Everyday & Maths Calculators
Small calculations come up all day — a discount, a percentage change, an exact age. These tools give you a fast, accurate answer without a spreadsheet.
Percentage Calculator
Find a percentage of any number, and see the value after increasing or decreasing it by that percentage.
Open the tool % changePercentage Change Calculator
Calculate the percentage increase or decrease between two values, with the absolute difference.
Open the tool DiscountDiscount Calculator
Work out the final price after a discount and exactly how much money you save.
Open the tool AgeAge Calculator
Find your exact age in years, months and days, plus your total days lived and next birthday.
Open the tool DatesDate Difference Calculator
Calculate the number of days, weeks, months and years between any two dates.
Open the tool AverageAverage Calculator
Find the mean of any list of numbers, along with the total and count, in one click.
Open the tool CGPACGPA to Percentage Calculator
Convert a 10-point CGPA to a percentage and a 4-point GPA using the standard conversion factor.
Open the tool TipTip Calculator
Calculate the tip, total bill and per-person share when splitting a restaurant bill.
Open the tool