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Calculate pace, speed & race finish time estimates.
Running Pace Calculator is a free browser-based tool that helps you calculate pace, speed & race finish time estimates. It is part of ToolsMonk's medical tools collection, so you can finish the job without downloading software, creating an account, or jumping between multiple websites.
This tool is especially useful for workflows such as working out your pace from a run's distance and time, projecting a race finish time from a target pace, and planning training paces for a goal race. Because it runs directly in your browser, you can use it on desktop, tablet, or mobile while keeping the process fast and easy for one-off tasks as well as repeat work.
Running Pace Calculator is designed for people who want a practical, privacy-friendly workflow with instant results inside the larger ToolsMonk library.
Enter any two of: distance, time, and pace
The tool calculates the third
See pace in min/km or min/mile
Use it to plan training and races
Calculates running pace, time, or distance from the other two
Pace in min/km or min/mile
Project finish times for race distances
Useful for training and race planning
Runs in your browser — your figures stay on your device
Free, with no signup
Working out your pace from a run's distance and time
Projecting a race finish time from a target pace
Planning training paces for a goal race
Comparing paces across distances
Running Pace Calculator is a powerful free online tool available on ToolsMonk that helps you calculate pace, speed & race finish time estimates. Whether you're a professional, student, or casual user, our running pace calculator provides instant, accurate results right in your browser without requiring any software installation or account creation.
As part of our Medical Tools collection, this tool is designed with simplicity and power in mind. All processing happens client-side, ensuring your data remains completely private and secure. The tool works seamlessly across all modern browsers on desktop, tablet, and mobile devices.
Pace Calculator works out running pace, time, or distance from the other two — pace in minutes per kilometre or mile — for training and race planning.
The core relationship is pace = time ÷ distance, and entering any two values solves for the third. That makes it versatile: compute your pace from a finished run, project the finish time a target pace would produce, or work backwards from a goal time to the pace you'd need to hold.
An important nuance for racing is that pace isn't constant across distances — you can hold a quicker pace over 5 km than over a marathon. So projecting a long-race time at your short-race pace overestimates; realistic cross-distance prediction uses models like Riegel's formula that account for the inevitable slowdown. Treat a flat same-pace projection as an optimistic best case.
It supports both min/km and min/mile, reflecting that runners and races mix units. Everything runs in your browser, keeping figures private. Pair it with the other ToolsMonk health and fitness calculators for training and wellness.
Pace slows over longer distances — don't project a marathon time from your 5K pace at the same speed
Plan a race by entering target pace + distance to see the finish time you'd hit
Switch between min/km and min/mile to match your training and race units
Common questions about this tool, its workflow, and what to expect before you use it.
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