Free Percentage Calculator
Calculate percentages instantly with this free online percentage calculator.
Use the tool below to calculate what percentage of a number is, what percent one value represents of another, percentage increase or decrease, and how to add or subtract a percentage from a value.
Example: What is 20% of 150?
Example: 30 is what percent of 150?
Example: From 100 to 125 is a 25% increase.
Example: Add 15% to 200 or subtract 15% from 200.
Choose a calculation type and enter your values.
What is a Percentage Calculator?
A percentage calculator is an online tool that helps you calculate percentages quickly and accurately. It can calculate percentage values, percentage change, percentage increase, percentage decrease and percentage-based additions or reductions.
Instead of calculating percentages manually, you can enter your numbers into the calculator and get an instant result.
This percentage calculator runs directly in your browser and processes the calculation locally.
What can you use a Percentage Calculator for?
You can use this percentage calculator for everyday math, shopping, discounts, taxes, price changes, finance, school work, business calculations, reports, comparisons and quick percentage checks.
The tool can calculate what is X percent of Y, what percentage one number is of another, how much a value has increased or decreased, and what the final value is after adding or subtracting a percentage.
How to use the Percentage Calculator
Step 1: Choose the calculation type
Select the percentage calculation you need from the dropdown menu.
You can calculate:
- What is X% of Y?
- X is what percent of Y?
- Percentage increase or decrease
- Add or subtract a percentage
Step 2: Enter your values
Type the numbers you want to calculate. The input fields change depending on the calculation type you choose.
Step 3: Calculate the result
Click the calculate button to get the result instantly. You can also copy the result to your clipboard.
Percentage formulas
What is X% of Y?
To calculate a percentage of a value, divide the percentage by 100 and multiply it by the value.
Formula:
(Percentage / 100) × Value
Example:
20% of 150 = 30
X is what percent of Y?
To find what percentage one value represents of another, divide the part by the total and multiply by 100.
Formula:
(Part / Total) × 100
Example:
30 is 20% of 150
Percentage increase or decrease
To calculate percentage change, subtract the original value from the new value, divide by the original value and multiply by 100.
Formula:
((New Value - Original Value) / Original Value) × 100
Example:
From 100 to 125 = 25% increase
Add or subtract a percentage
To add or subtract a percentage, first calculate the percentage amount and then add or subtract it from the original value.
Example:
Add 15% to 200 = 230
Subtract 15% from 200 = 170
Common use cases
For shopping and discounts
You can calculate sale prices, discount amounts, price reductions and percentage savings.
For taxes and VAT
You can calculate percentage-based taxes, estimate VAT amounts or check price changes before and after tax.
For business and finance
You can calculate growth, percentage change, profit margins, revenue changes and report comparisons.
For school and homework
Students can use the calculator to solve percentage problems and understand common percentage formulas.
For everyday calculations
You can quickly calculate tips, price increases, reductions, comparisons and proportions.
Related tools
Is this Percentage Calculator free?
Yes. This percentage calculator is completely free to use.
Are my numbers stored?
No. Your numbers are processed directly in your browser. They are not uploaded, saved or stored.
Can I calculate what is X percent of Y?
Yes. You can calculate values such as 20% of 150 instantly.
Can I calculate what percentage one number is of another?
Yes. You can calculate questions such as “30 is what percent of 150?”
Can I calculate percentage increase?
Yes. You can calculate how much a value has increased from an original value to a new value.
Can I calculate percentage decrease?
Yes. You can calculate how much a value has decreased between two numbers.
Can I add a percentage to a number?
Yes. You can add any percentage to a value and get the final result.
Can I subtract a percentage from a number?
Yes. You can subtract any percentage from a value and get the reduced result.
Can I copy the result?
Yes. You can copy the percentage calculation result to your clipboard.
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