What the Pace Converter Does
The Pace Converter turns a single time value into any other pace or speed unit you need. Whether you record your runs in minutes per mile or want to know your average speed in kilometers per hour, this tool converts cleanly between eight common units: per mile, per kilometer, miles per hour (mph), kilometers per hour (km/h), meters per minute, meters per second, yards per minute, and yards per second. It works for any units (metric, imperial, or both), so it suits runners, walkers, cyclists, and anyone analysing speed.
How to Use It
- Time (hh:mm:ss): Enter the value as hours, minutes, and seconds — for example
00:05:00for a 5-minute pace. - From: Pick the unit your time value represents (e.g. "Per Mile" if the time is your pace per mile).
- To: Choose the unit you want the result expressed in.
For pace units (per mile, per kilometer), the time represents how long it takes to cover one mile or one kilometer. For speed units (mph, km/h, m/min, m/s, yd/min, yd/s), the time value represents the magnitude of that speed.
The Formula Explained
Internally the converter first reduces your input to a common base — meters per second (m/s). The time is converted to total seconds:
seconds = hours×3600 + minutes×60 + seconds
For a pace per mile, speed in m/s = 1609.344 ÷ seconds (a mile is 1609.344 m). For pace per kilometer, m/s = 1000 ÷ seconds. Once the base m/s value is known, it is rescaled into your chosen output unit using each unit's conversion factor (e.g. ÷1609.344 for distance-based pace, ×3600 for per-hour speeds).
Worked Example
Suppose you ran a mile in 00:08:00 and select From = Per Mile, To = Kilometers per Hour.
- Time in seconds = 8 × 60 = 480 s
- Speed = 1609.344 ÷ 480 ≈ 3.353 m/s
- Convert to km/h: 3.353 × 3.6 ≈ 12.07 km/h
So an 8-minute mile equals roughly 12.07 km/h, or about a 4:58 per-kilometer pace.
FAQ
Why do I enter speed as a time? The tool uses one consistent input box. For speed units the hh:mm:ss field holds the numeric magnitude, while for pace units it represents the time taken to cover one mile or kilometer.
Which units are imperial vs metric? Per mile, mph, yards per minute, and yards per second are imperial; per kilometer, km/h, meters per minute, and meters per second are metric. You can freely convert between the two systems.
How accurate are the conversions? Conversions use exact factors (1 mile = 1609.344 m, 1 yard = 0.9144 m), so results are precise to the rounding shown.
