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DigitBlock

is an option for NumberForm and related functions that specifies the maximum length of blocks of digits between breaks.

Details
Details and Options Details and Options
Examples  
Basic Examples  
Scope  
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DigitBlock

DigitBlock

is an option for NumberForm and related functions that specifies the maximum length of blocks of digits between breaks.

Details

  • The default setting is DigitBlock->Infinity, which specifies that no breaks should be inserted.
  • DigitBlock->n inserts a break every n digits. »
  • DigitBlock->{nleft,nright} inserts a break every nleft digits to the left of the decimal point, and every nright digits to the right of the decimal point. »
  • The setting for NumberSeparator determines what string should be used at each break. »
  • DigitBlock can also be used to specify what to assume for interpretation of numbers with Interpreter["Number",…].

Examples

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Basic Examples  (3)

Separate integer digits in blocks of 3:

Wolfram Language code: NumberForm[30!, DigitBlock -> 3]

Separate real digits in blocks of 2:

Wolfram Language code: NumberForm[N[10 ^ 5E], 15, DigitBlock -> 2]

Use three‐digit blocks on the left of the decimal and two‐digit blocks on the right:

Wolfram Language code: NumberForm[N[10 ^ 5E], 15, DigitBlock -> {3, 2}]

Scope  (5)

Use DigitBlock with PaddedForm:

Wolfram Language code: PaddedForm[N[10 ^ 5E], 15, DigitBlock -> 3]

EngineeringForm:

Wolfram Language code: EngineeringForm[N[10 ^ 5E], 15, DigitBlock -> 3]

ScientificForm:

Wolfram Language code: ScientificForm[N[10 ^ 5E], 15, DigitBlock -> 3]

AccountingForm:

Wolfram Language code: AccountingForm[N[10 ^ 5E], 15, DigitBlock -> 3]

Specify spaces as separators:

Wolfram Language code: NumberForm[N[10 ^ 5E], 15, DigitBlock -> 3, NumberSeparator -> " "]

Use commas as separators on the left and no separators on the right:

Wolfram Language code: NumberForm[N[10 ^ 5E], 15, DigitBlock -> 3, NumberSeparator -> {",", ""}]

Use different block sizes and separators on the left and right:

Wolfram Language code: NumberForm[N[10 ^ 5E], 15, DigitBlock -> {2, 3}, NumberSeparator -> {",", " "}]

A number with three‐digit blocks:

Wolfram Language code: AccountingForm[N[Pi ^ 20], 15, DigitBlock -> 3]

Reverse the roles of periods and commas:

Wolfram Language code: AccountingForm[N[Pi ^ 20], 15, DigitBlock -> 3, NumberSeparator -> {".", " "}, NumberPoint -> ","]
Wolfram Research (1988), DigitBlock, Wolfram Language function, https://reference.wolfram.com/language/ref/DigitBlock.html (updated 2014).

Text

Wolfram Research (1988), DigitBlock, Wolfram Language function, https://reference.wolfram.com/language/ref/DigitBlock.html (updated 2014).

CMS

Wolfram Language. 1988. "DigitBlock." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2014. https://reference.wolfram.com/language/ref/DigitBlock.html.

APA

Wolfram Language. (1988). DigitBlock. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/DigitBlock.html

BibTeX

@misc{reference.wolfram_2026_digitblock, author="Wolfram Research", title="{DigitBlock}", year="2014", howpublished="\url{https://reference.wolfram.com/language/ref/DigitBlock.html}", note=[Accessed: 08-October-2026]}

BibLaTeX

@online{reference.wolfram_2026_digitblock, organization={Wolfram Research}, title={DigitBlock}, year={2014}, url={https://reference.wolfram.com/language/ref/DigitBlock.html}, note=[Accessed: 08-October-2026]}