StringLength—Wolfram Documentation
StringLength["string"]
gives the number of characters in a string.
Examples
open all close allScope (4)
Find lengths of all strings in a list:
StringLength treats special characters just like ordinary ones:
Properties & Relations (2)
The empty string has zero length:
StringLength counts the underlying character codes, not selectable characters:
The length is equivalent to the length of the list returned by ToCharacterCode:
It is also equivalent to the length of the list returned by Characters:
Possible Issues (2)
Formatting constructs are included in giving lengths of formatted strings:
StringLength counts every character as length 1, regardless of the length of its full name:
History
Introduced in 1988 (1.0) | Updated in 1996 (3.0) ▪ 2003 (5.0) ▪ 2004 (5.1) ▪ 2020 (12.2)
Text
Wolfram Research (1988), StringLength, Wolfram Language function, https://reference.wolfram.com/language/ref/StringLength.html (updated 2020).
CMS
Wolfram Language. 1988. "StringLength." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2020. https://reference.wolfram.com/language/ref/StringLength.html.
APA
Wolfram Language. (1988). StringLength. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/StringLength.html
BibTeX
@misc{reference.wolfram_2025_stringlength, author="Wolfram Research", title="{StringLength}", year="2020", howpublished="\url{https://reference.wolfram.com/language/ref/StringLength.html}", note=[Accessed: 22-February-2026]}
BibLaTeX
@online{reference.wolfram_2025_stringlength, organization={Wolfram Research}, title={StringLength}, year={2020}, url={https://reference.wolfram.com/language/ref/StringLength.html}, note=[Accessed: 22-February-2026]}