Online calculators
Calculate percentages, increases, discounts, VAT, averages, medians, rule of three and other everyday calculations.
Percentage calculator
Calculate X% of any number.
Percentage increase calculator
Calculate the percentage increase from a starting value to a higher final value.
Percentage decrease calculator
Calculate the percentage decrease from a starting value to a lower final value.
Percentage change calculator
Calculate percentage change between a starting value and a final value, whether it increases or decreases.
What percentage is one number of another?
Calculate what percentage one value represents of another total value.
Find the Whole From a Percentage
Find the total when you know an amount and the percentage it represents.
Percentage difference calculator
Calculate the percentage difference between two values.
Increase a number by a percentage
Increase a number by a chosen percentage.
Decrease a number by a percentage
Decrease a number by a chosen percentage.
Discount calculator
Calculate the final price after a discount.
Add VAT to a price
Add any VAT rate to a price.
Remove VAT from a price
Calculate the net price from a VAT-inclusive total.
Rule of three calculator
Solve a direct rule of three: A is to B as C is to X.
Average calculator
Calculate the average of a list of numbers.
Median calculator
Calculate the median of a list of numbers.
Round a number
Round a number to the decimal places you choose.
Square root calculator
Calculate the square root of a positive number.
Original Price Before Discount Calculator
Find the original price before a discount when you know the sale price and the discount percentage.
Discount Needed to Reach a Target Price
Enter the original price and your target price to calculate the discount percentage required to reach it.
Ratio Calculator Between Two Numbers
Calculate and simplify the ratio between two numbers. For example, 1920 and 1080 simplify to 16:9.
Split an Amount Between People
Divide a total amount by the number of people to see how much each person should pay or receive.
Split an Amount by Ratio
Split a total amount using a ratio such as 60:40, 70:30 or any two-part proportion.
Simplify a ratio
Simplify a ratio. A free, quick utility for this task with no sign-up and an instant result.
Margin and markup calculator
Margin and markup calculator. A free, quick utility for this task with no sign-up and an instant result.