Regular Expressions 101

Pro

^start of line

Non-Capturing Group(?:[A-Z]|[A-Z][A-Z]|[A-X][A-F][A-D])

1st Alternative[A-Z]

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

2nd Alternative[A-Z][A-Z]

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

3rd Alternative[A-X][A-F][A-D]

Character Class[A-X]

A-Xone character from A (65₁₀) to X (88₁₀) (case sensitive)

Character Class[A-F]

A-Fone character from A (65₁₀) to F (70₁₀) (case sensitive)

Character Class[A-D]

A-Done character from A (65₁₀) to D (68₁₀) (case sensitive)

Non-Capturing Group(?:[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9][0-9]|10[0-3][0-9][0-9][0-9][0-9]|104[0-7][0-9][0-9][0-9]|1048[0-4][0-9][0-9]|10485[0-6][0-9]|104857[0-6])

1st Alternative[1-9]

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

2nd Alternative[1-9][0-9]

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

3rd Alternative[1-9][0-9][0-9]

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

4th Alternative[1-9][0-9][0-9][0-9]

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

5th Alternative[1-9][0-9][0-9][0-9][0-9]

6th Alternative[1-9][0-9][0-9][0-9][0-9][0-9]

7th Alternative10[0-3][0-9][0-9][0-9][0-9]

8th Alternative104[0-7][0-9][0-9][0-9]

9th Alternative1048[0-4][0-9][0-9]

10th Alternative10485[0-6][0-9]

11th Alternative104857[0-6]

$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

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

^(?:[A-Z]|[A-Z][A-Z]|[A-X][A-F][A-D])(?:[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9][0-9]|10[0-3][0-9][0-9][0-9][0-9]|104[0-7][0-9][0-9][0-9]|1048[0-4][0-9][0-9]|10485[0-6][0-9]|104857[0-6])$

New

A1
AA11
AAA111
ZZ12
YY1048575
XFD1048576
A0
AA01
AAZ1111111
XFE1048576
XFD1048577
ZZZ333
ZZZ9999999