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Calc4all is a portable Mac/Windows calculator with practical built in features! This project started out because there was no other simple portable calculator out there with all the features that I wanted built in. Calc4all has a simple, easy-to-use interface with so many useful features, you’ll find that it will quickly become your favorite calculator!

Some of Calc4All’s Features include…

  • Completely portable – No installation needed
  • Compatilble with all Windows versions 2000 & up (2000, XP, Vista, Win7, Win8, Server 2003 & Server 2008)
  • New! Now available for Mac users and soon Linux users
  • Incredibly small (176KB Windows, 803KB Mac) and can run from a hard drive, USB Flash drives, etc.
  • Updated! User Interface received a complete overhaul
  • * Updated! Conversions, Tape, many buttons, etc.
  • New! Fully High DPI Aware in Windows Vista, 7, & 8 and Mac
  • New! Multiple calculator size options
  • * New! Unlimited number of Loan Profiles
  • * New! Custom App button – Start your favorite program from the custom button
  • New! Repeat last entry with Ctrl and +,-,/,x
  • * Laptop 10 Key Support (M, J, K, L, U, I, O, etc.) for keyboards without number pads. no need to turn on NumLock first
  • * Powerful Loan Calculator with printable Amortization Schedule, multiple compounding options, and unlimited Loan Profiles
  • * Area & Volume Calculator in metric or standard with ability to mix all units
  • * Over 80 unit conversions in categories – Temperature, Length, Volume, Weight, Area, Speed, Time, & Data Storage
  • * Stopwatch with lap times displayed on tape
  • Decimal, Binary, Hexadecimal, and Octal number systems (with conversion)
  • Printable and savable colored calculator tape
  • Floating Point, Fixed & Auto Decimal
  • Tax Button
  • Change Button
  • Memory Buttons (Memory Banks stored in .ini file for non-volatile memory)
  • Tool Tips on Buttons
  • Always keep Calc4All on Top of other windows option
  • Automatic Average Calculation in Status Bar
  • Item Count
  • And much more!

* = Registered only




  • Win Windows: XP, Vista, Win7, Win8, Win10, Server 2008, Server 2012

Alternate and previous versions

Online Help Documents

Register/Buy Calc4All

Registering Calc4All gives access to all features.

Registration is just $6.00 per user (on any number of devices).


# of licenses Cost Order Online
Single $6.00 Buy Now
5 Pack $25.00 Buy Now
10 Pack $45.00 Buy Now
Unlimitted $99.00 Buy Now

View EULA for Unlimited user license

New! Don't want to use PayPal? Credit Card payment option is now available for multi-user licenses. Please contact support

All of our apps are completely portable!

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