Our free fitness calculators are ready to use on your own site. They are perfect for bloggers, coaches, teachers, and clinics. Just copy the embed code for a tool, paste it into any page on your site, and the tool runs there for your visitors. The Powered by line keeps them free.
Macro Calculator
Work out daily protein, carb, and fat targets for your goal.
Protein Calculator
Find your daily protein target from your weight, goal, and activity.
BMI Calculator
Check your body mass index from your height and weight.
Calorie Calculator
Estimate your daily calorie needs for maintenance, weight loss, or weight gain.
Intermittent Fasting Planner
Build a fasting plan with clear eating and fasting windows.
Open the Intermittent Fasting Planner
One Rep Max Calculator
Estimate your one-rep max from the weight you lifted and your reps.
Open the One Rep Max Calculator
Heart Rate Zones Calculator
Find your heart-rate training zones from your age and resting heart rate.
Open the Heart Rate Zones Calculator
Body Fat Percentage Calculator
Estimate your body fat percentage from your measurements.
Open the Body Fat Percentage Calculator
Calories Burned Calculator
Estimate the calories you burn during exercise and daily activity.
Open the Calories Burned Calculator
Water Intake Calculator
Calculate how much water to drink each day.
Open the Water Intake Calculator
Sleep Calculator
Find the best times to go to bed and wake up, based on sleep cycles.
