The document provides 12 regular expressions for validating different types of integer numbers, including ranges for numbers, positive/negative integers, integers with thousands separators, hexadecimal numbers, and ZIP codes. It includes examples of strings that would match or not match each regular expression. The regular expressions can be used to validate number formats in applications. The document is intended to be a helpful reference for working with integer number validation through regular expressions.

1. 12 Different
Regular Expression for
Integer Number
Tip #1
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2. Most Usefull Regex By Examples
1.
2.
3.
4.
5.
Regex Number with Range
Regex Allow Only Number
Regex Number Range
Regex Signed Integer
Regex Comma as the thousand separator and the dot as the
decimal separator
6. Regex Five Integer US ZIP Code
7. Regex Positive Integer
8. Regex non zero positive integer
9. Regex Integer with 1000s Separator
10. Regex Hexadecimal Numbers
11. Regex Hexadecimal Number with Range
12. Regex Binary Number
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3. • Five Integer US ZIP Code
^d{5}$
• Matches 33333 | 55555 | 23445
• Non-Matches abcd | 1324 | as;lkjdf
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4. Positive Integer
^d+$
• Matches 123 | 10 | 54
• Non-Matches -54 | 54.234 | abc
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5. • Non zero positive integer
^(0+[1-9]|[1-9])[0-9]*$
• Matches 122, 9992, 000022
• Non-Matches 0, 00000, 1.2, -3.22
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6. • Integer with 1000s Separator
^[1-9]{1}[0-9]{0,2}([.,]?[0-9]{3})*$
• Matches 1,000|1.000|1|10|100|1000
• Non-Matches 1,00|1,0|1,,000|.1|10.
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7. • Hexadecimal Numbers,
0[xX][0-9a-fA-F]+
e.g.
‘0x0f4’, ‘0acdadecf822eeff32aca5830e438cb54a
a722e3’, ‘8BADF00D’
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8. Allow a string to only contain numbers 0 - 9 and
limit length to 50
^[0-9]{1,50}$
– Matches 00303039
– Non Matches 039330a29
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9. 1. Allow Only Number
– A[0-9]+Z
– ^[0-9]+$
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10. • Regex Number Range
a. 000..255: ^([01][0-9][0-9]|2[0-4][0-9]|25[0-5])$
b. 0 or 000..255: ^([01]?[0-9]?[0-9]|2[0-4][0-9]|25[05])$
c. 0 or 000..127: ^(0?[0-9]?[0-9]|1[01][0-9]|12[0-7])$
d. 0..999: ^([0-9]|[1-9][0-9]|[1-9][0-9][0-9])$
e. 000..999: ^[0-9]{3}$
f. 0 or 000..999: ^[0-9]{1,3}$
g. 1..999: ^([1-9]|[1-9][0-9]|[1-9][0-9][0-9])$
h. 001..999: ^(00[1-9]|0[1-9][0-9]|[1-9][0-9][0-9])$
i. 1 or 001..999: ^(0{0,2}[1-9]|0?[1-9][0-9]|[1-9][09][0-9])$
j. 0 or 00..59: ^[0-5]?[0-9]$
k. 0 or 000..366: ^(0?[0-9]?[0-9]|[1-2][0-9][0-9]|3[05][0-9]|36[0-6])$
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11. • Integer decimal number with an optional plus
or minus sign
[+-]?b[0-9]+b
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12. • comma as the thousand separator and the dot
as the decimal separator
^[0-9]{1,3}(,[0-9]{3})*.[0-9]+$
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13. • Hexadecimal Number With Range
• 0 to FFFF
^([1-9a-f][0-9a-f]{1,3}|[0-9a-f])$
• 1 to 366
^(16[0-9a-e]|1[0-5][0-9a-f]|[1-9a-f][0-9a-f]?)$
• 0 to 255
^[1-9a-f]?[0-9a-f]$
• ASCII codes
^(7[0-9a-e]|[2-6][0-9a-f])$
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