Percentage Increase Calculator
Adds a percentage to a number.
Result
- New value
- 280
- Increase
- 30
How to use the percentage increase calculator
- Enter the starting value.
- Enter the increase (%).
- The results update as you type, or press Calculate.
- Read the new value first, then the supporting figures below it.
Formula
New = value × (1 + p/100).
Worked example
For example, with these inputs:
- Starting value: 250
- Increase (%): 12
the calculator returns:
- New value: 280
- Increase: 30
Background
Calculators are best used to check working rather than replace it, especially for exams where method marks count. Work the problem by hand first, then confirm with the calculator.
In everyday life the same maths shows up in discounts, recipe scaling, renovation measurements and comparing prices per unit. Being comfortable with it saves money and avoids costly measuring mistakes.
Frequently asked questions
How does the percentage increase calculator work?
It applies this formula: New = value × (1 + p/100).
Can I use any units?
Yes, as long as every input uses the same unit. The answer will be in that unit (squared for areas, cubed for volumes).