Calculators

Easily solved 7 percentage calculations to find number. Including What is percent of Y, Percent of what is X, plus/minus percent and etc.

Easily solved 9 percentage calculations. Including Percentage Difference, Percentage Change, Percentage Error and etc.

Find two prime numbers by a given product. For example, the product of two prime numbers is 156, what are the two prime numbers?

Find three prime numbers by a given sum. For example, what are two prime numbers whose sum is 235?

Find two prime numbers by a given sum. For example, what are two prime numbers whose sum is 99?

Calculate the sum and Nth term of the Fibonacci sequence or check if a given number is a Fibonacci number. For example, what is the 500th Fibonacci number?

Calculate the average between two given numbers. For example, the average between 10 and 20.

Calculate the sum of squares and square of the sum between two numbers. For example, the sum of squares between and the square of the sum between 10 and 20.

Calculate the sum and difference of two squares. For example, what are the sum and difference of squares of 10 and 50?

Find consecutive multiples by a given sum of squares. For example, the sum of squares of two consecutive multiples of 7 is 1225, what are the consecutive multiples?

Find two consecutive multiples by their product. For example, the product of two consecutive multiples of 5 is 1050, what are the two consecutive multiples?

Find consecutive multiples by their sum. For example, the sum of 3 consecutive multiples of 8 is 888, what are the multiples?

Calculate what number should be added from one number to another number. calculate what number should be added from one number to another number.

Used to calculate what must be subtracted from one number to get another number. For example, what must be subtracted from 1545 to get 537?

Free online tool used to calculate how many times a given number can be added from another so that equal to the sum. For example, How many times add 5 to 100 so that the sum is 150?