Percentage Increase Calculator

Calculate the new value after increasing an original amount by a percentage. Enter the original value and increase percentage to see the final value, the increase amount, and the percent used in the calculation.

How to use this calculator

1. Enter the starting amount in Original value.
2. Enter the percent to add in Increase percentage.
3. Read the New value and the Increase amount.

Use it for markups, raises, growth estimates, budgets, tax additions, or quick what-if planning. If you already know the before and after values, the percentage change calculator finds the percent change instead.

Formula

$new\ value = original\ value \times (1 + increase\ percent \div 100)$

The increase amount is:

$increase = original\ value \times increase\ percent \div 100$

For example, increasing 250 by 12 percent adds 30, giving a new value of 280.

Worked example

Suppose a subscription costs 40 dollars and rises by 15 percent.

$increase = 40 \times 15 \div 100 = 6$

$new\ value = 40 + 6 = 46$

The calculator reports a new value of 46 and an increase amount of 6.

Related percentage tasks

A percentage increase is not the same as a discount. For markdowns, use the percent off calculator. To compare two values without a baseline, use the percentage difference calculator.

Common mistakes

• Adding the percent number directly to the original value.
• Confusing the increase amount with the final value.
• Assuming an equal later decrease returns to the starting value.
• Forgetting fees, taxes, or compounding in real budgets.