About 正規表現ビルダー
正規表現を視覚的に構築・テスト
Use this free online プログラミングツール tool to work faster without installing extra software. The interface is built for quick input, clear output, and straightforward results on desktop and mobile devices.
正規表現を視覚的に構築・テスト
Quick Add Patterns
Characters
. Any character
\d Digit (0-9)
\w Word character
\s Whitespace
\b Word boundary
Quantifiers
* 0 or more
+ 1 or more
? 0 or 1
{'{'}n{'}'} Exactly n
{'{'}n,m{'}'} n to m
Anchors
^ Start of string
$ End of string
Groups
(abc) Capture group
(?:abc) Non-capture
a|b Or
正規表現を視覚的に構築・テスト
Use this free online プログラミングツール tool to work faster without installing extra software. The interface is built for quick input, clear output, and straightforward results on desktop and mobile devices.
This tool runs in your browser whenever possible, which keeps your inputs private and reduces unnecessary round-trips to the server.