100% Percent Calculator

The percent calculator that asks you the right question, instead of making you remember the formula. WHAT YOU CAN CALCULATE • Discount: how much off, or the final price after X% off • Sales tax / VAT: add or remove tax from a price • Tips: how much to leave, or what percentage someone tipped you • Profit margin & markup: for shop owners pricing inventory • "What percent is X of Y" and the rest of the basics REAL-LIFE USE CASES At the till deciding if "30% off" is actually a good deal. Adding VAT to a quote for a client. Splitting a restaurant bill after a couple of drinks (we've all been there). Pricing your own products with the right margin. The app is built around "what are you trying to figure out?" — not "here are all the buttons, good luck." CONVERTERS • Length and imperial ↔ metric, built in • Live currency conversion with daily exchange rates (Pro) PRO — ONE-TIME PURCHASE Pro is a single purchase. No subscription, ever. • Calculation history — tap any past result to copy it • Custom default values per calculator (e.g. always pre-fill your usual tax rate) • Live currency converter • Unlimited favorite calculators (free users get one) • Pick your accent color Built and maintained by a one-person indie studio. Buying Pro once keeps the lights on.