Regular expression to match standard 10 digit phone number - regex

Question

I want to write a regular expression for a standard US type phone number that supports the following formats:
###-###-####
(###) ###-####
### ### ####
###.###.####
where # means any number. So far I came up with the following expressions
^[1-9]\d{2}-\d{3}-\d{4}
^\(\d{3}\)\s\d{3}-\d{4}
^[1-9]\d{2}\s\d{3}\s\d{4}
^[1-9]\d{2}\.\d{3}\.\d{4}
respectively. I am not quite sure if the last one is correct for the dotted check. I also want to know if there is any way I could write a single expression instead of the 4 different ones that cater to the different formats I mentioned. If so, I am not sure how do I do that. And also how do I modify the expression/expressions so that I can also include a condition to support the area code as optional component. Something like
+1 ### ### ####
where +1 is the area code and it is optional.

Answer 1

^(\+\d{1,2}\s)?\(?\d{3}\)?[\s.-]\d{3}[\s.-]\d{4}$
Matches the following
123-456-7890
[phone]
123 456 7890
123.456.7890
[phone]
If you do not want a match on non-US numbers use
^(\+0?1\s)?\(?\d{3}\)?[\s.-]\d{3}[\s.-]\d{4}$
Update :
As noticed by user Simon Weaver below, if you are also interested in matching on unformatted numbers just make the separator character class optional as [\s.-]?
^(\+\d{1,2}\s?)?\(?\d{3}\)?[\s.-]?\d{3}[\s.-]?\d{4}$
https://regex101.com/r/j48BZs/2

Answer 2

There are many variations possible for this problem. Here is a regular expression similar to an answer I previously placed on SO.
^\s*(?:\+?(\d{1,3}))?[-. (]*(\d{3})[-. )]*(\d{3})[-. ]*(\d{4})(?: *x(\d+))?\s*$
It would match the following examples and much more:
18005551234
1 800 555 1234
[phone]
[phone]
1-800-555-1234
1 [phone]
[phone]
[phone]
(800)5551234
800-555-1234
800.555.1234
800 555 1234x5678
8005551234 x5678
1 800 555-1234
1----800----555-1234
Regardless of the way the phone number is entered, the capture groups can be used to breakdown the phone number so you can process it in your code.
Group1: Country Code (ex: 1 or 86)
Group2: Area Code (ex: 800)
Group3: Exchange (ex: 555)
Group4: Subscriber Number (ex: 1234)
Group5: Extension (ex: 5678)
Here is a breakdown of the expression if you're interested:
^\s* #Line start, match any whitespaces at the beginning if any.
(?:\+?(\d{1,3}))? #GROUP 1: The country code. Optional.
[-. (]* #Allow certain non numeric characters that may appear between the Country Code and the Area Code.
(\d{3}) #GROUP 2: The Area Code. Required.
[-. )]* #Allow certain non numeric characters that may appear between the Area Code and the Exchange number.
(\d{3}) #GROUP 3: The Exchange number. Required.
[-. ]* #Allow certain non numeric characters that may appear between the Exchange number and the Subscriber number.
(\d{4}) #Group 4: The Subscriber Number. Required.
(?: *x(\d+))? #Group 5: The Extension number. Optional.
\s*$ #Match any ending whitespaces if any and the end of string.
To make the Area Code optional, just add a question mark after the (\d{3}) for the area code.

Answer 3

^(\+\d{1,2}\s?)?1?\-?\.?\s?\(?\d{3}\)?[\s.-]?\d{3}[\s.-]?\d{4}$
Matches these phone numbers:
1-718-444-1122
718-444-1122
(718)-444-1122
17184441122
7184441122
718.444.1122
1718.444.1122
1-123-456-7890
1 123-456-7890
1 [phone]
1 123 456 7890
1.123.456.7890
[phone]
18005551234
1 800 555 1234
[phone]
[phone]
1-800-555-1234
1 [phone]
[phone]
[phone]
(800)5551234
800-555-1234
800.555.1234
18001234567
1 800 123 4567
1-800-123-4567
[phone]
[phone]
[phone]
1(800)1234567
[phone]
1.8001234567
1.800.123.4567
[phone]
18001234567
1 800 123 4567
[phone]
[phone]
1-800-123-4567
1 [phone]
[phone]
[phone]
(800)1234567
800-123-4567
800.123.4567
1231231231
123-1231231
123123-1231
123-123 1231
123 123-1231
123-123-1231
[phone]
[phone]
[phone]
[phone]
[phone]
[phone]
[phone]
555-444-6789
555.444.6789
555 444 6789
18005551234
1 800 555 1234
[phone]
[phone]
1-800-555-1234
1.800.555.1234
+1.800.555.1234
1 [phone]
[phone]
[phone]
(800)5551234
800-555-1234
800.555.1234
[phone]
[phone]
[phone]
18005551234
1 800 555 1234
[phone]
1 [phone]
See regex101.com

