Running Calculator

Every calculator for training and racing in one place – free and without sign-up. Work out your pace right here or pick a calculator below.

Your pace

8:03/mi

7.5km/hmph

25:00Halfway

2:00per 400 m

All options in the pace calculator: work out time or distance, splits, predictions →

Plan your race

5KPace and splits for the 5K 10KPace and splits for the 10K Half MarathonPace and splits for the half marathon MarathonPace and splits for the marathon SplitsPlan your splits & print a pace band

Predict & train

Race PredictorPredict finish times for other distances Training PacesEasy, threshold & interval paces Heat PaceAdjust pace for temperature & humidity

Convert & look up

Pace CalculatorWork out pace, time or distance Pace ConverterConvert speed to pace and back Pace ChartFinish times from 5K to marathon

Calculators for runners

The Running Calculator brings together everything you want to work out for training and racing: How fast do I need to run for my goal time? Which splits do I need in the marathon? What can I run in a half marathon based on my 10K? How fast should I train – and how much slower in the heat?

Every calculator is free, needs no sign-up and runs right in your browser – on your phone just as well as on your computer. Switch between miles and kilometers at any time, print your results or share them via link.

FAQ

Which calculators are there?

A pace calculator, goal-time calculators for the 5K, 10K, half marathon and marathon, a split calculator with pace band, a race time predictor, a training pace calculator, a heat pace calculator, a pace converter (mph ↔ min/mile) and a pace chart.

Does the Running Calculator cost anything?

No. All calculators are free and work without sign-up.

Are my inputs stored?

No. All calculations run directly in your browser and your inputs are not sent to us. If you want to share a calculation, it is contained in the link you get with “Copy link”.

Can I use kilometers?

Yes. With the km | mi switch at the top of every page, all calculators work in kilometers, km/h and °C.