Percentage Increase Calculator
Calculate percentage increase with reusable inputs and a clear result. This free calculator runs locally, keeps inputs in page memory and does not send entered amounts to analytics.
🔒 100% private — files never leave your browser
Result
- Increase amount
- 15
- New value
- 115
Values stay in this page memory. Copy the result before leaving or refreshing.
Formula
starting value × (1 + increase percentage ÷ 100)
Worked example
100 increased by 15% = 115.
How to interpret the result
Calculate percentage increase with reusable inputs and a clear result. This free calculator runs locally, keeps inputs in page memory and does not send entered amounts to analytics.
How to use the Percentage Increase Calculator
- 1 Enter the values for the calculation.
- 2 Review the formula and worked example below the form.
- 3 Copy the result before leaving or refreshing.
Frequently asked questions
What is the percentage increase formula?
starting value × (1 + increase percentage ÷ 100).
Are my entered amounts uploaded?
No. The calculation runs in your browser. New calculations do not write inputs into the address.
Is this financial, tax or medical advice?
No. This is a general arithmetic tool. Verify business decisions and local requirements with qualified sources.