Free Health Calculators
7 free health and fitness tools — BMI, calories, body fat, heart rate, and more.
7 tools in Health
12 Stone in Kg
Convert 12 stone to kg by multiplying by 6.35. Use our calculator for quick results. Free, instant, no signup.
Calorie Maintenance Calculator
Calculate your daily calorie needs instantly by entering your age, weight, height, and activity level. Free, no signup required.
Heart Age Calculator
Discover your heart age compared to your real age with our free Heart Age Calculator. Identify cardiovascular risk factors and take control of your heart health today.
Maintenance Calories Calculator
Calculate your maintenance calories quickly using your age, weight, height, and activity level. Get instant results. Free, no signup required.
One Rep Max Calculator
Use our free One Rep Max Calculator to find your maximum strength for any exercise. Enter your weight and reps to instantly calculate your 1RM and training zones.
TDEE Calculator for Women
Use our free TDEE Calculator for Women to find out exactly how many calories you need per day. Calculate your maintenance calories, deficit, or surplus based on your activity level.
Weight loss calculator
Calculate your weight loss goals using your current weight, target weight, and timeframe. Free, instant, no signup.
Frequently Asked Questions
Common questions about health calculators