Regular Expressions 101

Non-Capturing Group(?:^(?:(\d+)')?(?:[-| ]*)(?:(\d*(?: ?\d+\/\d+)?|(?:\d*\.\d+)?)?")?$)

^start of line

Non-Capturing Group(?:(\d+)')?

?repeats the group contents below at most once:

Group 1(\d+)

\d+a digit, repeated at least once

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Non-Capturing Group(?:[-| ]*)

Character Class[-| ]*

*matches any number of characters from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Non-Capturing Group(?:(\d*(?: ?\d+\/\d+)?|(?:\d*\.\d+)?)?")?

?repeats the group contents below at most once:

Group 2(\d*(?: ?\d+\/\d+)?|(?:\d*\.\d+)?)?

?repeats the group contents below at most once:

1st Alternative\d*(?: ?\d+\/\d+)?

\d*a digit, repeated any number of times

Non-Capturing Group(?: ?\d+\/\d+)?

?repeats the group contents below at most once:

?optionally matches the literal (32₁₀ / 40₈ / 20₁₆)

\d+a digit, repeated at least once

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\d+a digit, repeated at least once

2nd Alternative(?:\d*\.\d+)?

Non-Capturing Group(?:\d*\.\d+)?

?repeats the group contents below at most once:

\d*a digit, repeated any number of times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

"the literal " (34₁₀ / 42₈ / 22₁₆)

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

(?:^(?:(\d+)')?(?:[-| ]*)(?:(\d*(?: ?\d+\/\d+)?|(?:\d*\.\d+)?)?")?$)

New

5'-2 1/2"
5' -2 1/2"
5' 4 2/3"
5'-4"
5'3 1/4"
4"
1/8"
5'-3.25"
5' 3.25"
5'3.25"
3.25"
.25"
345'-12.318"