regex101: Find a Percentage number in some text

1st Alternative(?x) # free-spacing mode (?(DEFINE) # decimal to decimal: 1.2% to 21.53% (?<dec_to_dec> (?:[0-9]{1,3}[\,\.][0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\,\.][0-9]{1,3}[\%]) ) # Decimal to Whole number: 1.2% to 21% (?<dec_to_int> (?:[0-9]{1,3}[\,\.][0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\%]) ) # Whole number to Decimal: 1% to 21.53% (?<int_to_dec> (?:[0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\,\.][0-9]{1,3}[\%]) ) # Whole number to whole number: 1% to 21% (?<int_to_int> (?:[0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\%]) ) # Single Whole Number: 21% (?<single_int> (?:[0-9]{1,3}[\%]) ) # Single Whole Number: 21% (?<single_dec> (?:[0-9]{1,3}[\,\.][0-9]{1,3}[\%]) ) ) (?&dec_to_dec)

(?x)applies the following effective flags to the remainder of the pattern: gmx

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

Comment: free-spacing mode

Definition Group(?(DEFINE) # decimal to decimal: 1.2% to 21.53% (?<dec_to_dec> (?:[0-9]{1,3}[\,\.][0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\,\.][0-9]{1,3}[\%]) ) # Decimal to Whole number: 1.2% to 21% (?<dec_to_int> (?:[0-9]{1,3}[\,\.][0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\%]) ) # Whole number to Decimal: 1% to 21.53% (?<int_to_dec> (?:[0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\,\.][0-9]{1,3}[\%]) ) # Whole number to whole number: 1% to 21% (?<int_to_int> (?:[0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\%]) ) # Single Whole Number: 21% (?<single_int> (?:[0-9]{1,3}[\%]) ) # Single Whole Number: 21% (?<single_dec> (?:[0-9]{1,3}[\,\.][0-9]{1,3}[\%]) ) )

Comment: decimal to decimal: 1.2% to 21.53%

Group dec_to_dec(?<dec_to_dec> (?:[0-9]{1,3}[\,\.][0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\,\.][0-9]{1,3}[\%]) )

Non-Capturing Group(?:[0-9]{1,3}[\,\.][0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\,\.][0-9]{1,3}[\%])

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

Character Class[\,\.]

\,the literal , (44₁₀ / 54₈ / 2C₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

Character Class[\%]

\%the literal % (37₁₀ / 45₈ / 25₁₆)

\sany whitespace character

tothe literal text to (case sensitive)

\sany whitespace character

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

Character Class[\,\.]

\,the literal , (44₁₀ / 54₈ / 2C₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

Character Class[\%]

\%the literal % (37₁₀ / 45₈ / 25₁₆)

Comment: Decimal to Whole number: 1.2% to 21%

Group dec_to_int(?<dec_to_int> (?:[0-9]{1,3}[\,\.][0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\%]) )

Non-Capturing Group(?:[0-9]{1,3}[\,\.][0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\%])

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

Character Class[\,\.]

\,the literal , (44₁₀ / 54₈ / 2C₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

Character Class[\%]

\%the literal % (37₁₀ / 45₈ / 25₁₆)

\sany whitespace character

tothe literal text to (case sensitive)

\sany whitespace character

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

Character Class[\%]

\%the literal % (37₁₀ / 45₈ / 25₁₆)

Comment: Whole number to Decimal: 1% to 21.53%

Group int_to_dec(?<int_to_dec> (?:[0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\,\.][0-9]{1,3}[\%]) )

Non-Capturing Group(?:[0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\,\.][0-9]{1,3}[\%])

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

Character Class[\%]

\%the literal % (37₁₀ / 45₈ / 25₁₆)

\sany whitespace character

tothe literal text to (case sensitive)

\sany whitespace character

Character Class[0-9]{1,3}

Character Class[\,\.]

Character Class[0-9]{1,3}

Character Class[\%]

Comment: Whole number to whole number: 1% to 21%

Group int_to_int(?<int_to_int> (?:[0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\%]) )

Comment: Single Whole Number: 21%

Group single_int(?<single_int> (?:[0-9]{1,3}[\%]) )

Comment: Single Whole Number: 21%

Group single_dec(?<single_dec> (?:[0-9]{1,3}[\,\.][0-9]{1,3}[\%]) )

(?&dec_to_dec)calls group dec_to_dec as a subroutine

2nd Alternative(?&dec_to_int)

3rd Alternative(?&int_to_dec)

4th Alternative(?&int_to_int)

5th Alternative(?&single_int)

6th Alternative(?&single_dec)

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

Search reference

Regular Expression

(?x)           # free-spacing mode
(?(DEFINE) 
    # decimal to decimal: 1.2% to 21.53%
    (?<dec_to_dec>
        (?:[0-9]{1,3}[\,\.][0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\,\.][0-9]{1,3}[\%])
    ) 
     # Decimal to Whole number: 1.2% to 21%
    (?<dec_to_int>
        (?:[0-9]{1,3}[\,\.][0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\%])
    )
    # Whole number to Decimal: 1% to 21.53%
    (?<int_to_dec>
        (?:[0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\,\.][0-9]{1,3}[\%])
    )
    # Whole number to whole number: 1% to 21%
    (?<int_to_int>
        (?:[0-9]{1,3}[\%]\sto\s[0-9]{1,3}[\%])
    ) 
    # Single Whole Number: 21%
    (?<single_int>
        (?:[0-9]{1,3}[\%])
    )
    # Single Whole Number: 21%
    (?<single_dec>
        (?:[0-9]{1,3}[\,\.][0-9]{1,3}[\%])
    )
)
(?&dec_to_dec)|(?&dec_to_int)|(?&int_to_dec)|(?&int_to_int)|(?&single_int)|(?&single_dec)

New

France: 2.8% to 21%