ToolsUnit ConvertersFluids & Flow

Velocity Converter

Convert between velocity and speed units. Metres per second, kilometres per hour, miles per hour, feet per second. Essential for seepage velocity and flow calculations.

Last updated 17 March 2026

About this tool

Convert between velocity and speed units. Useful for seepage velocity calculations, groundwater flow analysis, and general engineering applications.

Revision history

17 March 2026: Initial release

Disclaimer

This tool is provided for educational and general information purposes only. It is not a substitute for professional engineering advice, design or verification.

Diggy and its contributors are not licensed engineering consultants and no results generated by this tool should be used directly for construction, design or safety-critical decisions.

All values and outputs are based on published empirical correlations and should be independently checked and confirmed by a qualified geotechnical engineer before use.

By using this tool, you accept full responsibility for how you interpret and apply the information provided.

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Velocity / Speed

Metres per second (m/s)

Centimetres per second (cm/s)

Millimetres per second (mm/s)

Kilometres per hour (km/h)

Feet per second (ft/s)

Miles per hour (mph)

Common references

1 m/s

= 3.6 km/h

1 m/s

≈ 2.24 mph

100 km/h

≈ 62 mph

1 ft/s

≈ 0.305 m/s