World's Leading
Windows Calculator

Millions of downloads

Hundreds of awards

Almost every feature imaginable

Wonderfully easy to use

  • Judy's TenKey is the amazing Windows calculator

    that won the Ziff Davis award for Desktop Accessory of the Year, 5-stars on CNET, 5-cows on Tucows, and more (see our awards).

    It automatically recalculates the tape when you make edits, can print, save, and much, much more. It's easy to use, and makes calculations a joy.  Learn more

    Download free eval! (all Windows versions)
  • Judy's Conversions lets you quickly convert a number from one unit to another

    (such as feet to meters, or teaspoons to gallons).  Now supports temperature calculations!
  • Judy's CountDown is a fun date calculator that helps you track important dates.

    Version 3.0 now enables you to create custom icons from your photos, and to share events with your friends.