Calculate a percentage increase and see the amount it adds.
Result
230
Formula
200 × (1 + 15 ÷ 100) = 230
A 10% rise
Apply an increase to a value
10Rent going up
From one figure to another
1200A large jump
More than doubling
150Apply a percentage to a value, or work out the percentage between a before and after figure.
The result updates immediately, showing both the new value and how much was added.
The percentage tells you the proportion; the absolute amount tells you what it actually costs.
Applying an increase and measuring one are different calculations, and having both on one page saves reaching for a second tool.
A 3% rise sounds small until you see it is £900 a year. The absolute figure is usually the one that matters.
Calculations run at full precision and round only for display, so repeated increases do not accumulate error.
Work out what a value becomes after a percentage rise, or find the percentage rise between two values. Both directions are supported, because sometimes you know the increase and want the new figure, and sometimes you have the before and after and want to know how much it went up. The absolute increase is shown alongside the percentage — the number that usually matters more in practice.
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