Percentage Calculator
A free online tool for calculating percentages, converting fractions, and solving various percentage-related problems. Perfect for students, teachers, and professionals.
Explanation
Percentage calculations are used frequently in everyday life. The percentage (%) symbol indicates what portion of a number we want to calculate.
To calculate a percentage, you divide the percentage value by 100 to get a decimal, then multiply this decimal by the original number:
Common Use Cases
Discounts
When a $100 product has a 20% discount, you save $20 and pay $80.
Tips
If you want to leave a 20% tip on a $100 meal, you would leave $20 as the tip.
Taxes
When 20% sales tax is added to a $100 purchase, $20 is added for tax, making the total $120.
Proportions
If 20% of students in a class are boys and there are 100 students total, that means there are 20 boys.
Finance
If you invest $100 and earn 20% annual interest, you'll receive $20 in interest for the year.
Education
If a student answers 20% of questions correctly on a 100-question test, they answered 20 questions correctly.
Business
If 20% of your monthly revenue goes to operating expenses and you earn $100, you spend $20 on operations.
Healthcare
If a hospital reduces infections by 20% from 100 cases monthly, they now have only 80 cases per month.