Percentage Calculator

Fast, Accurate Percentage Calculator for Everyday Math, Finance, and Shopping

Handle percentage changes, sales tax, discounts, and reverse calculations with an intuitive interface designed for quick daily use. This lightweight tool delivers precision up to 20 decimal places and supports customizable formatting, making it ideal for budgeting, retail math, and quick financial checks.

Perfect for students, shoppers, and professionals, the app offers flexible inputs, color customization, and global-friendly number formatting. Whether you're calculating forward or reverse percentages, planning expenses, or analyzing price differences, this calculator keeps everything fast, clean, and reliable.

• Calculate both forward and reverse percentage values with ease.
• Supports practical tasks like computing sales tax from original or final price.
• Customizable interface colors and user-defined decimal markers (point or comma).
• Optional thousands separator (space or comma/point) with precision up to 20 decimals.
• Includes an ad-free version for distraction-free financial and shopping calculations.