All calculators
111 percentage tools across 17 categories.
∑ Basic Calculators
11 calculators
What is X% of Y?
Instantly calculate what percent of a number is. Enter X and Y to find X% of Y with formula, steps, and examples.
X is What Percent of Y?
Find what percentage one number is of another. Calculate “25 is what percent of 200?” with live steps and formula.
X is Y% of What?
Find the whole when you know a part and its percentage. Solve “25 is 20% of what?” instantly.
Percentage to Decimal
Convert any percentage to a decimal instantly. Example: 75% = 0.75.
Decimal to Percentage
Convert decimals to percentages. Example: 0.125 = 12.5%.
Fraction to Percentage
Convert fractions to percentages. Example: 3/8 = 37.5%.
Percentage to Fraction
Convert percentages to simplified fractions. Example: 45% = 9/20.
Ratio to Percentage
Convert a ratio to a percentage. Example: 3:5 = 60%.
Percentage to Ratio
Convert a percentage to a simplified ratio. Example: 40% = 2:5.
A is What Percent More/Less Than B?
Find how much percent more or less one number is than another. Example: 120 is 20% more than 100.
Percentage of a Percentage
Calculate one percentage of another. Example: 20% of 50% = 10%. Shows the result as a percentage and a decimal.
Δ Percentage Change
7 calculators
Percentage Increase
Calculate percentage increase between two numbers. Example: 100 to 130 is a 30% increase.
Percentage Decrease
Calculate percentage decrease between two numbers. Example: 200 to 160 is a 20% decrease.
Percentage Change
Calculate percentage change between any two values. Positive means increase, negative means decrease.
Percentage Difference
Calculate the percentage difference between two numbers using their average as the base.
Percentage Error
Calculate percentage error between an actual and expected (theoretical) value.
Relative Change
Calculate relative change as a decimal ratio and percentage.
Absolute Change
Calculate the absolute (raw) change between two values, plus optional percentage context.
± Increase & Decrease
6 calculators
Increase by Percentage
Increase any number by a percentage. Example: increase 500 by 18% = 590.
Decrease by Percentage
Decrease any number by a percentage. Example: decrease 500 by 20% = 400.
Successive Percentage Increase
Apply two successive percentage increases. Example: 100 increased by 10% then 15%.
Successive Discounts
Apply up to three successive discounts. Example: 1000 with 20%, 10%, and 5% off.
Compound Percentage Increase
Calculate compound percentage growth over multiple periods.
Compound Percentage Decrease
Calculate compound percentage decline over multiple periods.
↺ Reverse Percentage
6 calculators
Reverse Percentage
Find the original amount before a percentage was applied. Work backwards from a final value.
Reverse Discount
Find the original price when you know the sale price and discount percentage.
Reverse Markup
Find the cost price when you know the selling price and markup percentage.
Reverse Tax
Extract the pre-tax amount from a tax-inclusive price.
Original Price After Discount
Find the original price when the final discounted price and discount % are known.
Old Salary After Increment
Find the previous salary when you know the new salary and increment percentage.
🎓 Marks & Grades
9 calculators
Marks Percentage
Calculate exam marks percentage from obtained and total marks.
CGPA to Percentage
Convert CGPA to percentage using CBSE, engineering, or custom multipliers.
Attendance Percentage
Calculate attendance percentage from classes attended and total classes.
Required Marks
Find how many marks you need on the next exam to reach a target overall percentage.
Pass Percentage
Check if your marks meet a pass percentage threshold.
Semester Percentage
Calculate overall semester percentage from total obtained and maximum marks.
Average Percentage
Calculate the average of up to four percentage scores.
Weighted Percentage
Calculate a weighted percentage from up to three components.
Grade Calculator
Convert a percentage score to a letter grade using a standard scale.
🛒 Shopping
11 calculators
Discount Calculator
Calculate final price and savings from an original price and discount percentage.
Tip Calculator
Calculate tip amount, total bill, and per-person share from bill amount, tip percentage, and optional party size.
Tax After Discount
Apply a discount first, then add tax to get the final checkout price.
Coupon Calculator
Apply a percentage coupon or fixed-amount coupon to a cart total.
Cashback Calculator
Calculate cashback amount and effective price after cashback.
Profit After Discount
Calculate profit when selling at a discounted price.
Price Increase Calculator
Calculate a new price after a percentage increase.
Price Drop Calculator
Calculate how much a price has dropped in amount and percentage.
