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Speed Converter

Enter one speed and instantly convert it to km/h, m/s, mph, knots, and other common units.

Use a comma or period as the decimal separator; do not use thousands separators.

All units

Metric and SI

Use as target unit: Millimetres per second
Millimetres per second (mm/s)
277.777777778
Use as target unit: Centimetres per second
Centimetres per second (cm/s)
27.7777777778
Use as target unit: Metres per minute
Metres per minute (m/min)
16.6666666667
Use as target unit: Kilometres per hour
Kilometres per hour (km/h)
From
1
Use as target unit: Metres per second
Metres per second (m/s)
0.277777777778
Use as target unit: Kilometres per second
Kilometres per second (km/s)
0.000277777777778

Imperial and US customary

Use as target unit: Feet per minute
Feet per minute (ft/min)
54.6806649169
Use as target unit: Inches per second
Inches per second (in/s)
10.9361329834
Use as target unit: Feet per second
Feet per second (ft/s)
0.911344415281
Use as target unit: Miles per hour
Miles per hour (mph)
To
0.621371192237
Use as target unit: Yards per second
Yards per second (yd/s)
0.30378147176

Nautical

Use as target unit: Knots
Knots (kn)
0.539956803456

Scientific reference

Use as target unit: Speed of light in vacuum
Speed of light in vacuum (c)
9.26566931106e-10
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Good to know

The Speed Converter converts speeds directly in your browser. It supports common units such as km/h, mph, m/s, knots, and Mach and is useful for everyday tasks, school, studies, engineering, travel, shopping, planning, and quick plausibility checks.

Typical searches for this page include km/h to mph, meters per second to km/h, convert knots. Calculation runs locally in the browser, without upload or server processing. Navigation, aviation, and safety systems require authoritative instruments and standards.

Typical use cases

Quick everyday conversion

Convert values for recipes, measurements, travel, online shopping, DIY work, or product specifications without opening a spreadsheet.

Compare technical values

Use the converter for technical documentation, data sheets, lab values, device settings, or international specifications.

Local calculation without tracking

Entered values stay in the browser. This is useful for drafts, internal calculations, and quick checks where no external service is needed.

Tips for better results

Check unit and rounding

Check the source unit and decide whether the rounded display is sufficient or whether more decimal places are useful.

Cross-check critical values

For legal, medical, safety-critical, or regulated measurement use, compare results with the applicable standard or measurement source.

How it works

Step by step

  1. 1

    Enter a value

    Enter the source value and choose the matching starting unit.

  2. 2

    Compare results

    Target values are calculated automatically and shown in the most important units.

  3. 3

    Use the value

    Copy the matching result into documentation, planning, orders, code, spreadsheets, or notes.

Features

Browser-based conversion

Calculation runs locally. Values are not sent to a server for conversion.

Multiple units at a glance

After input, matching target values are shown immediately in multiple units.

Flexible display

Options such as grouping, decimal places, or source unit help make results easy to review.

Frequently asked questions

Are inputs uploaded when using Speed Converter?

No. Conversion runs locally in the browser. Entered values are not transferred to Xoricon or another server.

How accurate is the conversion?

The converter uses standardized factors and JavaScript floating-point numbers. Displayed results are rounded and are not intended for regulated metrology or uncertainty calculations.

Can I see multiple units at once?

Yes. Many converters show several matching target values after one input, so you can quickly find the relevant unit.

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