Price Discount & Tip Calculator

A simple caculator that allows you to calculate price reductions and tips with a single click.

This is a free tool available as an offline-enabled web/mobile application, as a Chrome extension, and as a Firefox Add-on.

As a buyer, it works as a sale price calculator to see a final price after you factor in a discount—perhaps from that 20% price off coupon you have (How to Calculate a Percentage).

You can compare the reduced price and the amount of money you save.

In a restaurant? The Calculator calculates tip amounts for common percentages of the service cost. It also gives a total that includes the tip.

Try the Web/Mobile app.

Features:
  • Compact and available when you need it—available as Chrome and Firefox extensions and as a web/offline mobile app.
  • The desktop version lets you use the keyboard number pad for calculations
  • Copy results from the display to the clipboard
  • Enter key for "=" and "c" for clear
  • A set of common discount/tip percentage calculations.
    • Takes your current calculation and rounds it to a price-friendly two decimal places. Displays the amount you would pay with the deduction and how much you save - invaluable!
    • Also, calculates the amount you could tip based on the selected percentage.
Keyboard Shortcuts:
  • Number Pad or 0-9 for Number Entry
  • Equals (= or Enter)
  • Clear ("c")
  • Del or Backspace to delete
  • Divide (/)
  • Times (*)
  • Minus (-)
  • Plus (+)
  • Percent (F1) (for example, 50%20 means 20 percent of 50:)
  • Square Root (F2)
  • +/- (F3)
  • Decimal point (Period)
  • Copy results from the display (Ctrl-c)
  • Close Window (ESC or click in main Chrome tab)

Try the Basic Calculator

It's the same calculator but without the one-click percentage buttons.