I want to replace all text like this:

"latitude": "32.336533",

with this:

"latitude": 32.336533,

I'm using Notepad++.


Using Regex use the following pattern:


and Replace with:


This worked for me with replace all function of notepad++. It would find "12." too and remove the double quotes. For a more comprehensive search use this Regex pattern:


which actually will find negative numbers as well and matches floats only with digits after the decimal point.


it will match

    "             ; a leading double quote
    (             ; followed by the outer subpattern (in backreference \1:
      \-{0,1}       ; an optional minus sign
      [0-9]+        ; followed by 1 or more decimal digits (could be replaced by \d)
      (             ; followed by the next subpattern
         \.           ; a decimal point
         [0-9]+       ; followed by 1 or more digits
      ){0,1}        ; maximal 1 occurrence of this subpattern, and it's optional
    )             ; end of the outer subpattern
    "             ; followed by the trailing double quote

Backreference \1 includes everything in the outer subpattern including the inner one, if it exists. You could use \d for the [0-9] classes and use the question mark ? instead of the last {0,1} group. Remember that the use of the ? may change the greediness of patterns.


the text in notepad++ with following lines

"latitude": "-32.336533",
"latitude": "32.336533",
"foo": "14"
"bla": "12."
"to7": "12.a"

will be changed after applying "Replace all" to

"latitude": -32.336533,
"latitude": 32.336533,
"foo": 14
"bla": "12."
"to7": "12.a"
  • This assumes that each number is a floating point number. However, this is the more correct answer thus far. May 13 '14 at 22:16
  • @KronoS The original did match integers too. I've edited the regexp to include negative numbers and demanding at least one digit after the decimal point (last group optional).
    – VMai
    May 13 '14 at 22:53
  • Your updated answer works great and is a great solution to the problem handling cases where the user probably wants string types to stay string and actual numbers to be converted to numbers. May 14 '14 at 15:26

Regex match


Replace with

  • This doesn't handle negative numbers, and will match unwanted strings like "...", "3..2", "2014.05.13", or "".
    – and31415
    May 13 '14 at 23:19

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