With this web page you can check number of iterations
required to reach Kaprekar constant.

Kaprekar's constant is the number 6174, which is the result of a mathematical algorithm that involves
repeatedly subtracting the smallest number from the largest number that can be made from a set of digits.
The algorithm is named after the Indian mathematician D. R. Kaprekar who discovered it in 1949.

Enter a 4 digit number and click on submit.