Digital Root Calculator: quickly get the digital root of any number

This calculator will work out the digital root from any whole number. The digital root is the iterated sum of all the digits that make up a number. For example, the number 567 would compute as 5+6+7 = 18, 1+8 = 9. So the digital root of 567 is 9. Digital roots are used in numerology.

This calculator will handle very long numbers. For example, you could enter the number 9 one hundred times. The calculator will show you that the number was 100 digits long. 9 x 100 = 900 so you should see 900 in the sum of digits entered box. 9+0+0=9, so you should see 9 in the digital root box.