Running, Fitness, and Health Calculators

Our running calculators and training calculators are used by thousands of runners and athletes globally; whether to check your running pace, calculate your estimated marathon finishing time, or more.

Running Calculators

Running, Fitness, and Health Calculators 1

Running Pace Calculator

Our straightforward, go-to running pace calculator.

It can be used to convert distance and time to pace, pace and distance to time, and time and pace to distance.

As runners, our standard pace metric tends to be min/mile or min/km: that’s exactly what this calculator works out for you.


Running, Fitness, and Health Calculators 2

Age-Graded Running Performance Calculator

By inputting a previous race time, your age, and your gender, you can:

  • Compare your run times to other people regardless of age and gender using the age grade score.
  • View the equivalent speed you would have run if you were within the 20-30 age range.
  • View your predicted race times for all common race distances.

Running, Fitness, and Health Calculators 3

Marathon Finish Time Predictor

How this one works:

Input a previous running race result or two (from 5k to HM) and rate how difficult you found it, then add in your current weekly mileage – and it’ll give you a scarily-accurate marathon finishing time.


Running, Fitness, and Health Calculators 4

Race Time Prediction Calculator

This calculator works by simply supplying a single previous race result – of any distance – and it’ll give you finishing time estimates for all standard running event lengths, from 5k to 100 miles.

While it’s less detailed than our Marathon Finishing Time predictor above, it gives you estimates using both industry-leading Pete Riegel and David Cameron formulas – and can be a great sense-check for pacing your next race.


Running, Fitness, and Health Calculators 5

Half Marathon Pace Calculator

This calculator gives you your target pace and even time splits for a half-marathon race based on your target race time.

The results are shown in both miles and kilometers.

To achieve your target race time, your average speed needs to be the same as the target pace given by the calculator or faster.


Running, Fitness, and Health Calculators 6

Marathon Pace Calculator

This calculator gives you your target pace and even time splits for a marathon race based on your target race time.

The results are shown in both miles and kilometers.

To achieve your target race time, your average pace needs to be the same as the target pace given by the calculator or faster.


Running, Fitness, and Health Calculators 7

The Rockport Walk Test & Calculator: Calculate Your V02 Max

The Rockport WalkTest, also called the Rockport 1 mile walk test or the Rockport fitness walking test, is a self-administered, submaximal VO2 max test that can help you estimate your V02 max simply by walking 1 mile as fast as possible.

Test your VO2 max with ease by following our measuring instructions and using our calculator to process the results. You can also calculate it yourself and compare your results to others.


Running, Fitness, and Health Calculators 8

Elevation Grade Calculator: Measure Slope Angle & Steepness

This calculator can be used to calculate the elevation grade of a slope based on horizontal distance (run) and vertical distance (rise), providing you with the elevation grade as a decimal, a percentage, and a ratio, in addition to the angle of elevation.

It is useful for runners or athletes who want to calculate the steepness of a particular incline or vertical change.

Health and Fitness Calculators

Running, Fitness, and Health Calculators 9

TDEE Calculator – Calculate Daily Calories Burned

This calculator will estimate how many calories you burn in a day based on your weight, height, age, and activity level.

In addition to telling you how many calories you need to maintain your weight and your BMR, it also tells you how many calories you should eat per day to lose weight or gain weight.


Running, Fitness, and Health Calculators 10

Calories Burned Calculator (Per Activity): 800+ activities

Select your activity from the list of over 800, enter the activity duration and your weight, and the calculator will do the rest.


Running, Fitness, and Health Calculators 11

Body Fat Calculator – Measure Your Body Fat Percentage

To get your result, you’ll need to know your weight and height.

You’ll also need a tape measure to measure your waist and neck circumference, as well as your hip circumference if female.


Running, Fitness, and Health Calculators 12

Ideal Weight Calculator: Calculate Your Healthy Body Weight Range

This calculator estimates your ideal weight and BMI healthy weight range based on your height and gender.

It is very important to note that there is no single ideal weight for a given height, so the ideal weight result given by this calculator should not be considered an absolute goal or target to aim for.


Running, Fitness, and Health Calculators 13

BMI Calculator: Body Mass Index Healthy Weight Assessment

BMI is a general indicator of whether or not someone is a healthy weight relative to their height.

Our calculator shows you your BMI, your BMI health category, where you fall on the BMI scale, and your healthy weight range.


Running, Fitness, and Health Calculators 14

Calorie Calculator – Measure And Plan Your Daily Calorie Intake

This calculator will estimate how many calories you burn in a day based on your weight, height, age, and activity level.

In addition to telling you how many calories you need to maintain your weight, it also tells you how many calories you should eat per day to lose weight or gain weight.