Percentage Calculator

Calculate percentages, discounts, tips, tax, and percentage changes instantly. Perfect for shopping, business, finance, and academic use with detailed explanations.

Percentage Calculators

Choose the type of percentage calculation you need

What is X% of Y?

Calculate percentage of a number

Percent (%)

Of Number

Common Examples

Quick Tips

Percentage = (Part ÷ Whole) × 100

Increase: ((New - Old) ÷ Old) × 100

Discount: Original × (Discount% ÷ 100)

Tip: Bill × (Tip% ÷ 100)

Common Uses

Shopping & Finance

• Calculate discounts and sale prices

• Determine tax amounts

• Calculate tips at restaurants

• Investment returns and interest

Business & Analytics

• Market share analysis

• Growth rate calculations

• Profit margin analysis

• Performance metrics

Education & Statistics

• Grade calculations

• Test score analysis

• Survey result percentages

• Statistical analysis

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Frequently Asked Questions

How do I use the "Basic %" calculator?

The Basic % tab calculates "What is X% of Y?". Enter the percentage and the number you want to calculate from. For example: 25% of 200 = 50. This is useful for calculating tips, taxes, or discounts.

What does "Part Of" calculate?

The Part Of tab answers "X is Y% of what number?". Enter a part and its percentage to find the whole. For example: If 50 is 25% of something, the whole number is 200. Useful for reverse calculations.

How does "What %" work?

The What % tab calculates "X is what percent of Y?". Enter two numbers to find what percentage one is of the other. For example: 45 is 30% of 150. Great for analyzing ratios and proportions.

What does the "Change" calculator do?

The Change tab calculates percentage increase or decrease between two values. Enter the original and new values to see the percentage change. For example: from 100 to 150 is a 50% increase.

How do I use the Discount calculator?

The Discount tab calculates sale prices. Enter the original price and discount percentage to see the discount amount, final price, and total savings. Perfect for shopping and sale calculations.

How does the Tip calculator work?

The Tip tab calculates restaurant tips. Enter your bill amount and desired tip percentage to see the tip amount and total bill. Quick tip buttons (15%, 18%, 20%, 25%) are available for convenience.

How accurate are the calculations?

All calculations are performed with full precision and displayed to 2 decimal places for readability. The formulas used are mathematically accurate for all percentage operations.