Calcumber - Calculate & Share

Calcumber is a simple but powerful calculator. Perform everyday calculations with ease, or use variables and units for engineering and scientific calculations. Copy complete calculations to apps like Word, Writer, Excel, PowerPoint or Outlook, with an editable link.

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Use below embedded Calcumber as starting point.
Edit the calculations and see the results changing.

Arithmetic Calculations:  
(2 + 3) * 3 15
ans / 5 3
   
Variables:  
n = 7 7
n * (n-1) 42
   
Units:  
5 m + 30 cm  to ft 17.3885 ft
   
Trigonometry:  
sin(30ยฐ) * 7 m 3.5 m
   
Energy bill:  
60 W * 1 year * 17 USDct/kWh 89.4132 USD

Features

๐ŸŒฟ Naturally type expressions โž” get immediate results

๐Ÿ”— Copy and share โž” keep calculations editable with a link

๐Ÿงฉ Variables and constants โž” pi, e, G, mu0

๐Ÿ“ Real-world units โž” 50 mph to km/h

๐Ÿงช Scientific functions โž” sin, acos, log, round, and more

โ™จ๏ธ Thermodynamic fluid properties โž” refrigeration, heat pumps, steam and air

๐Ÿ’ก Installation optional โž” run directly in your browser

Use Calcumber Anywhere

Calcumber works directly in your browser and can optionally be installed as an app on Windows, macOS, and Linux. Whether installed or not, every calculation can be shared simply by sending a link. The recipient can view, edit, and continue the calculation without installing Calcumber.

Calculations can also be copied as formatted tables into Word, Excel, PowerPoint, LibreOffice, or other applications. Together with the shared link, they remain fully editable.

Calculating the weight of a US Letter page using Calcumber.

Math Journal

Calcumber Math Journal is an Add-In for Microsoft Word: Type your expressions directly in your document and get the result immediately. Perfect for keeping problem, explanation, and solution together in one place.

Screenshot of Calcumber Math Journal

Calculation tool tightly integrated into Word, no app switching.

Math Journal is currently based on the MathJS math engine - it will be based on the Calcumber engine in the future.

More on Math Journal | Microsoft Marketplace

Alternatively, use Calcumber web app and paste the calculation into Word or any other app and keep it editable with a link โ€” less integrated, but more responsive.

Last updated: 2026-05-19