Percentage Calculator
Free online tool to calculate percentages
Percentage Increase/Decrease Calculator
Example: (120 − 100) ÷ |100| × 100 = +20%
Percentage of a Number Calculator
Example: 150 × 20 ÷ 100 = 30
What Percent Calculator
Example: 30 ÷ 150 × 100 = 20%
Add or Subtract a Percentage
Example: 100 × (100 + 20) ÷ 100 = 120 · 100 × (100 − 20) ÷ 100 = 80
Original Value Before a Percentage Change
Example: 120 × 100 ÷ (100 + 20) = 100 · 80 × 100 ÷ (100 − 20) = 100
Percentage Difference Calculator
Example: |80 − 120| ÷ ((80 + 120) ÷ 2) × 100 = 40%
Tip Calculator
Example: 60 × 10 ÷ 100 = 6 · 60 + 6 = 66 · 66 ÷ 2 = 33
How to use the Percentage Calculator
All results update automatically as you type. You can use a decimal point or a decimal comma (12.5 or 12,5).
1. Percentage Increase/Decrease
Enter the starting value and the new value. A positive result is an increase and a negative result is a decrease, always measured against the starting value.
2. Percentage of a Number
Enter a percentage and a number to see what that percentage of the number is. For example, 20% of 150 is 30. Useful for discounts, taxes and commissions.
3. What Percent
Enter a part and a whole to see what percentage the part is of the whole. For example, 30 is 20% of 150. Useful for test scores and shares of a budget.
4. Add or Subtract a Percentage
Enter a value and a percentage to see the value after an increase (+) and after a decrease (−), for example a price plus VAT or a price after a discount.
5. Original Value Before a Percentage Change
Enter the value after the change and the percentage. The (+) result is the value before an increase, for example a price without VAT. The (−) result is the value before a decrease, for example the price before a discount.
6. Percentage Difference
Enter two values to compare them when neither is the starting point. The difference is divided by the average of the two values, so the result is the same in both orders.
7. Tip
Enter the bill amount, the tip percentage and the number of people. The calculator shows the tip, the total to pay and the amount per person.
About Percentage Calculator
Percentage Calculator offers a fast and intuitive way to perform your basic percentage calculations. Whether you're calculating discounts, figuring out tips, tracking stock value changes, or analyzing marketing metrics, our tool is here to help.
Perfect for investors, online marketers, and anyone needing to compute percentage increases or decreases, our percentage calculator ensures accurate and reliable results with ease.