PercentTool Logo

What is X Percent of Y?

Use this calculator to instantly find the value of any percent of any number.

📊 What is X% of Y?

of

Welcome to PercentTool.com’s free “What is X Percent of Y?” calculator — designed for fast, accurate answers to everyday percentage questions. Whether you're figuring out a discount, estimating tax, splitting a bill, or working through math homework, this tool is here to make it easy.

Let’s say you’re trying to figure out what 25% of 80 is. You could reach for your phone, open the calculator app, and type in numbers, or — you could just enter 25 and 80 here and click “Calculate.” You’ll instantly get the answer: 20. It’s that simple.

This percentage calculator helps you solve common questions like:

  • What is 10% of my $120 grocery bill?
  • What is 20% of 85 students?
  • What is 15% of a $500 paycheck?
  • What is 8% of my daily step goal of 10,000?

To calculate a percent of any number manually, use this formula:

(X ÷ 100) × Y = result

For example, to find 30% of 150: (30 ÷ 100) × 150 = 45.

That’s the exact math this calculator handles for you — instantly. It eliminates the chance for mistakes, saves you time, and works across all devices without needing to sign in or install anything. Just enter your numbers and go.

Knowing how to find percentages is useful in almost every part of life. When you’re at a store and see “20% off,” it’s helpful to know how much you’ll actually save. If you're tipping 18% at a restaurant, this tool tells you the exact dollar amount. And if you're planning a budget and want to allocate 40% to rent or 5% to savings, this calculator gives you quick numbers you can trust.

Teachers and students love this tool for classwork and homework. Parents use it to help their kids understand basic math. Business owners use it to calculate commissions, profit margins, and taxes. Fitness enthusiasts use it to measure progress by percent. From 5th graders to CFOs, everyone can benefit from knowing how much a percent of something really is.

Here’s a breakdown of other ways this tool is helpful:

  • Sales and Discounts: Easily find how much money you’ll save during sales events.
  • Tips and Gratuities: Quickly calculate 15%, 18%, or 20% of your bill.
  • Budget Planning: Allocate percentages of your income to various categories like rent, savings, groceries, etc.
  • Business Math: Use percent values to measure growth, profit, cost increases, or employee bonuses.
  • Fitness and Goals: Measure percent of daily targets met (e.g., calories, steps, hours).

Plus, it’s accessible anywhere. This percent calculator is mobile-friendly, tablet-ready, and works great on desktops. No pop-ups. No fluff. Just fast answers to your math questions when you need them.

Looking for more tools? PercentTool.com offers several other free calculators that solve different types of percentage problems:

All of our tools are 100% free to use, always available, and designed to be super fast and user-friendly. Whether you’re here for homework, budgeting, saving money, or solving a random math problem, this is the easiest way to get clear answers.

Bookmark this page for easy access later, and be sure to share PercentTool.com with friends, family, and classmates. If it saved you time, it’ll help others too. Thanks for visiting — and happy calculating!

Need the reverse? Try our what percent of X is Y calculator or percent increase calculator for growth problems.