Multiple Discounts
Stack two percentage discounts and see the effective total discount.
BOGO Savings
Calculate savings on Buy One Get One (BOGO) free or percent-off deals.
Buy 2 Get 1 Free
Calculate cost and savings for Buy 2 Get 1 Free offers.
💼 Business
10 calculators
Profit Percentage
Calculate profit percentage from cost and selling price.
Loss Percentage
Calculate loss percentage from cost and selling price.
Gross Margin
Calculate gross margin percentage from revenue and cost of goods.
Markup Percentage
Calculate markup percentage or selling price from cost and markup.
Commission Percentage
Calculate commission amount from sales and commission rate.
Sales Growth Percentage
Calculate sales growth percentage between two periods.
Revenue Increase Percentage
Calculate revenue increase percentage from old to new revenue.
Target Achievement Percentage
Calculate what percent of a sales or performance target was achieved.
Employee Increment Percentage
Calculate new salary after an increment percentage.
Bonus Percentage
Calculate bonus amount from salary and bonus percentage.
📈 Finance
9 calculators
Simple Interest Percentage
Calculate simple interest and total amount from principal, rate, and time.
Loan Down Payment Percentage
Calculate down payment amount or percentage for a purchase price.
ROI Percentage
Calculate return on investment percentage from gain and cost.
Investment Gain Percentage
Calculate percentage gain on an investment.
Inflation Percentage
Calculate inflation rate between two price levels.
Salary Hike Percentage
Calculate salary hike percentage or new salary after a raise.
EMI Interest Percentage
Estimate total interest as a percentage of a loan principal for EMI loans.
Tax Percentage
Calculate tax amount from a base amount and tax rate.
Capital Gain Percentage
Calculate capital gain percentage from purchase and sale prices.
🧾 GST / VAT
4 calculators
GST Calculator
Calculate GST amount and price with or without GST for any rate (5%, 12%, 18%, 28%).
Reverse GST / GST Inclusive
Extract net amount and GST from a GST-inclusive price.
VAT Calculator
Calculate VAT amount and gross price for any VAT rate.
Reverse VAT / VAT Inclusive
Find the net amount and VAT from a VAT-inclusive price.
📊 Statistics
6 calculators
Percentage Distribution
Calculate what percentage each part is of a total (up to 3 parts).
Weighted Average
Calculate a weighted average of up to three values.
Population Growth Percentage
Calculate population growth percentage between two counts.
Survey Result Percentage
Calculate the percentage of respondents who chose an option.
Sample Percentage
Calculate what percentage a sample is of a population.
Probability Percentage
Convert a probability (0–1 or favorable/total) to a percentage.
❤️ Health
7 calculators
Body Fat Percentage (Estimate)
Estimate body fat percentage using the US Navy circumference method.
Water Intake Percentage
Track how much of your daily water goal you have consumed.
BMI Calculator
Calculate Body Mass Index from height and weight (related health metric).
Macro Percentage
Calculate calorie percentage from protein, carbs, and fat grams.
Daily Calorie Split
Split daily calories into protein, carbs, and fat by percentage.
Weight Loss Percentage
Calculate percentage of body weight lost.
Weight Gain Percentage
Calculate percentage of body weight gained.
🗳️ Election & Polls
3 calculators
⚽ Sports
5 calculators
Win Percentage
Calculate win percentage from wins and total games.
Strike Rate Percentage
Calculate batting strike rate: runs per 100 balls.
Possession Percentage
Calculate ball possession percentage.
Success Rate
Calculate success rate from successful attempts and total attempts.
Completion Percentage
Calculate pass or task completion percentage.
🏗️ Construction
3 calculators
🏭 Manufacturing
5 calculators
Yield Percentage
Calculate manufacturing yield percentage.
Efficiency Percentage
Calculate efficiency as actual output over standard output.
Defect Percentage
Calculate defect rate percentage in production.
Scrap Percentage
Calculate scrap percentage from scrap quantity and total.
Machine Utilization Percentage
Calculate machine utilization percentage.
📣 SEO & Marketing
5 calculators
CTR Percentage
Calculate click-through rate from clicks and impressions.
Conversion Rate Percentage
Calculate conversion rate from conversions and visitors.
Bounce Rate Percentage
Calculate bounce rate from single-page sessions and total sessions.
Growth Percentage
Calculate growth percentage for any marketing metric.
Email Open Rate
Calculate email open rate percentage.
📱 Social Media
4 calculators