Cento: Percentage Calc

All 4 percentage calculators, free and unlimited. No ads, no tracking: everything stays on your device. Discounts, tips, VAT, growth — instant results.

Cento works out any percentage in two seconds. No clutter, no annoying ads: you type, the answer appears.

FOUR CALCULATORS, ONE APP — ALL FREE • Simple percent — what's 15% of 1,200? • Increase — salary, tips, VAT in one move • Decrease — the real price after a discount or sale • Change — what percentage between two amounts?

BUILT FOR EVERYDAY LIFE Shopping and sales, restaurant tips, a pay rise, VAT, how an investment performed… Cento covers everyday percentages.

FAST AND CLEAR • Instant result as you type • Shortcuts (5%, 10%, 20%…) to go even faster • Plain-language explanation under each result • Copy or share in one tap

HISTORY Find your calculations, rerun them, tag them. Everything stays on your device.

FREE, NO TRICKS All four calculators are free and unlimited. No ads, no trackers, no account. Pro (one-time purchase, lifetime) simply adds unlimited history and export.

PRIVACY No data sent, no account. Your calculations stay with you.