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Speed Converter — Free Online Unit Converter

Speed Converter converts using 1 mph = 1.60934 km/h = 0.868976 knots — exact SI-derived conversion factors between miles per hour, kilometers per hour and knots. It runs entirely in your browser, so nothing you enter is uploaded to a server. Free to use, with no signup and no watermark.

How to use Speed Converter

1. Enter or paste your speed value.
2. Pick the units or target format.
3. Copy the converted result.

Frequently asked questions

What formula does Speed Converter use?

1 mph = 1.60934 km/h = 0.868976 knots — exact SI-derived conversion factors between miles per hour, kilometers per hour and knots.

Do I need to install anything?

No. Speed Converter runs in any modern browser on desktop or mobile, with nothing to install.

Is there a limit on how many conversions I can do?

No. Conversions run locally in your browser, so there is no quota and no rate limit.

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