Examples: 100 + 20% = 120 · 100 − 20% = 80
Percentage Calculator
Calculate a percentage increase or discount from an initial value. Runs 100% locally in your browser.
How to calculate a percentage increase or discount
Use this percentage calculator to compute a final value after applying an increase or a discount. It also shows the absolute change (the amount added or subtracted). Everything runs locally in your browser for faster results and better privacy.
Common uses include sales discounts, VAT estimation, price increases, tips, and budget adjustments. Enter your initial value, the percentage, pick “Increase” or “Discount”, then calculate.