understanding your own health metrics shouldn't require a doctor's appointment, an app subscription, or giving away your personal data.
Privacy First
Every calculation happens entirely in your browser. Your weight, age, blood pressure — none of it ever touches our servers. We built this way on purpose, and we'll keep it that way.
Science Backed
All our formulas are sourced from peer-reviewed research and validated by established medical organisations. We cite our sources so you can trust — and verify — every result.
"I wanted a BMI calculator that didn't ask for my email. So I built one."— Muhammad Hamza, Founder
Built out of frustration, kept running out of love
HealthCalculator started with a simple problem: every existing health calculator either required you to create an account, showed you intrusive ads, or quietly sent your data somewhere you didn't know about.
We decided the internet deserved better. A place where you could check your BMI, calculate your eGFR, or convert your height — instantly, privately, and without any strings attached.
Today we serve over 5,000 people every month, and we're just getting started. Every new calculator we release follows the same rule: your data stays yours.
Muhammad Hamza
Founder, HealthCalculator
Muhammad Hamza is a fitness enthusiast who built HealthCalculator after growing frustrated with health tools that demanded an email address, served intrusive ads, or quietly harvested personal data.
His goal was simple: create a suite of accurate, clinically-validated calculators that anyone in the world could use for free — instantly, privately, and without any strings attached. Every calculator on this site reflects that commitment.
Have a question or suggestion? Muhammad personally reads every message sent to hamza@healthcalculator.io.
"Health data is deeply personal. It should stay that way."— Muhammad Hamza
Our Values
Speed
Results in milliseconds. No loading spinners, no waiting. Health information should be instant.
Accuracy
We use clinically validated formulas and update them whenever medical guidelines change.
Accessibility
Free to use. Always. No paywalls, no freemium tiers, no "pro" plans hiding the features you actually need.
Transparency
We explain every formula, list every limitation, and never make health claims we can't back up.
Simplicity
Clean interfaces that work on any device. No app download required, no account needed.
Community
We listen. Every calculator improvement, every new tool — driven by real feedback from real users.
Ready to take control of your health?
All our calculators are free, instant, and completely private. No sign-up required.