Pace Calculator

What is pace calculator?

Pace is the time it takes to cover one unit of distance, usually minutes per kilometer or per mile. Runners use it to set goals, plan races and track progress.

This calculator converts your time and distance into both paces and your speed, and shows the finish times for common race distances at the same pace.

How to use the pace calculator

1. Enter the distance and choose kilometers or miles.
2. Enter your time.
3. Read your pace, speed and race predictions.

How the pace calculator works

Pace per kilometer equals total seconds divided by kilometers. Pace per mile equals the kilometer pace times 1.609344. Speed equals distance divided by time in hours. Race times equal the pace times the race distance.

Worked example

Common uses of the pace calculator

• Setting race goals.
• Planning training runs.
• Comparing runs on different distances.
• Checking treadmill settings.
• Pacing a charity run.

Tips and common mistakes

Real race times for longer distances are usually slower than a simple pace projection.

Use the pace in training to practice goal speed.

Background: what to know before you rely on it

Pace and speed describe the same thing in opposite ways. Speed is distance per time, while pace is time per distance, and runners prefer pace because it is easy to hold in the head. Pace strategy matters in races: starting too fast is the most common reason for slowing late. Even splits or a slightly faster second half usually give the best result. Heat, hills and wind change effort, so judge by effort as well as by the watch.

Private, free and fast

This tool runs entirely in your browser. What you type or choose is not uploaded to a server and is not saved after you close the page, which keeps it fast and private. It is free to use as often as you like. See more in all calculators, or browse the full list of tools.

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Results are for information and education. For legal, financial, medical or security decisions, check with a qualified professional. Financial results are estimates and exclude fees and taxes unless the tool says otherwise.