Percentage increase calculator
Pay rise, rent rise, price rise: enter the starting value and the percentage, and see the new amount plus exactly what the rise is worth.
Guide
How to use it
- Enter the starting value: a salary, a rent, a price.
- Enter the percentage increase. A negative number applies a decrease.
- Read the new amount on the tile and, underneath, what the rise adds in real terms.
- Working backwards from two known values instead? Use the percentage change calculator.
Examples
Worked examples
28,500 × 1.045 = 29,782.50. The rise is worth 1,282.50 a year before tax, about 107 a month gross.
950 × 1.07 = 1,016.50 a month, which is 798 more per year. Numbers like that are worth having before a negotiation.
Not 20%. 1.1 × 1.1 = 1.21, a 21% total increase, because the second rise acts on the already-raised amount.
Method
How it works
New value = starting value × (1 + percentage ÷ 100). Working with the multiplier rather than adding a separately-calculated slice is faster and it chains correctly when increases stack. The note under the answer also shows the equivalent decrease, since the two directions are not mirror images.
All arithmetic runs in your browser. Nothing you type is transmitted.
FAQ
Frequently asked questions
How do I add a percentage to a number?
Multiply by one plus the percentage over 100. A 5% rise on 2,400 is 2,400 times 1.05, which is 2,520. One multiplication, no separate adding step.
How much is a 5% pay rise worth?
Multiply your salary by 0.05. On 32,000 that is 1,600 a year before tax, about 133 a month gross. Take-home rises by less once tax and other deductions apply.
How do I apply two increases in a row?
Multiply the factors, do not add the percentages. Two 10% rises are 1.1 times 1.1, a 21% total increase, because the second rise applies to an already larger number.
Does a 10% rise then a 10% cut get me back to the start?
No. 100 up 10% is 110, and 110 down 10% is 99. The cut acts on the bigger number. The tool shows the matching decrease under each answer for exactly this reason.
How is this different from the percentage change calculator?
This page applies a known percentage to a value. The change calculator works backwards from two values to find the percentage between them.
Can I use it for negative numbers or decreases?
Yes. Enter a negative percentage to apply a decrease, and the note under the answer always shows what the same percentage in the other direction would give.
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