Reverse Percentage Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter the final value and the increase applied.
- Press Calculate.
How it works
Finds the original value before a percentage rise: original = final ÷ (1 + percent ÷ 100).
Worked example
$230 after a 15% rise. = $200 original.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.