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Running pace calculator
Pace per km and per mile, speed, and predicted 5K, 10K, half marathon and marathon times.
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- Works on any device
About Running pace calculator
Enter a distance and a time to get pace per kilometre and per mile, plus speed. It also predicts finish times for 5K, 10K, half marathon and marathon using your current result. A 5:00 min/km pace equals about 8:03 min/mile. Predictions assume matching training.
How to use Running pace calculator
- Enter a distance and your time, or a pace.
- Check the pace per km and per mile and the speed.
- Read the predicted 5K, 10K, half marathon and marathon times.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Free to embed on your own website, with a ready-made code to copy.
- Available in 10 languages.
Also known as
Frequently asked questions
What pace do I need for a 4 hour marathon?
About 5:41 per kilometre, or 9:09 per mile, held for the whole 42.195 km.
How accurate are the race predictions?
They are estimates based on your input, and they assume you train for the longer distance. Real race times depend on training, course, weather and pacing.
How do I convert min per km to min per mile?
Multiply the pace per km by 1.609. For example, 5:00 per km is about 8:03 per mile. The tool shows both so you do not need to calculate it.
Is Running pace calculator free?
Yes. Running pace calculator on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.
Can I put Running pace calculator on my own website?
Yes. Use the Embed on your site button under the tool to copy a short piece of code and paste it into your page. It is free, needs no account, and the tool keeps working inside your page.