Answer 4

Regex pattern to validate a regular 10 digit phone number plus optional international code (1 to 3 digits) and optional extension number (any number of digits):
/(\+\d{1,3}\s?)?((\(\d{3}\)\s?)|(\d{3})(\s|-?))(\d{3}(\s|-?))(\d{4})(\s?(([E|e]xt[:|.|]?)|x|X)(\s?\d+))?/g
Demo: https://www.regextester.com/103299
Valid entries:
/* Full number */
[phone] Ext. 99999
/* Regular local phone number (XXX) XXX-XXXX */
1231231231
123-1231231
123123-1231
123-123 1231
123 123-1231
123-123-1231
[phone]
[phone]
[phone]
[phone]
/* International codes +XXX (XXX) XXX-XXXX */
[phone]
[phone]
/* Extensions (XXX) XXX-XXXX Ext. XXX... */
1234567890 Ext 1123123
1234567890Ext 1123123
1234567890 Ext1123123
1234567890Ext1123123
1234567890 Ext: 1123123
1234567890Ext: 1123123
1234567890 Ext:1123123
1234567890Ext:1123123
1234567890 Ext. 1123123
1234567890Ext. 1123123
1234567890 Ext.1123123
1234567890Ext.1123123
1234567890 ext 1123123
1234567890ext 1123123
1234567890 ext1123123
1234567890ext1123123
1234567890 ext: 1123123
1234567890ext: 1123123
1234567890 ext:1123123
1234567890ext:1123123
1234567890 X 1123123
1234567890X1123123
1234567890X 1123123
1234567890 X1123123
1234567890 x 1123123
1234567890x1123123
1234567890 x1123123
1234567890x 1123123

Answer 5

Here's a fairly compact one I created.
Search: \+?1?\s*\(?-*\.*(\d{3})\)?\.*-*\s*(\d{3})\.*-*\s*(\d{4})$
Replace: +1 \($1\) $2-$3
Tested against the following use cases.
18001234567
1 800 123 4567
1-800-123-4567
[phone]
[phone]
[phone]
1(800)1234567
[phone]
1.8001234567
1.800.123.4567
1--800--123--4567
[phone]

Answer 6

Adding up an example using above mentioned solutions on jsfiddle.
I have modified the code a bit as per my clients requirement. Hope this also helps someone.
/^\s*(?:\+?(\d{1,3}))?[- (]*(\d{3})[- )]*(\d{3})[- ]*(\d{4})(?: *[x/#]{1}(\d+))?\s*$/
See Example Here

Answer 7

Phone number regex that I use:
/^[+]?(\d{1,2})?[\s.-]?\(?\d{3}\)?[\s.-]?\d{3}[\s.-]?\d{4}$/
Covers:
18001234567
1 800 123 4567
[phone]
[phone]
1-800-123-4567
1 [phone]
[phone]
[phone]
(800)1234567
800-123-4567
800.123.4567

Answer 8

try this for Pakistani users .Here's a fairly compact one I created.
((\+92)|0)[.\- ]?[0-9][.\- ]?[0-9][.\- ]?[0-9]
Tested against the following use cases.
[phone]
[phone]
[phone]
[phone]
+92 345 - 540 - 5883

Answer 9

Starting with #Ravi's answer, I also applied some validation rules for the NPA (Area) Code.
In particular:
It should start with a 2 (or higher)
It cannot have "11" as the second and third digits (N11).
There are a couple other restrictions, including reserved blocks (N9X, 37X, 96X) and 555, but I left those out, particularly because the reserved blocks may see future use, and 555 is useful for testing.
This is what I came up with:
^((\+\d{1,2}|1)[\s.-]?)?\(?[2-9](?!11)\d{2}\)?[\s.-]?\d{3}[\s.-]?\d{4}$
Alternately, if you also want to match blank values (if the field isn't required), you can use:
(^((\+\d{1,2}|1)[\s.-]?)?\(?[2-9](?!11)\d{2}\)?[\s.-]?\d{3}[\s.-]?\d{4}$|^$)
My test cases for valid numbers (many from #Francis' answer) are:
18005551234
1 800 555 1234
[phone]
[phone]
1-800-555-1234
1.800.555.1234
+1.800.555.1234
1 [phone]
[phone]
[phone]
(800)5551234
800-555-1234
800.555.1234
My invalid test cases include:
[phone] // Area code starts with 0
[phone] // Area code starts with 1
[phone] // Area code ends with 11
180055512345 // Too many digits
1 800 5555 1234 // Prefix code too long
+1 800 555x1234 // Invalid delimiter
[phone] // Country code too long
1-800-555-1234p // Invalid character
1 [phone] // Too many spaces
800x555x1234 // Invalid delimiter
86 800 555 1212 // Non-NA country code doesn't have +
My regular expression does not include grouping to extract the digit groups, but it can be modified to include those.

