Percentage Reverse Calculator

Find the original/base number from a known percentage and resulting value. Updates as you type.

Result will appear here: e.g., 2000 is 1% of 200,000

About this tool

This calculator helps you determine the original or base value when you know a percentage and its resulting amount. Example: 2000 is 1% of what number? The answer is 200,000.

How it works

If Value is P% of Base, then Base = Value × 100 ÷ P.

How to use

    - Enter the Percentage (%). Example: 1 - Enter the resulting Value. Example: 2000 - The result updates automatically as you type.

Input and output sample

Percentage: 1 Value: 2000 Output: 2000 is 1% of 200,000