Speed Converter

Convert speed units or a running pace and see the reciprocal measure.

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How this works

The tool runs in this browser. Your file or text is not uploaded to UseFreeTools. Check this tool's limits for anything it may save on your device.

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Convert speed or pace controls

Showing an example. Edit to see your own.

A speed and a pace are reciprocals, not the same number in different units.

For a speed, a number such as 36. For a pace, enter 6:00 or decimal minutes such as 6.5.

Used for a speed you enter. A pace you enter is read with the pace unit below.

Only used when a pace is entered.

Speed results use this precision. Clock pace is rounded to the nearest second to stay readable.

Processed in your browser. Your inputs stay on this device.

How to use Speed Converter

  1. Under What are you entering?, choose A speed or A pace.
  2. Enter the Value: a number for speed, or a time such as 6:00 for pace.
  3. For a speed, choose Speed unit of the value; for a pace, choose Pace unit.
  4. Choose Convert the speed to and, if needed, Decimal places.
  5. The result and reciprocal pace update as you change the values.

Example: Speed Converter

Convert kilometers per hour to meters per second.

You add
What are you entering?: A speed. Value: 10. Speed unit of the value: Kilometers per hour (km/h). Convert the speed to: Meters per second (m/s). Decimal places: 2.
You get
The summary reads 10 kmh is 2.78 m/s, and the pace row shows 6:00 (6 min/km). One kilometer per hour is 0.2778 meters per second, so 10 gives 2.78. The result table also carries a Factor row of 1 kmh = 0.2777777778 m/s.

Options

What are you entering?
A speed is distance per time; a pace is time per distance. Choose the input type before entering a value, because a reciprocal cannot be treated as an ordinary unit change.
Decimal places
Choose 0, 2, 4, 6 or 8 places for a non-whole speed result. Clock pace is rounded to the nearest second except for very short subsecond paces.

Supported inputs and limits

Speed units are meters per second, kilometers per hour, miles per hour, feet per second and knots. Pace uses minutes per kilometer or mile. Enter a nonnegative speed no greater than 1 billion in the selected unit, or a positive pace no greater than 10 million seconds per selected distance. Zero speed has no finite pace. A bare 6.5 means decimal minutes, while 6:30 means six minutes and thirty seconds. This tool does not predict route time or athletic performance; check units and rounding before applying a result.

Where your input is processed

This tool processes your input in this browser. Your text and files are not uploaded to UseFreeTools. Check this tool's limits for anything it may save on your device.

How speed and pace relate

Speed divides distance by time, while pace divides time by distance. Ten kilometers per hour means one kilometer takes one tenth of an hour, or 6:00 per kilometer. The converter calculates from the underlying speed before rounding the displayed clock pace, so a rounded result is a presentation choice rather than a new input.

Questions about Speed Converter

Is 6.5 pace the same as 6:30 pace?

Yes. A bare 6.5 is decimal minutes, so the half minute is 30 seconds. A colon makes the minutes and seconds explicit. Choose per kilometer or per mile before converting.

Why does a faster speed give a lower pace number?

Pace measures the time needed for one unit of distance. At 10 km/h, one kilometer takes six minutes. Increasing speed makes that time shorter.

What pace does zero speed produce?

There is no finite minutes-per-kilometer or minutes-per-mile value at rest. The tool reports that boundary in the pace row instead of displaying zero.

Are knots and miles per hour the same?

No. A knot is one nautical mile per hour, or 1.852 km/h. A mile per hour uses the international land mile, which is 1.609344 km. Select the exact source unit on the form.

Project manager: Tony Hines · Content updated 29 September 2026 · Report a problem