Digit Sum & Digital Root Calculator
Math ToolsSum, product and digital root of the digits of a number
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History
All history →Digit Sum & Digital Root Calculator — at a glance
See the digits of a number added up.
98765
Calculate
Digit sum 35
Digital root 8
How to use it — step by step
Any whole number.
1
Add your text
Paste or type your input into the box. The Sample button fills in an example.
2
Press Calculate
The result is made instantly inside your browser.
3
Copy the result
Use the Copy button, or send it to another tool.
Pro tips
Small things that make the result better.
✦The digital root is the sum repeated until one digit is left.
✦A number is divisible by 9 if its digit sum is.
✦Works for numbers with hundreds of digits.
Quick facts
Freeno signup
Privateruns in your browser
Instantresult in a second
No limituse it as often as you like
Frequently Asked Questions
What is a digital root?+
Add the digits, then repeat on the result until a single digit remains.
Can I use big numbers?+
Yes. The number is read as text so there is no size limit.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.
Is this tool really free?+
Yes — completely free, no signup, no watermark and no usage limit.
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