Instant calculations! Your math assistant always at hand to calculate percentages easily.
Percentage Calculator
Welcome to the percentage calculator. Here you can perform different percentage-related calculations easily.
1. Calculate the percentage of a number
Result:
0.00
This tool calculates what a specific percentage of a number is.
Example: If you want to know what 20% of 50 is, enter 20 as the percentage and 50 as the number. The result will be 10.
2. Add or subtract a percentage from a number
Result:
0.00
This tool allows you to increase or decrease a number by a given percentage.
Example: If you add 10% to 200, the result is 220.
3. Calculate the percentage between two numbers
Result:
0.00%
This tool helps you determine what percentage one number represents of another.
Example: If 30 is part of 60, then it represents 50%.
4. Find the total from a percentage
Result:
0.00
This tool allows you to calculate the total number when you know a part and the percentage it represents.
Example: If 25 is 50% of a number, the total is 50.
5. Convert fractions to percentages
Result:
0.00%
This tool converts a fraction to a percentage.
Example: 3 divided by 4 is 0.75, which equals 75%.
6. Calculate a percentage from another percentage
Result:
0.00
This tool calculates the value of a percentage based on another known percentage of a value.
Example: If 60% is 10, then 30% is 5.
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Guide to using percentage calculators
Now, it’s time to explain how each of the above percentage calculators works. Including formulas and practical examples to better understand percentage concepts and calculations.
1. Calculate the percentage of a number
This percent calculator helps you find how much a specific percentage of a number represents. It is useful for calculating things like discounts, taxes, tips, and more in daily life.
How does it work? You tell the calculator what percentage of that number you want to find. For example, if you want to know how much 10% of 100 euros is, this online calculator will tell you.
- Formula: To calculate the percentage of a number, we use the following formula: Result = (Percentage × Number) / 100
What is it for? This percentage tool is very useful in many daily situations. For example:
- Discounts: If there is a product with a 25% discount, you can use the calculator to know how much you will save.
- Taxes: You can calculate how much you have to pay in taxes on a purchase or on your salary.
- Tips: If you want to leave a 15% tip at a restaurant, you can use the calculator to know how much you should add to the bill.
- Cooking recipes: If a recipe indicates that you use 50% of an ingredient, the calculator will help you measure the exact amount.
We see that these online percentage calculators are very useful, and also easy to use.
Example 1:
How much is 20% of 50?
- Calculation:
- Multiply the percentage by the number: 20 × 50 = 1,000
- Divide the result by 100: 1,000 / 100 = 10
Answer: 20% of 50 is 10.
Example 2:
How much is 15% of 200?
- Calculation:
- Multiply the percentage by the number: 15 × 200 = 3,000
- Divide the result by 100: 3,000 / 100 = 30
Answer: 15% of 200 is 30.
2. Add or subtract a percentage to a number
This calculator percentage numbers allows you to increase/decrease a number by percentage. It is especially useful for calculating increases (like salary raises) or decreases (like price discounts).
How does it do it? You tell the percentage calculation application what number you want to change (for example, your current salary) and what percentage you want to increase or decrease (for example, a 5% increase). And the online tool does the calculations and tells you the final result.
Formulas:
- To add a percentage: Result = Number + (Number × Percentage / 100)
- To subtract a percentage: Result = Number – (Number × Percentage / 100)
Imagine you have a number. The price of something, an amount of money, etc. The percentage calculation application allows you to do two things with that number:
- Increase it: It’s like adding a little more. For example, if you want to know how much money you will have if your salary is raised, you can use this calculator.
- Decrease it: It’s like taking a little away. For example, if you want to know how much you will pay for a discounted product, you can also use this calculator.
Example 1 (Add):
Increase 100 by 20%.
- Calculation:
- Calculate the increase: 100 × 20 / 100 = 20
- Add the increase to the original number: 100 + 20 = 120
Answer: 100 increased by 20% is 120.
Example 2 (Subtract):
Decrease 80 by 25%.
- Calculation:
- Calculate the reduction: 80 × 25 / 100 = 20
- Subtract the reduction from the original number: 80 – 20 = 60
Answer: 80 decreased by 25% is 60.
3. Calculate the percentage between two numbers
This % calculator helps you determine what percentage a number represents in relation to another. It is useful for understanding proportions, percentage increases or decreases, and comparing quantities.
How does it do it? You tell the percentage application what the two numbers you want to compare are. The percentage calculator does the calculations and tells you the result as a percentage.
- Formula: Percentage = (Part × 100) / Total
For example:
- If there are 20 students in a class and 15 passed, the online calculator will tell you that 75% of the students passed.
- If your salary was 1000 euros and is now 1200 euros, the percentage counter online will tell you that your salary increased by 20%.
Example in calculation 1:
What percentage is 30 of 60?
- Calculation:
- Multiply the part by 100: 30 × 100 = 3,000
- Divide the result by the total: 3,000 / 60 = 50
Answer: 30 is 50% of 60.
