Free online phone number regex generator — create validation patterns for US, UK, international, and E.164 formats instantly in your browser. No data is stored. Includes matching examples for each format.
Phone number format
Free online phone number regex generator — create validation patterns for US, UK, international, and E.164 formats instantly in your browser. No data is stored. Includes matching examples for each format.
Runs entirely in your browser. No data is sent to our servers.
Get the regex pattern for US phone number validation
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 Replace
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 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.