Running Pace Calculator — Free Online Tool

The Running Pace Calculator solves for whichever of pace, distance, and time you are missing, given the other two, and converts between minutes per kilometre and minutes per mile.

Pace per unit distance is the metric runners actually train and race by, because it is the one that transfers between efforts. Knowing you ran 10 kilometres in 52 minutes is less useful than knowing that was 5:12 per kilometre, since the pace figure tells you directly whether a target race time is realistic and what pace to hold to achieve it.

Working backwards from a goal is where the calculator earns its place. A sub-4-hour marathon requires roughly 5:41 per kilometre sustained for 42.2 kilometres, and seeing that number makes the goal concrete in a way the finish time does not. It also exposes goals that are not currently realistic, which is more useful before a race than during one.

Two things worth accounting for when planning from a calculated pace. Race courses measure slightly long in practice, because almost nobody runs the exact shortest route through every bend — planning a small buffer against your target avoids missing it by seconds. And pace does not hold linearly across distances: a pace sustainable for 5 kilometres is well beyond what is sustainable for a marathon, which is why race-time predictors use a scaling factor rather than simple multiplication.

This is general information, not training or medical advice. Calculation happens in your browser.

Our Running Pace Calculator is completely free to use with no signup required. For this tool, processing runs in your browser — your files and data stay on your device and are not uploaded to our servers.

Whether you are a developer, designer, student, or business owner, this tool is designed to save you time and make your workflow more efficient. Bookmark this page to access it whenever you need it — it will always be free.