Percentage Calculator

Calculate percentages instantly — find what X% of a number is, work out what percent one value is of another, or measure the percent increase or decrease between two numbers. Everything runs in your browser, so there's no waiting and no data sent anywhere.

How to Use Percentage Calculator

1. Select what you want to calculate from the dropdown.
2. Enter your two values.
3. Click Calculate to see the result instantly.

Key Features

• Three calculation modes: percentage of a value, percentage relationship, and percent change
• Instant results as you type, no page reload
• Handles increases and decreases automatically
• Works entirely in your browser — no data leaves your device

Who It's Useful For

• Shoppers checking a discount or markup
• Students working through percentage problems
• Analysts comparing two figures or tracking growth
• Anyone who needs a quick percentage answer without a spreadsheet

Practical Examples

• Find 15% of a $240 bill for a tip
• Work out what percent 45 is of 180
• Calculate the percent increase from a $50 price to $65
• Check a percent decrease from last month's sales to this month's

Tips for Better Results

• Choose the calculation mode that matches your question before entering numbers
• For percent change, the direction (increase or decrease) is calculated automatically
• Use decimals for more precise results

FAQ

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