Digital Root Calculator

A digital root calculator is a tool that calculates the digital root of a positive integer. The digital root is the single-digit number obtained by repeatedly summing the digits of a number until a single-digit result is obtained.

For example,
The digital root of 1234 is 1+2+3+4 = 10, and then 1+0 = 1, so the digital root is 1.

A digital root calculator makes it easy to find the digital root of any number quickly and accurately.

The digital root has many interesting properties and applications, such as in number theory, cryptography, and numerology. A digital root calculator can be useful in various fields where digital roots are used, such as in checking the validity of credit card numbers or in analyzing numerology of names or birth dates.