✨ Free & Instant

Percentage Calculator Made Simple

Calculate percentages in three ways — instantly & accurately. Perfect for discounts, taxes, tips, grades, profit margins, and more.

🔍 Find a percentage of a number

of
=
Result
30
20% of 150 is 30
💡 Quick tip: To find 10% of any number, just move the decimal one place to the left. For 150, that's 15. Then multiply: 20% = 2 × 10% = 2 × 15 = 30.

See Percentages in Action

Click any card to load the numbers into the calculator above and see how it works.

🛍️

Shopping Discount

A $80 item with a 25% discount saves you money instantly.

25% of 80 = $20 off
🧾

Sales Tax

8% tax on a $250 purchase — know exactly what you'll pay.

8% of 250 = $20 tax
🍽️

Restaurant Tip

A 15% tip on a $60 meal is standard in many countries.

15% of 60 = $9 tip
📈

Profit Margin

Revenue grew from $5,000 to $6,500 — what's the growth?

+30% increase
📝

Test Score

Scored 42 out of 60 on a test — what's the percentage?

42 is 70% of 60
🏦

Savings Goal

Saved $3,000 toward a $12,000 goal — how close are you?

3,000 is 25% of 12,000

Where Percentages Matter Every Day

From finance to fitness, percentages are everywhere. Here are some of the most common scenarios.

Got Questions? We've Got Answers

Multiply the number by the percentage and then divide by 100. For example, to find 20% of 150: (20 × 150) ÷ 100 = 30. Our calculator does this instantly — just enter your numbers in the first tab.
The formula is: ((New Value − Original Value) ÷ |Original Value|) × 100. If the result is positive, it's an increase; if negative, it's a decrease. For instance, going from 100 to 125 is a 25% increase.
Absolutely! This calculator is 100% free with no sign-ups, no ads that interfere, and no limits on usage. Use it as many times as you need, anytime.
Yes! The website is fully responsive and works beautifully on smartphones, tablets, and desktops. The interface adapts to your screen size for a seamless experience.
The calculator uses standard JavaScript floating-point arithmetic and displays results with appropriate precision. For most everyday use cases (shopping, taxes, grades), the accuracy is more than sufficient.