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Embed the Sum of Digits Calculator

Three quick steps — customize the look, choose how it behaves, then copy the code onto your site.

Calculator

Name

Your reference only — not shown to visitors

Heading

Shown to visitors above the calculator, in every display mode. Leave blank for none.

Subheading

Optional supporting text shown just below the heading.

Theme

Accent / section color

Colors the calculator's own section bars and highlights — the whole calculator's look, not just the results panel.

#FF5C00

Background color

#FFFFFF

Results text color

#0A0C0B

Border radius

12px

Branding

Remove "Powered by Calcupedia"

Powered-by color

#FF5C00

Powered-by background

#FFFFFF

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Number

-999,999,999,999999,999,999,999

Sum of Digits

The total obtained by adding every digit in the number together.

Divisibility Check

Whether the digit sum reveals the number is divisible by 3 or 9. Digit sum is divisible by 3, so the number itself is divisible by 3, but not by 9.

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