Calculate percentages, increases, decreases, and more with our comprehensive percentage calculator
Calculate what percentage one number is of another
Welcome to ToolSparx Free Percentage Calculator—your ultimate tool for instant, accurate percentage calculations! Whether you need to know what 15 out of 20 as a percentage is, calculate 2/3 as a percent, find 20 percent of 40, convert 5/8 as a percent, or solve any percentage problem, our smart calculator provides instant answers. Perfect for students calculating grades, shoppers figuring discounts, business owners analyzing profits, or anyone needing quick percentage calculations—completely free and easy to use!
A Percentage Calculator is an essential mathematical tool that solves percentage problems instantly. Instead of manually calculating what 17 out of 20 as a percentage equals or figuring out 12/15 percentage by hand, our smart percentage calculator provides immediate, accurate answers. Perfect for grade calculations, discount shopping, business analytics, tip calculations, and everyday percentage problems.
Our Free Percentage Calculator handles all types of percentage calculations—basic percentages (what percent is X of Y), percentage of a number (what is X% of Y), percentage increase and decrease, percentage change, and more. Whether you're wondering what 16 out of 20 as a percentage is or need to calculate 30 out of 40 as a percentage for your grade, we've got you covered.
Our percentage calculator makes math super easy with these powerful features:
Completely free online percentage calculator with no limits. Calculate as many percentages as you need—from simple homework problems to complex business analytics.
Calculate basic percentages, percentage increases, percentage decreases, percentage of numbers, percentage changes, and part of whole calculations. All-in-one comprehensive tool.
Get immediate answers to questions like "what is 11 out of 15 percentage" or "what is 10/13 as a percentage." Fast, reliable, and precise calculations every time.
Start calculating immediately without accounts or registration. Your privacy matters—calculate percentages instantly with no barriers.
Simple, intuitive design makes complex percentage calculations effortless. Perfect for students, professionals, and anyone needing quick math help.
Calculate grades, discounts, tips, profit margins, test scores, sales tax, interest rates, and more. Versatile tool for all percentage needs.
Using our smart percentage calculator is incredibly simple:
Answer: 75%
Calculation: (15 ÷ 20) × 100 = 75%. This is a common grade calculation—scoring 15 out of 20 points equals 75%, typically a C+ grade.
Answer: 80%
Calculation: (16 ÷ 20) × 100 = 80%. Getting 16 out of 20 correct is 80%, usually a B- grade. Great test score!
Answer: 85%
Calculation: (17 ÷ 20) × 100 = 85%. Scoring 17 out of 20 is 85%, typically a solid B grade.
Answer: 80%
Same as 16/20 percentage. Whether written as "16 out of 20" or "16/20," the answer is 80%.
Answer: 66.67%
Calculation: (2 ÷ 3) × 100 = 66.6666...%. Often rounded to 66.67% or 67%. Two-thirds equals approximately 67%.
Answer: 62.5%
Calculation: (5 ÷ 8) × 100 = 62.5%. Five-eighths equals exactly 62.5%.
Answer: 8
Calculation: (20 ÷ 100) × 40 = 8. Twenty percent of 40 equals 8. Useful for calculating tips, discounts, or portions.
Answer: 12
Calculation: (20 ÷ 100) × 60 = 12. Twenty percent of 60 equals 12.
Answer: 80%
Calculation: (12 ÷ 15) × 100 = 80%. Getting 12 out of 15 correct is 80%, a B- grade.
Answer: 73.33%
Calculation: (11 ÷ 15) × 100 = 73.33...%. Approximately 73%, usually a C+ grade.
Answer: 75%
Calculation: (30 ÷ 40) × 100 = 75%. Scoring 30 out of 40 points equals 75%, a C+ grade.
Answer: 76.92%
Calculation: (10 ÷ 13) × 100 = 76.923...%. Approximately 77%, typically a C+ to B- grade.
Calculate test scores and assignment grades instantly. Know what 15 out of 20 as a percentage means for your GPA or report card.
Calculate sale prices and savings. If a $40 item is 20% off, you save $8 (20 percent of 40) and pay $32.
