Calculators
Everyday calculators for percentages, age and more. Clear formulas, worked examples and instant answers.
Percentage Calculator
Four percentage calculators in one: find X% of a number, what percent one number is of another, the…
Age Calculator
Enter your date of birth to see your exact age in years, months and days, how many days you have lived, the…
Proportion Calculator (Rule of Three)
Enter three known values and find the fourth. Works for direct proportion (more → more) and inverse…
Average Calculator
Paste a list of numbers to get the average (mean), median, mode, range, sum and standard deviation, or switch…
Grade Calculator
Enter your grades and their weights to see your current class grade, or find out what you need on the final…
Fraction Calculator
Enter two fractions or mixed numbers, choose +, −, × or ÷ and get the answer simplified, as a mixed number, a…
Ratio Calculator
Find the missing number in a proportion, simplify a ratio of two or three parts, or work out the aspect ratio…
VAT Calculator
Add VAT to a price or take it off, at the UK’s 20% or any other rate. You get the net amount, the VAT and the…
Discount Calculator
Enter a price and a discount to see the sale price and how much you save. Stack an extra percent off, add…
Rounding Calculator
Round a number to thousands, hundreds, tens, a whole number, decimal places or significant figures, using the…
Overtime Calculator
Work out your overtime rate and total pay for the week, at time and a half, double time or any multiplier…
Tip Calculator
Enter the bill, pick a tip percentage and the number of people. You see the tip, the total and what each…
Hourly to Salary Calculator
Turn an hourly wage into a yearly salary, or any pay period into any other, using your own hours and weeks. A…
PEMDAS Calculator
Type a math expression and see it solved in the correct order of operations, one step at a time, with each…
Zodiac Sign Calculator
Pick your birthday to see your Western zodiac (sun) sign with its element, quality and ruling planet, and…