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.