Percentage Calculator
Find X% of Y, percent change, and percentage difference instantly.
Under 15 seconds
Open Calculator11 calculators in this category
Everyday & Math Calculators
Not every useful number is a loan or an investment. Many of the calculations people do most often are small, everyday ones: what 18% of a figure is, how much a sale price really saves, how to split a restaurant bill fairly, or exactly how old someone is on a given date. This category collects CalPaisa's everyday and math tools in one place. The percentage calculator handles five common modes, including increase, decrease and percentage difference. The discount calculator shows the amount saved and the final price, the tip calculator splits a bill and tip between any number of people, and the age calculator works out an exact age with leap years and month lengths handled correctly. Each tool shows the formula it uses, so you can check the working rather than just trust the answer.
Featured everyday & math calculators
Free, instant and mobile-friendly. Pick a tool and start with your own numbers.
Age Calculator
Your exact age in years, months and days as of any date.
Under 15 seconds
Open CalculatorDiscount Calculator
Find the sale price and how much you save.
Under 10 seconds
Open CalculatorTip Calculator
Work out the tip and split the bill.
Under 10 seconds
Open CalculatorFuel Cost Calculator
Fuel needed and trip cost from distance, mileage and price.
Under 15 seconds
Open CalculatorCGPA to Percentage Calculator
Convert CGPA to percentage with an adjustable multiplier.
Under 10 seconds
Open CalculatorSGPA Calculator
Credit-weighted semester GPA from subjects and grade points.
Under 30 seconds
Open CalculatorElectricity Bill Calculator
Estimate a bill from units, price per unit and charges.
Under 15 seconds
Open CalculatorDate Difference Calculator
Exact days, weeks, months and years between two dates.
Under 15 seconds
Open CalculatorNumber to Words Converter
Write a rupee amount in words — lakh, crore and paise.
Under 10 seconds
Open CalculatorCurrency Converter
Convert currencies with an exchange rate you enter.
Under 10 seconds
Open CalculatorAbout everyday & math calculators
What this category covers, who it is for, and where it helps most.
What these calculators do
They apply simple, clearly stated formulas — percentages, price reductions, bill splits and calendar differences — and show the steps alongside the result.
Who should use them
Shoppers comparing sale prices, groups splitting a bill, students checking percentage problems, and anyone who needs an exact age for a form or eligibility check.
Benefits
Quick, accurate answers on any device, with the formula visible so you understand how the figure was reached.
Common use cases
- Work out a percentage of a number or a percentage change
- Check the final price and saving on a discounted item
- Split a bill and tip evenly between friends
- Find an exact age in years, months and days
Popular guides
Short, practical reads that explain the decisions behind these numbers.
5 min read
How to Calculate Discount Percentage: Formula & Examples
Discount amount, final price and discount percentage — three formulas and worked examples.
Read guideFrequently asked questions
Common questions about everyday & math calculators.
Related categories
Explore other areas of your finances.