Free Health Calculators — Private by Design
Health information is personal. Toolisk's health calculators run entirely in your browser — your weight, height, age, and other measurements never leave your device. There are no accounts, no cookies tracking your health data, and no server-side processing.
These tools use established clinical formulas — the WHO BMI classification, the Mifflin-St Jeor equation for BMR — to give you accurate, reference-quality results. They are not a substitute for medical advice, but they are a reliable starting point for understanding your numbers.
BMI Calculator — Body Mass Index
The BMI calculator computes your Body Mass Index from height and weight, classifies it using WHO categories (Underweight, Normal, Overweight, Obese), and shows the healthy weight range for your height. Supports both metric (cm/kg) and imperial (ft, in/lbs) units. The optional BMR section estimates your Basal Metabolic Rate using the Mifflin-St Jeor equation.
Frequently Asked Questions
Are all Toolisk health tools really free?
Yes. Every tool is completely free with no sign-ups, paywalls, or usage limits.
Is my health data safe?
Absolutely. All calculations run entirely in your browser. Your height, weight, age, and other inputs never leave your device.
Can I use these for medical decisions?
These tools are informational screening aids, not diagnostic instruments. Always consult a qualified healthcare provider for personalized medical guidance.