Free online regex find and replace — search text with regular expressions and replace matches with custom patterns instantly in your browser. No data is stored. Supports capture group references ($1, $2) in replacement strings.
Regex pattern to search for
Replacement string (supports $1, $2, etc.)
Regex flags
Free online regex find and replace — search text with regular expressions and replace matches with custom patterns instantly in your browser. No data is stored. Supports capture group references ($1, $2) in replacement strings.
Runs entirely in your browser. No data is sent to our servers.
Convert dates from YYYY-MM-DD to MM/DD/YYYY format using regex replace
Regex Tester
Free online regex tester — test regular expressions with live match highlighting and position tracking instantly in your browser. No data is stored. Shows match positions and visual highlighting of matched text.
Regex Explainer
Free online regex explainer — break down any regular expression into plain English descriptions instantly in your browser. No data is stored. Explains character classes, quantifiers, groups, anchors, and lookaheads.
Regex Split
Free online regex text splitter — split text into parts using regular expression delimiters instantly in your browser. No data is stored. Supports custom flags and configurable result limits.
Regex Extract
Free online regex match extractor — find and extract all pattern matches from text instantly in your browser. No data is stored. Supports global, case-insensitive, and unique-only matching.