Percentage Calculator

Fast percentage calculator with percent change, discounts, tax, tips, history, themes, and copy buttons.

Percentage Calculator is a fast, clean, and easy-to-use Chrome extension for everyday percentage calculations. It helps you calculate percentages directly from your browser toolbar without opening a separate website or searching for formulas. The extension is designed for students, shoppers, freelancers, business owners, finance users, and anyone who needs quick percentage results. Key features: • Calculate what X% of Y is • Find what percent one number is of another • Calculate percentage increase or decrease • Discount calculator for sale prices • Tax and VAT calculator • Tip split calculator • Copy results to clipboard • Calculation history • Dark and light themes • Simple and modern interface • Works offline • No tracking and no external API calls Why install it? Percentage Calculator saves time by putting the most common percentage tools in one simple popup. Whether you are checking a discount, comparing prices, calculating tax, splitting a bill, or measuring a percentage change, the answer is available in seconds. The extension is lightweight, private, and focused on one purpose: helping you calculate percentages quickly and accurately.