Percentage Calculator Online: 6-in-1 Tool for Discounts, Sales Tax, Markup & Change

Easily solve all percentage math in one clean interface: calculate discounts, price after sales tax, profit markups, percentage increase/decrease, and fraction conversions.

🧭 6 Built-in Percentage Calculation Modes

1. What is X% of Y: Find the exact value of a given percentage.
2. X is what % of Y: Calculate the percentage proportion between two numbers.
3. Percentage Increase / Decrease: Measure percentage change and growth rates.
4. Add Percentage: Calculate total price with sales tax, VAT, or profit markup.
5. Subtract Percentage: Find sale prices after discount and exact money saved.
6. Fraction to Percentage: Convert any numerator/denominator fraction into a clean %.

⭐ Key benefits of the Percentage Calculator

• Instant real-time calculation as you type with zero delay.
• Clear breakdown showing net savings on discounts and exact changes.
• Clean, responsive card layout designed for mobile and desktop screens.
• High decimal precision for accurate financial and academic calculations.

🎯 Everyday use cases

• Shopping calculations: check final prices during Black Friday and seasonal sales.
• Business pricing: configure profit margins, tax rates, and client discounts.
• Academic and statistical homework assistance.

❓ Frequently Asked Questions

How is percentage change calculated?

Formula: ((New Value - Old Value) / Old Value) * 100. Positive values indicate an increase, negative indicate a decrease.

Does it work offline?

Yes, once loaded, the entire calculator runs client-side in your browser.

٪ Calculate Percentages Now ⚡

🔒 Complete Privacy: all calculations and image processing happen locally in your browser without uploading files or sending data to servers — Adawati: 34 free web tools for images, video, and business.