Percentage Increase Calculator

See what a value becomes after a rise

increased byis?

How it works

Apply a percentage increase to a value and see the new total. This is the calculation behind pay rises, rent reviews, price increases and adding interest to a base amount.

New value = value × (1 + percentage ÷ 100)

Example: rent of $1,500 with an 8% rise becomes 1500 × 1.08 = $1,620, an increase of $120.

Step-by-Step:

  1. Convert percentage to decimal: 8% ÷ 100 = 0.08
  2. Add 1 to get the multiplier: 1 + 0.08 = 1.08
  3. Multiply original by the multiplier: 1500 × 1.08 = 1620

To increase 1500 by 8%, we multiply by (1 + 8/100). This gives us 1620, which is 1500 plus 8% more.

Frequently asked questions

How do you calculate a 10% increase?

Multiply by 1.10. A $3,000 salary with a 10% rise becomes 3000 × 1.10 = $3,300.

Do two 10% increases add up to 20%?

No. Increases compound: 100 with two 10% rises becomes 100 × 1.10 × 1.10 = 121, which is 21% overall, not 20%.

How do I find the value before the increase?

Use the original value calculator: it takes the final value and the percentage applied and returns what the value was beforehand.