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Percentage Calculator

Calculate percentages fast for tips, discounts, taxes, and general percentage math with formula breakdowns.

Use case

Whole

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Percent

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Part

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Total

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This online percentage calculator helps you solve common percent problems in seconds. Enter any two values (whole, percent, part) and the third value is calculated automatically. You can also use dedicated tip, discount, and tax modes for real-world shopping, billing, and pricing scenarios.

Every result includes the exact formula and step-by-step explanation so you can verify the math quickly. Use the share URL, copy, and export actions to save or send your calculations.

How to use

  1. 1. Choose calculation mode: generic, tip, discount, or tax.
  2. 2. Enter any two of the three fields.
  3. 3. Click Calculate to compute the missing value.
  4. 4. Review formula, steps, and final total instantly.