Calculate running pace, speed, and race times.
The Pace Calculator solves running pace, time, or distance — enter any two of the three values and it calculates the third, with common race distances like 5K, 10K, half marathon, and marathon built in. It's free and runs entirely in your browser, helping you plan splits or a goal finish time.
Made for everyone. Typical uses:
Explore more in Calculators, read the guides and articles, or see how we test our tools.
Calculate speed, distance, or time using the speed formula.
Best for figuring out how long a road trip will take at a given average speed
Calculate calories burned during exercise based on activity, duration, and weight.
Best for sizing a workout session to hit a specific calorie deficit target
Calculate your daily calorie needs based on age, gender, weight, height, and activity level.
Best for setting a calorie target before starting a new diet plan
Calculate your Body Mass Index (BMI) based on height and weight.
Best for checking body mass index for personal health tracking
Estimate your body fat percentage using measurements.
Best for tracking body composition changes over a training program alongside weight