Percentage Calculator
Calculate percentages: what is X% of Y, or X is what percent of Y.
Result
📢 In-Calculator Ad — 468×60
What is this?
The Percentage Calculator is an essential daily utility for deciphering discounts, tax rates, test scores, and statistics. It offers three different calculation modes: finding a specific percentage of a number, determining what percentage one number is relative to another, and calculating the percentage of increase or decrease between two values.
Percentages are heavily ingrained into our daily lives—whether you are trying to calculate the tip at a restaurant, figure out your final price during a clearance sale, or analyze the growth in your investment portfolio. However, the math behind percentages can sometimes be confusing or prone to mental errors, especially when dealing with complex decimal numbers or large fractional changes. This intuitive tool is designed to provide immediate, error-free results for all common percentage-based problems.
In the first mode, "What is X% of Y?", you can easily determine standard proportions, such as calculating a 15% tip on a $45 bill. The second mode, "X is what % of Y?", is perfect for determining grades or determining the ratio of a specific subset to a whole (e.g., if 25 out of 120 cars are red, what percentage are red?). Finally, the "% Change from X to Y" mode is indispensable for financial tracking, allowing you to instantly see the percentage of growth or decline between last year's revenue and this year's revenue.
This free percentage tool supports high-precision decimal inputs to guarantee the utmost accuracy for both academic and professional use cases. Try bookmarking this page for a quick, handy reference anytime you need to crunch the numbers fast.
Percentages are heavily ingrained into our daily lives—whether you are trying to calculate the tip at a restaurant, figure out your final price during a clearance sale, or analyze the growth in your investment portfolio. However, the math behind percentages can sometimes be confusing or prone to mental errors, especially when dealing with complex decimal numbers or large fractional changes. This intuitive tool is designed to provide immediate, error-free results for all common percentage-based problems.
In the first mode, "What is X% of Y?", you can easily determine standard proportions, such as calculating a 15% tip on a $45 bill. The second mode, "X is what % of Y?", is perfect for determining grades or determining the ratio of a specific subset to a whole (e.g., if 25 out of 120 cars are red, what percentage are red?). Finally, the "% Change from X to Y" mode is indispensable for financial tracking, allowing you to instantly see the percentage of growth or decline between last year's revenue and this year's revenue.
This free percentage tool supports high-precision decimal inputs to guarantee the utmost accuracy for both academic and professional use cases. Try bookmarking this page for a quick, handy reference anytime you need to crunch the numbers fast.
Formula
Finding X% of Y: (X / 100) × Y
Finding what % X is of Y: (X / Y) × 100
Percentage Change: ((New Value - Old Value) / |Old Value|) × 100
Finding what % X is of Y: (X / Y) × 100
Percentage Change: ((New Value - Old Value) / |Old Value|) × 100
Frequently Asked Questions
How to calculate percentage?
To find X% of Y, multiply Y by X/100. To find what percent X is of Y, divide X by Y and multiply by 100.