Regular Expressions 101

Pro

Group 1(1\s?)?

?repeats the group contents below at most once:

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

\s?optionally matches any whitespace character

Group 2(\(\d{3}\)\s?|\d{3}[\-|\s]?)

1st Alternative\(\d{3}\)\s?

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\d{3}a digit, repeated exactly 3 times

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

\s?optionally matches any whitespace character

2nd Alternative\d{3}[\-|\s]?

\d{3}a digit, repeated exactly 3 times

Character Class[\-|\s]?

?matches at most one character from the set below:

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

\sany whitespace character

Group 3(\d{3}[\-|\s]?)

\d{3}a digit, repeated exactly 3 times

Character Class[\-|\s]?

?matches at most one character from the set below:

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

\sany whitespace character

Group 4(\d{4})

\d{4}a digit, repeated exactly 4 times

Global pattern flags

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

Detailed match information will be displayed here automatically.

25 tokens

(1\s?)?(\(\d{3}\)\s?|\d{3}[\-|\s]?)(\d{3}[\-|\s]?)(\d{4})

New

555-555-5555
(555)555-5555
(555) 555-5555
555 555 5555
5555555555
1 555 555 5555


(555-555-5555

1(555)555-5555

555-555-5555
(555)555-5555
(555) 555-5555
555 555 5555
5555555555
1 555 555 5555


(555-555-5555

1(555)555-5555