Health Tools
Free health calculators
Six simple tools that run entirely in your browser. No signup, nothing stored on our servers, nothing sold to anyone.
- BMI CalculatorBody mass index, with the lower cut-offs that apply to South Asians.
- Daily Calorie NeedsEstimate resting metabolism and daily energy needs.
- Daily Water IntakeA starting estimate for how much fluid to aim for.
- Pregnancy Due DateEstimated due date and current stage from your last period.
- Waist-to-Height RatioA better guide to central fat than BMI alone.
- Medical Unit Converterkg/lb, cm/ft, °C/°F, and glucose and cholesterol units.
These are estimates, not assessments. Every calculator here applies a published formula to the numbers you type in. A formula cannot see your muscle mass, your medical history or your test results, so a result is a starting point for a conversation — never a diagnosis, and never a reason to change a medicine. See our medical disclaimer.