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Speed Converter: Convert Units Online

This free speed converter converts 7 units, including metre per second, kilometre per hour and mile per hour. Type a value, choose the units and read the answer, plus the value in every other unit.

By Debmedia Technologies LLP · Kolkata, India · Updated

What Is It and When Do You Need It?

Speed is distance covered per unit of time. Roads use kilometres or miles per hour, ships and aircraft use knots, and physics uses metres per second.

This converter handles 7 units for metre per second and shows the result in all of them at once, so you rarely need a second lookup.

How to Use This Tool

  1. Type the value you want to convert.
  2. Choose the unit you have in the From list.
  3. Choose the unit you want in the To list.
  4. Press Convert and read the answer and the table of every unit.

How the Calculation Works

Every unit is stored as a multiple of one reference unit (the metre per second). To convert, the value is multiplied into the reference unit and then divided by the size of the target unit. All factors are exact or taken from standard definitions, and results show up to ten significant digits.

Worked Example

You enterYou get
1 m/s3.6 km/h
10 m/s22.369363 mph
100 km/h27.777778 m/s

Reference values:

FromTo
1 Metre per second3.6 km/h
1 Metre per second2.2369363 mph
1 Metre per second1.9438445 kn
1 Metre per second3.2808399 ft/s
1 Metre per second0.00293867 Mach
1 Metre per second3.335641e-9 c

Common Uses

  • Comparing speed limits and car specifications between countries.
  • Marine and aviation speeds in knots.
  • Sports speeds such as sprint or bowling speed.
  • Physics homework in metres per second.

Tips and Common Mistakes

  • To convert km/h to m/s, divide by 3.6.
  • One knot is one nautical mile per hour, about 1.852 km/h.
  • Use the table under the answer to see the same value in every unit.

Next, you may need the pressure converter, energy converter, power converter, force converter.

Everything runs in your browser. Nothing you type is uploaded, stored or sent to any outside service.

Frequently Asked Questions

Choose metre per second in the From list and kilometre per hour in the To list, type your value and press Convert. For example 1 m/s equals 3.6 km/h.
It uses the exact or standard definitions of each unit and shows up to ten significant digits. It is suitable for school, cooking, travel, engineering estimates and general use.
Yes. Decimals, commas and scientific notation such as 1.5e6 are accepted. Very large and very small results are shown in scientific notation.
No. The conversion runs in your browser and nothing is sent to us.

Disclaimer: results are calculated in your browser from the numbers you enter. Check important results before you rely on them for money, health, safety or legal decisions.