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m/s to mph

m/s to mph: type a value and read the result as you type, free and without signing up. The page also shows the value in every other speed unit. Nothing is uploaded: the maths runs in your browser.

How to convert speed units online

  1. 1Type the number you want to convert
  2. 2Check the units in From and To, or press Swap
  3. 3Read the result under the fields
  4. The converted value, plus every other unit.

What happens to your numbers

  • Nothing is uploaded.The sum is done by your browser. The number you type never leaves your device.
  • Exact definitions.1 mph is 0.44704 m/s, and 1 knot is 1852 meters per hour.
  • Works offline.Once the tool has been opened, it needs no connection.

What you can do

  • Convert any value, including decimals and negative numbers. The result changes as you type.
  • A worked example: 10 m/s = 22.3694 mph.
  • Press Swap to turn the conversion around without retyping the number.
  • See the same value in every other speed unit in one table: km/h, mph, m/s and knots.
  • Compare road speeds, wind and weather figures, or ship and aircraft speeds across km/h, mph, m/s and knots.

Good to know

  • Meters per second is the SI unit of speed, used in physics and for wind. 1 m/s is exactly 3.6 km/h, or about 2.237 mph.
  • Miles per hour is the road speed unit in the US and UK. 1 mph is exactly 0.44704 m/s, or about 1.609 km/h.
  • Results show up to 10 significant digits. Very large or very small values appear in exponent form, such as 1.500000e-7.
  • Speed limits are given in km/h in most countries and in mph in the US and UK. A limit of 100 km/h is about 62 mph.

Questions

Is this speed converter free?

Yes. It is free and needs no account or sign-up. Nothing you type is uploaded.

How exact is the result?

The factors are exact: 1 mph is 0.44704 m/s, 1 km/h is 1/3.6 m/s and 1 knot is 1852/3600 m/s. The result shows up to 10 significant digits.

How fast is a knot?

A knot is one nautical mile (1,852 meters) per hour, or 1.852 km/h. It is used for ships, aircraft and wind speeds.

Can I convert to a different unit?

Yes. Change the To unit, or read the table below the result, which lists the value in every other unit.

Related tools

How it works

Small tools that run in your browser.

Four steps

  1. Start with a file or a task

    Drop a file, search, or pick a task.

  2. The tool opens in a window

    Open as many as you like, side by side as tabs.

  3. Results collect on the right

    Drag a result into the next tool.

  4. Save when you're done

    Saved files go to your downloads.

Who uses what

Tool sets for common jobs.

Put a tool on your home screen

The icon opens that tool, like an app.

iPhone and iPad

  1. Open the tool in Safari.
  2. Tap Share (the square with the arrow).
  3. Choose “Add to Home Screen”, then Add.

Android

  1. Open the tool in Chrome.
  2. Tap the menu (⋮) at the top right.
  3. Choose “Add to Home screen” or “Install app”.

Computer

  1. Open the tool in Chrome or Edge.
  2. Click the install icon in the address bar.
  3. Choose Install.

Skills

Claude skills we use ourselves, one job each.