Quickly calculate restaurant tips. 20% tip on $60 bill is $12 (20 percent of 60).
Calculate profit percentages, markup, margin, and ROI for business decisions and financial analysis.
Calculate interest rates, investment returns, savings goals, and budget allocations as percentages of income.
Convert fractions to percentages for data analysis, surveys, polls, and research results presentation.
Adjust ingredient quantities by percentage when scaling recipes up or down.
To find what percentage X is of Y: (X ÷ Y) × 100. Example: What is 16 out of 20 as a percentage? (16 ÷ 20) × 100 = 80%.
To find X% of Y: (X ÷ 100) × Y. Example: What is 20 percent of 40? (20 ÷ 100) × 40 = 8.
Formula: ((New Value - Original Value) ÷ Original Value) × 100. Shows how much a value has grown as a percentage.
Formula: ((Original Value - New Value) ÷ Original Value) × 100. Shows how much a value has decreased as a percentage.
Divide numerator by denominator, multiply by 100. Example: 2/3 as a percent = (2 ÷ 3) × 100 = 66.67%. Or 5/8 as a percent = (5 ÷ 8) × 100 = 62.5%.
Use our calculator to verify manual calculations. Percentages can be tricky—our tool ensures accuracy.
Know whether you need percentage of a number (20 percent of 40 = 8) or what percentage one number is of another (15 out of 20 as a percentage = 75%).
Some percentages result in decimals (2/3 as a percent = 66.67%). Round to appropriate precision for your needs.
Practice with our calculator to improve mental math skills. Common percentages (10%, 25%, 50%, 75%) become easier over time.
Always verify grade calculations. Know exactly what score you need on final exams to achieve target grades.
15 out of 20 as a percentage is 75%. This is calculated by dividing 15 by 20 and multiplying by 100.
2/3 as a percent is 66.67% (or 66⅔%). This is a repeating decimal, commonly rounded to 66.67% or 67%.
20 percent of 40 is 8. Multiply 40 by 0.20 (which is 20%) to get 8.
5/8 as a percent is 62.5% exactly. Five divided by eight times 100 equals 62.5%.
Formula: ((New - Old) ÷ Old) × 100. If value increased from 40 to 50, that's ((50-40) ÷ 40) × 100 = 25% increase.
Yes! Completely free with unlimited calculations. No subscriptions, no hidden costs—just free, instant percentage calculations.
Absolutely! Perfect for checking homework, understanding percentage concepts, and verifying your calculations. Great study tool for math students.
Yes! Calculate profit margins, growth rates, discount percentages, commission rates, and all business-related percentage needs.
- 17 out of 20 (85%) = B grade
- 16 out of 20 (80%) = B- grade
- 15 out of 20 (75%) = C+ grade
- 12 out of 15 (80%) = B- grade
- 11 out of 15 (73%) = C+ grade
- 30 out of 40 (75%) = C+ grade
- 10 out of 13 (77%) = C+ to B- grade
A: 90-100%, B: 80-89%, C: 70-79%, D: 60-69%, F: Below 60%. Use our calculator to know exactly where your score falls.
Item costs $40, discount is 20%. Savings: 20 percent of 40 = $8. Final price: $40 - $8 = $32.
Bill is $60, 20% tip. Calculation: 20 percent of 60 = $12 tip. Total with tip: $72.
Got 16 correct out of 20 questions? 16/20 percentage = 80%, which is a B- grade.
$10,000 in sales, 5% commission rate. Earnings: 5% of $10,000 = $500 commission.
Ready to make math super easy? Whether you need to know what 15 out of 20 as a percentage is for a grade, calculate 2/3 as a percent for a recipe, find 20 percent of 40 for a discount, convert 5/8 as a percent for statistics, or solve any percentage problem—ToolSparx has you covered.
Don't struggle with percentage calculations. Our Free Percentage Calculator provides instant, accurate answers for all your percentage needs. From simple fraction conversions like 12/15 percentage to complex percentage changes—get quick, reliable results.
Join thousands of students, shoppers, professionals, and math learners who trust ToolSparx for percentage calculations. Start using our Smart Percentage Calculator today and make math easy!