Unit calculator

Scientific math and conversions

From the open-source project Numbat

Do math with units, like 5 inches plus 2 feet in centimeters.

Make it mineTry it (opens the authors’ own copy in a new tab)

“Make it mine” asks you to sign in first. On the Free plan, your copy is your one app; you can delete it any time.
“Try it” opens the authors’ own copy, not yours.

Made by
sharkdp
Licence
MIT OR Apache-2.0
Popularity
2.8k stars on GitHub
Uses
Your browser

What you can do

  • Multiply a speed by a time and get the distance
  • Use built-in constants, like the speed of light
  • Get a clear warning when the units don't match

Who it’s forStudents, engineers and anyone who converts units a lot

Once it’s yours

  • Your own copy, at its own address
  • Anyone with its address can open it, until you choose who can
  • Change it with your own coding agent

Ideas for changing it

Once it’s live, give any line below to your coding agent.

  • Build in our own units, like 1 crate = 24 bottles

  • Show a few example calculations under the input box

  • Make it look less like a programmer's terminal

Source and licence

It comes from the open-source project Numbat: its authors, sharkdp, published the code for anyone to use and change. Its licence covers the code, not the name, so the copy on Tofu goes by a plain name.

Its licence, MIT OR Apache-2.0, lets you use and change it freely, as long as you keep the authors’ copyright notice.

Your copy is the version you copied; the authors’ later updates don’t arrive by themselves.

This version on TofuThe authors’ original code

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