Example in calculation 2:
What percentage is 45 of 150?
- Calculation:
- Multiply the part by 100: 45 × 100 = 4,500
- Divide the result by the total: 4,500 / 150 = 30
Answer: 45 is 30% of 150.
4. Find the total from a percentage
This calculator with percentages helps you find the total when you know a part and the percentage it represents. It is used to know the original value before a percentage change.
How does it do it? You tell the tool the part you know (the 20 euros) and the percentage it represents (40%). The online calculator does the necessary calculations and tells you the total number (in this example, it will tell you how much money you had at the beginning).
- Formula: Total = (Part × 100) / Percentage
For example:
- If you have a discount voucher of 15 euros that represents 15% of the original price of a product, the calculation application will tell you what the original price of the product was before the discount.
- If you have saved 500 euros and this represents 25% of your savings goal, the percentage calculator will tell you what your total savings goal is.
5. Convert fractions to percentages
This calculator converts fractions into percentages. It is used to see what part of a total the fraction represents, but expressed as a percentage.
- Formula: Percentage = (Numerator × 100) / Denominator
For example: If you have a pizza divided into 8 equal parts and you eat 2, the percentage calculator will tell you that you ate 25% of the pizza.
What is it for? These mathematical calculations are used for:
- To better understand fractions: Sometimes, it is easier to understand a number if we express it as a percentage. For example, if you are told that you answered 80% of an exam correctly, it is easier to visualize your result than if you are told that you got 4 out of 5 questions right.
- To make comparisons: If you want to compare different fractions, converting them to percentages allows you to see which is greater or lesser more easily.
- To solve problems: Many mathematical problems, especially in topics like statistics or finance, use percentages. Converting a fraction to a percentage helps you solve these problems.
6. Calculate a percentage from another percentage
This percentage counter allows you to determine the value of a percentage from another known percentage of a number. It is useful when you know that a certain percentage corresponds to a specific value and you need to calculate what value corresponds to a different percentage of the same total.
- Formula: Result = (Known value × Percentage to calculate) / Known percentage
For example:
- If you want to know how much 50% of the cake weighs, you just have to enter the data into the calculator.
- Or if you want to know how much a piece that represents 10% of the cake weighs, you can also calculate it easily.
Example of calculation:
If 80% is 40, how much is 50%?
Calculation:
- Multiply the known value by the percentage to calculate:
- 40 × 50 = 2,000
- Divide the result by the known percentage:
- 2,000 / 80 = 25
Answer: If 80% is 40, then 50% is 25.
🟧 Any other questions about the percentage calculation tools you can consult us from the contact section in the footer.
Frequently asked questions about percentage calculation
What is a percentage?
A percentage is a way of expressing a fraction in terms of 100 (percent). For example, 50% means 50 out of 100.
How is the percentage of a number calculated?
To calculate the percentage of a number, multiply the number by the percentage. To find 25% of 80, multiply 80 by 0.25, which results in 20.
How is the total number found from a percentage?
If you know that a certain percentage of a number is X, the total number can be found by dividing X by the percentage and multiplying by 100. For example, if 20% of a number is 50, the total number is 50 / 0.20 = 250.
How is the percentage of increase or decrease calculated?
To calculate the percentage of increase, subtract the original value from the new value, divide the difference by the original value, and multiply by 100. For the percentage of decrease, the process is similar, but subtract the new value from the original.
How are fractions converted to percentages?
To convert a fraction to a percentage, divide the numerator by the denominator and multiply the result by 100. For example, 3/4 as a percentage is (3/4) x 100 = 75%.
How are percentage discounts calculated?
To calculate a percentage discount, multiply the original price by the discount percentage and then subtract from the original price.
How are tips calculated?
To calculate a tip, multiply the total bill by the desired tip percentage, and then add it to the total.
How are percentages used in daily life?
Percentages are applied in many day-to-day situations; calculating discounts on purchases, taxes, interest, tips, statistics, etc.
What is a compound percentage?
A compound percentage is applied repeatedly on a growing base. For example, compound interest is calculated on the original principal plus the accumulated interest.
What is the difference between a percentage and a ratio?
A percentage always expresses an amount in relation to 100, while a ratio compares two quantities. However, both can be used to solve similar problems.
What is the difference between an absolute percentage and a relative percentage?
An absolute percentage represents a part of a whole. For example, if 30% of the students in a class are women, 30% is an absolute percentage. The relative percentage compares two values. For example, if the number of women in a class increased from 25% to 30% in a year, the 5% increase is a relative percentage.
How are percentages calculated in a spreadsheet?
Spreadsheets like Excel have predefined functions to calculate percentages. For example, to calculate 20% of a value in cell A1, you can use the formula “=A1*20%”. You can also use functions like “PERCENTAGE” or “INCREMENT” to practice simple and complex calculations.