Answer 10

I find this regular expression most useful for me for 10 digit contact number :
^(?:(?:\+|0{0,2})91(\s*[\-]\s*)?|[0]?)?[789]\d{9}$
Reference: https://regex101.com/r/QeQewP/1
Explanation:

Answer 11

Perhaps the easiest one compare to several others.
\(?\d+\)?[-.\s]?\d+[-.\s]?\d+
It matches the following:
[phone]
555-444-6789
555.444.6789
555 444 6789

Answer 12

The expressions for 1, 3 and 4 are quite similar, so you can use:
^([1-9]\d{2})([- .])(\d{3})$2(\d{4})$
Note that, depending on the language and brand of regexes used, you might need to put \2 instead of $2 or such matching might not be supported at all.
I see no good way to combine this with the format 2, apart from the obvious ^(regex for 1,3,4|regex for 2)$ which is ugly, clumsy and makes it hard to get out the parts of the numbers.
As for the area code, you can add (\+\d)? to the beginning to capture a single-digit area code (sorry, I don't know the format of your area codes).

Answer 13

How about this?
^(\+?[01])?[-.\s]?\(?[1-9]\d{2}\)?[-.\s]?\d{3}[-.\s]?\d{4}
EDIT: I forgot about the () one.
EDIT 2: Got the first 3 digit part wrong.

Answer 14

This code will match a US or Canadian phone number, and will also make sure that it is a valid area code and exchange:
^((\+1)?[\s-]?)?\(?[2-9]\d\d\)?[\s-]?[2-9]\d\d[\s-]?\d\d\d\d
Test on Regex101.com

Answer 15

This is my Regex the worked on US numbers in the FreeCodeCamp phone number challenge:
/^\d{3}(-|\s)\d{3}(-|\s)\d{4}$|^\d{10}$|^1\s\d{3}(-|\s)\d{3}(-|\s)\d{4}$|^(1\s?)?\(\d{3}\)(\s|\-)?\d{3}\-\d{4}$/
Matches:
555-555-5555
[phone]
[phone]
555 555 5555
5555555555
1 555 555 5555 etc

