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.