A keyboard-first percentage calculator for all the "wait, what's 23% of 416?" and "what's the percentage change from 80 to 95?" moments that come up constantly in game design — drop rates, XP curves, damage scaling, sale prices, you name it.

It's small, fast, and exactly what it sounds like.

Features

  • Six modes covering every common percentage question:
    • What is X% of Y?
    • What percentage of Y is X?
    • Percentage change from A to B (increase or decrease)
    • Increase a number by a percentage
    • Decrease a number by a percentage
    • Reverse percentage (find the original value given a known percentage result)
  • Live results. Type and the answer updates as you go. No "calculate" button.
  • Keyboard-first. Tab through fields, hit enter to move on. Use it without touching the mouse.
  • Multiple windows. Open more than one if you're juggling several calculations at once.

What you walk away with

  • An answer. Quickly. Without opening a calculator app or doing arithmetic in your head and second-guessing it.

Tiny tool, frequent use. The kind of thing you don't think you need until it's been on your Desktop for a week and you've used it ten times.