Answer 16

Above regex is a slight modification of #Francis Gagnon.
Objective : To detect any possible pattern a user can share their US phone number
Version 1:
^\s*(?:\+?(\d{1,3}))?[\W\D\s]*(\d[\W\D\s]*?\d[\D\W\s]*?\d)[\W\D\s]*(\d[\W\D\s]*?\d[\D\W\s]*?\d)[\W\D\s]*(\d[\W\D\s]*?\d[\D\W\s]*?\d[\W\D\s]*?\d)(?: *x(\d+))?\s*$
Test it over here Codepen: https://codepen.io/kiranbhattarai/pen/NWKMXQO
Explanation of the regex : https://regexr.com/4kt5j
Version 2:
\s*(?:\+?(\d{1,3}))?[\W\D\s]^|()*(\d[\W\D\s]*?\d[\D\W\s]*?\d)[\W\D\s]*(\d[\W\D\s]*?\d[\D\W\s]*?\d)[\W\D\s]*(\d[\W\D\s]*?\d[\D\W\s]*?\d[\W\D\s]*?\d)(?: *x(\d+))?\s*$
What is in it: The test cases can be a part of the string. In version one the test cases should be a start of a line to work.
Codepen: https://codepen.io/kiranbhattarai/pen/GRKGNGG
Explanation of the regex : https://regexr.com/4kt9n
If you can find a pattern that can fail please do comment i will fix it.
Test Cases: Pass
8 0 0 4 4 4 5 55 5
1 800 555 1234
[phone]
[phone]
1-800-555-1234
1 [phone]
[phone]
[phone]
(800)5551234
800-555-1234
800.555.1234
800 555 1234x5678
8005551234 x5678
1 800 555-1234
1----800----555-1234
800 (555) 1234
800(555)1234
8 0 0 5 5 5 1 2 3 4
8.0.0.5.5.5.1.2.3.4
8-0-0-5-5-5-1-2-3-4
(8)005551234
(80)05551234
8(00)5551234
8#0#0#5551234
8/0/0/5/5/5/1/2/3/4
8*0*0*5*5*5*1*2*3*4
8:0:0:5:5:5:1:2:3:4
8,0,0,5,5,5,1,2,3,4
800,555,1234
800:555:1234
1-718-444-1122
718-444-1122
(718)-444-1122
17184441122
7184441122
718.444.1122
1718.444.1122
1-123-456-7890
1 123-456-7890
1 [phone]
1 123 456 7890
1.123.456.7890
[phone]
18005551234
1 800 555 1234
[phone]
[phone]
1-800-555-1234
1 [phone]
[phone]
[phone]
(800)5551234
800-555-1234
800.555.1234
18001234567
1 800 123 4567
1-800-123-4567
[phone]
[phone]
[phone]
1(800)1234567
[phone]
1.8001234567
1.800.123.4567
[phone]
18001234567
1 800 123 4567
[phone]
[phone]
1-800-123-4567
1 [phone]
[phone]
[phone]
(800)1234567
800-123-4567
800.123.4567
1231231231
123-1231231
123123-1231
123-123 1231
123 123-1231
123-123-1231
[phone]
[phone]
[phone]
[phone]
[phone]
[phone]
555-444-6789
555.444.6789
555 444 6789
1 800 555 1234
[phone]
[phone]
1-800-555-1234
1.800.555.1234
+1.800.555.1234
1 [phone]
[phone]
[phone]
(800)5551234
800-555-1234
800.555.1234
[phone]
[phone]
[phone]
18005551234
1 800 555 1234
[phone]
1 [phone]

Answer 17

I'm just throwing this answer in there since it solves a problem of mine, it's based off of #stormy's answer, but includes 3 digit country codes and more importantly can be used anywhere in a string, but won't match is it's not preceded by a space/start of the string and ending with a word boundary. This is useful so that it won't match random numbers in the middle of a URL or something
((?:\s|^)(?:\+\d{1,3}\s?)?1?\-?\.?\s?\(?\d{3}\)?[\s.-]?\d{3}[\s.-]?\d{4})(?:\b)

Answer 18

Here's a regex that matches North American numbers as well as international numbers such as for middle east.
^((\+|0{0,2})([0-9]){1,3})?[-.●\s]?\(?([0-9]{2,3})\)?[-.●\s]?([0-9]{3})[-.●\s]?([0-9]{4})$

Answer 19

I know this doesn't answer OP's question directly but if you are asking the same question as OP there is a good chance your are looking for a way to validate and store a phone number in either state or a database. Instead of trying to detect every possible combination of character that could be a phone number you might find it easier to break this task into multiple steps.
strip out all none numbers
strip out leading 1s
make sure the number is at most 10 digits
Javascript pseudo example assuming "phone" is user input stored as a string:
phone.replace(/\D/g, "")
phone.replace(/^1+/g, "")
phone.slice(0, 10)
phone.length === 10 ? "do something" : "don't do something"
Code above will need to be tweaked for your purposes and is left as simple as possible for none javascript readers.
For presentation purposes you can always layer dashes and leading 1s back in later but for storage you should probable only keep the actual numbers. This approach also has the added advantage of leaving you with some easy to digest regular expressions.

Answer 20

^(\+1)?\s?(\([1-9]\d{2}\)|[1-9]\d{2})(-|\s|.)\d{3}(-|\s|.)\d{4}

Answer 21

This is a more comprehensive version that will match as much as I can think of as well as give you group matching for country, region, first, and last.
(?<number>(\+?(?<country>(\d{1,3}))(\s|-|\.)?)?(\(?(?<region>(\d{3}))\)?(\s|-|\.)?)((?<first>(\d{3}))(\s|-|\.)?)((?<last>(\d{4}))))

Answer 22

what about multiple numbers with "+" and seperate them with ";" "," "-" or " " characters?

Answer 23

I ended up with
const regexBase = '(?:\\+?(\\d{1,3}))?[-. (]*(\\d{3})?[-. )]*(\\d{3})[-. ]*(\\d{4,5})(?: *x(\\d+))?';
const phoneRegex = new RegExp('\\s*' + regexBase + '\\s*', 'g');
this was to allow for things like dutch numbers, for example
[phone]