Free health and daily life calculators
Quickly calculate BMI, an indicative need or a sleep schedule. Results provide references, not a diagnosis.
Subcategories
All tools
Dog & cat kibble ration calculator
Calculate your dog or cat’s daily kibble portion based on weight, age, neutering, activity, body condition and mix-feeding. Free estimate, no sign-up.
mg ↔ mL Converter
Convert mg to mL (and back) from a concentration. Compute pediatric weight-based dose, handles syrups, suspensions and injectable solutions. A handy guide for nursing students and parents.
BMI & ideal weight calculator
Compute your BMI in 10 seconds and find your target ideal weight through 3 medical formulas (Lorentz, Creff, Devine). Bonus: body age and clear target.
Sleep tracker
Log your nights in one click, calculate your cycles, track your 7-day sleep debt and your naps. No sign-up, no sensor: everything stays on your device.
Ideal weight
Calculate your target weight in 10 seconds. The simulator combines the 3 reference medical formulas — Lorentz, Creff and Devine — and shows the average for a realistic health goal.
Basal metabolic rate
Calculate the calories your body burns at rest with the Mifflin-St Jeor formula. Get your BMR, TDEE maintenance, loss/gain targets and an estimate of how long it takes to reach your goal.