Free Fitness Calculators
Personalized calculators for steps, calories, distance, heart rate, and training pace. All free, browser-based, no signup required.
Most Popular
High Traffic ToolsStep Distance Calculator
Convert steps to distance or distance to steps based on your height
Steps to Calories Calculator
Calculate how many calories you burn from your daily steps
Walking Calories Calculator
Calculate calories burned based on walking distance or time
Steps Per Mile Calculator
Find out how many steps are in a mile or kilometer
Daily Step Goal Calculator
Get a personalized daily step goal recommendation
Weight Loss Walking Calculator
Calculate walking requirements for your weight loss goals
BMI Calculator
Calculate your Body Mass Index with health insights
Heart Rate Zones Calculator
Find your 5 training zones to optimize fat burn and endurance
Running Pace Calculator
Convert pace, speed, and predict race finish times for any distance
Body Fat Percentage Calculator
Calculate body fat % using the accurate U.S. Navy method
Water Intake Calculator
Find out how much water you should drink daily based on weight and activity
Activity to Steps Converter
Convert cycling, swimming, yoga, and more into equivalent steps
TDEE Calculator
Calculate your Total Daily Energy Expenditure and daily calorie needs
Macro Calculator
Calculate your daily protein, carbs, and fat targets for your fitness goal
Marathon Race Predictor
Predict your marathon, half marathon, 10K, and 5K finish times
All 33 Fitness Calculators
33 total toolsStep Distance Calculator
Convert steps to distance or distance to steps based on your height
Steps to Calories Calculator
Calculate how many calories you burn from your daily steps
Walking Calories Calculator
Calculate calories burned based on walking distance or time
Treadmill Calorie Calculator
Calculate treadmill calories by speed, incline, weight and time
Treadmill Incline Calculator
Convert treadmill incline into the flat pace it is worth, plus elevation climbed
Rucking Calorie Calculator
Calories burned rucking, by pack weight, pace, grade and terrain
Steps Per Mile Calculator
Find out how many steps are in a mile or kilometer
Walking Time Calculator
Estimate how long it takes to walk any distance
Daily Step Goal Calculator
Get a personalized daily step goal recommendation
Weight Loss Walking Calculator
Calculate walking requirements for your weight loss goals
BMI Calculator
Calculate your Body Mass Index with health insights
Heart Rate Zones Calculator
Find your 5 training zones to optimize fat burn and endurance
Running Pace Calculator
Convert pace, speed, and predict race finish times for any distance
Body Fat Percentage Calculator
Calculate body fat % using the accurate U.S. Navy method
Water Intake Calculator
Find out how much water you should drink daily based on weight and activity
Activity to Steps Converter
Convert cycling, swimming, yoga, and more into equivalent steps
Calorie Deficit Calculator
Calculate how many calories to eat per day to reach your goal weight
Resting Heart Rate Calculator
Check your cardiovascular fitness level and Karvonen heart rate zones
TDEE Calculator
Calculate your Total Daily Energy Expenditure and daily calorie needs
Macro Calculator
Calculate your daily protein, carbs, and fat targets for your fitness goal
Marathon Race Predictor
Predict your marathon, half marathon, 10K, and 5K finish times
VO2 Max Calculator
Estimate your aerobic fitness level using heart rate or Cooper test
Training Pace Zones
Get your 5 personalized running training pace zones from any race result
Pace to Speed Converter
Convert min/km, min/mile, km/h, and mph instantly
Race Time Predictor
Calculate finish time from pace or find the pace needed for your goal time
Distance Equivalent Calculator
Convert km, miles, meters, yards — with steps, time, and calories
GPX Viewer
Upload and view GPX files on an interactive map with stats
Strava Stats Generator
Turn a run into a transparent stats overlay for Instagram Stories
BMR Calculator
Calculate your basal metabolic rate with three clinical formulas
Weight Loss Calculator
Daily calorie target and timeline to reach your goal weight
Calories Burned Calculator
Calories burned across 50+ activities using MET values
Ideal Weight Calculator
Four clinical formulas plus the healthy BMI range for your height
Waist to Hip Ratio Calculator
Check your waist-to-hip ratio against WHO risk thresholds