Percentage Calculator
Instantly calculate percentage equations, discounts, tax margins, and growth rates without struggling with math formulas.
What is X% of Y?
Find a specific percentage of a number.
X is what percent of Y?
Find out what percentage one number is of another.
Percentage Change
Calculate the percentage increase or decrease from X to Y.
Add / Subtract Percentage
Add or subtract a percentage from a specific value.
How to Use the Percentage Calculator
Our free percentage calculator handles the most common percentage equations you encounter in daily life, finance, and business. No more struggling with math formulas—just enter your numbers and get instant, accurate results.
1. What is X% of Y?
Use this to find a specific portion of a total. For example, if you want to calculate a 20% tip on a $150 restaurant bill, simply enter 20 and 150. The calculator will instantly tell you the tip amount is $30.
2. X is what percent of Y?
This calculation helps you find the percentage ratio between two numbers. For instance, if you scored 30 out of 150 on a test, entering those numbers will reveal you scored 20%. It's perfect for grading, performance reviews, or analyzing data.
3. Percentage Increase or Decrease
Tracking growth or decline? Enter the starting value and the final value to see the exact percentage change. This is essential for calculating business growth, stock market changes, or weight loss progress over time.
4. Add or Subtract a Percentage
When you need to apply sales tax or calculate a discount, this is the tool you need. Enter the base price (Y) and the tax/discount percentage (X%). The calculator gives you both the final price with the added percentage and the discounted price instantly.