regex101: PCRE (Legacy) Match Workspace

\ban ASCII word boundary

Non-Capturing Group(?: Length\ +(?<Length>\d+(?:\.\d+)?|\d+-\d+\/\d+)\ +(?:in|ft|cm|m)| Width\ +(?<Width>\d+(?:\.\d+)?)\ +(?:in|ft|cm|m)| Weight\ +(?<Weight>\d+)\ +(?:oz|lb|g|kg) )

1st Alternative Length\ +(?<Length>\d+(?:\.\d+)?|\d+-\d+\/\d+)\ +(?:in|ft|cm|m)

Lengththe literal text Length (case sensitive)

\ +the literal (32₁₀ / 40₈ / 20₁₆) , repeated at least once

Group Length(?<Length>\d+(?:\.\d+)?|\d+-\d+\/\d+)

1st Alternative\d+(?:\.\d+)?

\d+a digit, repeated at least once

Non-Capturing Group(?:\.\d+)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

2nd Alternative\d+-\d+\/\d+

\d+a digit, repeated at least once

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d+a digit, repeated at least once

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\d+a digit, repeated at least once

\ +the literal (32₁₀ / 40₈ / 20₁₆) , repeated at least once

Non-Capturing Group(?:in|ft|cm|m)

1st Alternativein

inthe literal text in (case sensitive)

2nd Alternativeft

ftthe literal text ft (case sensitive)

3rd Alternativecm

cmthe literal text cm (case sensitive)

4th Alternativem

mthe literal m (109₁₀ / 155₈ / 6D₁₆) (case sensitive)

2nd Alternative Width\ +(?<Width>\d+(?:\.\d+)?)\ +(?:in|ft|cm|m)

Widththe literal text Width (case sensitive)

\ +the literal (32₁₀ / 40₈ / 20₁₆) , repeated at least once

Group Width(?<Width>\d+(?:\.\d+)?)

\d+a digit, repeated at least once

Non-Capturing Group(?:\.\d+)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

\ +the literal (32₁₀ / 40₈ / 20₁₆) , repeated at least once

Non-Capturing Group(?:in|ft|cm|m)

1st Alternativein

inthe literal text in (case sensitive)

2nd Alternativeft

ftthe literal text ft (case sensitive)

3rd Alternativecm

cmthe literal text cm (case sensitive)

4th Alternativem

mthe literal m (109₁₀ / 155₈ / 6D₁₆) (case sensitive)

3rd Alternative Weight\ +(?<Weight>\d+)\ +(?:oz|lb|g|kg)

Weightthe literal text Weight (case sensitive)

\ +the literal (32₁₀ / 40₈ / 20₁₆) , repeated at least once

Group Weight(?<Weight>\d+)

\d+a digit, repeated at least once

\ +the literal (32₁₀ / 40₈ / 20₁₆) , repeated at least once

Non-Capturing Group(?:oz|lb|g|kg)

1st Alternativeoz

ozthe literal text oz (case sensitive)

2nd Alternativelb

lbthe literal text lb (case sensitive)

3rd Alternativeg

gthe literal g (103₁₀ / 147₈ / 67₁₆) (case sensitive)

4th Alternativekg

\ban ASCII word boundary

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

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

Search reference

Regular Expression

\b
(?:
  Length\ +(?<Length>\d+(?:\.\d+)?|\d+-\d+\/\d+)\ +(?:in|ft|cm|m)|
  Width\ +(?<Width>\d+(?:\.\d+)?)\ +(?:in|ft|cm|m)|
  Weight\ +(?<Weight>\d+)\ +(?:oz|lb|g|kg)
)
\b

New

Width 3.5 in
Weight 10 kg
Length 6-3/4 m

Note I've set the 'x' (extended) flag to make it easier to view the regex.

Regular Expressions 101

Regular Expression

Substitution