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An Intelligent Calculator and Unit Converter.


Download on the Mac App Store

History Tape

History Tape

Every calculation you enter gets saved to the history tape and optionally sent to your clipboard for quick pasting. Refer to calculations later or send them right back to the calculator.

Expression View

Expression View

Calcbot’s original expression view allows you to see everything you have typed so you’ll never forget what you entered or miss a typo.


Convert any of your calculations with over 500 units across 22 different categories including auto-updating currency rates.

And More…


Fave a calculation and get instant access to its result via the Favorites Key. No more cryptic memory keys.

Scientific Functions

Calcbot supports common scientific functions in case you ever need them.


Get instant access to scientific constants like Pi, Atomic Mass or add your own.

Round for Currency

Have all of your results rounded to two decimal places.

iCloud Sync

Sync your history tape, constants, and faves across multiple Macs and soon to all of your iOS devices.

Email Tape

Quickly send your entire history tape contents as an email.

Large Type

View any calculation result from across the room.

Sounds & Animation

Sound effects & animation that provide positive feedback when performing calculations.