Pace
Convert pace, speed and splits into any unit.
Tools for your running
One running calculator for everything – from pace to race prediction.
From a single recent result, Metricpace builds your pace, race predictions from 5K to marathon and your training zones – and corrects your effort for elevation, heat and wind. Plus energy and hydration needs, and age grading. Built by a runner, for runners.
Free·No account·Works offline·Add to home screen
Nine tools, one tab
Everything you reach for as a runner – in one place
No tables, no sign-up. Enter a number, get an answer.
Race
Predict your time over any distance, 5K to marathon.
Elevation
Convert climbs into equivalent effort on flat ground.
Wind
Adjust your effort for the day’s head- and tailwind.
Heat
Adjust pace for temperature and humidity – heat makes every kilometre harder.
Nutrition
Energy and carbohydrate needs for long sessions.
Sweat
Estimate fluid and sodium loss and plan your intake.
Age
Age-grading scores to compare performances across the years.
Zones
Pace-based training zones from your current fitness.
How it works
One number in. Answers for a whole training plan out.
1 · Enter a result
A recent race or time trial – even a hard workout will do.
2 · See your numbers
Predictions, paces and zones appear instantly; elevation and wind corrections on tap.
3 · Then go run
Add it to your home screen and Metricpace is there at the start line – offline and ad-free.
Built on science
Numbers you can trust
Metricpace runs on established, peer-reviewed sports-science models – not rules of thumb. Every tool shows its sources, so you can see where each number comes from.
Race predictionRiegel’s endurance formula
ElevationEnergy cost of running on gradients (Minetti)
HeatHeat & performance research (El Helou, Ely, Sawka)
Training zones & thresholdsCritical Speed and LT1/LT2 (Billat; Poole & Jones)
Pace zonesJack Daniels’ VDOT model
Age gradingWorld Masters Athletics (WMA) factors
Good to know
Questions, answered
Is Metricpace free? +
Yes. The core tools – pace, race prediction, elevation and wind – are free and need no account. A few advanced tools are marked PRO and go deeper into fuelling, hydration, age grading and training zones.
What language is the calculator in? +
The calculator comes in several languages – German, English, Spanish, French and Japanese. It matches your language and can be switched at any time.
Do I need to install anything? +
No. Metricpace runs in any browser. If you like it, add it to your home screen – then it behaves like a native app and works offline once it has loaded.
How does the race prediction work? +
You enter a recent result and Metricpace estimates your time over any other distance, from 5K to marathon – using established endurance-performance models, not a simple factor.
Does it account for elevation and wind? +
Yes. The elevation tool converts climbs into equivalent effort on flat ground, so a hilly course becomes comparable to a flat one. The wind tool adjusts your effort for head- and tailwind.
Find out what you’re capable of.
It takes one number and about ten seconds.
Open the calculator
Or scan with your phone
QR code as SVG (for print)