How to use the Percentage Increase Calculator
- Enter the starting value, such as your current salary or a price.
- Enter the percentage to add.
- Read the new value and the amount added.
What does this tool do?
This calculator answers questions like “what is $48,000 after a 4% raise?” or “what does a $250 item cost after a 12% price increase?”. It multiplies your number by (1 + percentage ÷ 100).
If you already know the old and new values and want the percentage, use the Percentage Change Calculator instead.
Why use it?
- Gets the final number in one step instead of two.
- Shows the multiplier so you can reuse it in a spreadsheet.
- Works with decimals, such as a 2.5% raise.
Example: a pay rise
A salary of $48,000 rises by 4%. The increase is 48,000 × 0.04 = $1,920, so the new salary is $49,920. The multiplier is 1.04.
The formula
Privacy
The calculation happens instantly in your browser. The numbers you enter are not sent to our servers or saved. There's no account to create and nothing to install.
Frequently asked questions
If prices rise 10% and then another 10%, is that 20%?
No, it's 21%. The second rise is applied to the already-higher price: 1.10 × 1.10 = 1.21.
How do I reverse a percentage increase?
Divide by the multiplier, don't subtract the percentage. A price of $110 after a 10% rise was $110 ÷ 1.10 = $100. Taking 10% off $110 gives $99, which is wrong.
Last reviewed by the M2Toolkit team.