How do I replace text using regular expressions?
Check the 'Use Regular Expressions' option, then write standard Javascript regex syntax in the Find field.
Tool Categories
Free Find and Replace Text Online | 1ClickTools
Search for words, phrases, or complex regular expressions and replace them instantly. Supports case-sensitivity, whole words, and global matches.
Frequently Asked Questions
What does matching whole words do?
It ensures a search for 'cat' only matches the word 'cat' itself, and does not replace parts of words like 'category' or 'concatenate'.
Can I replace line breaks or tab spaces?
Yes. By turning on 'Use Regular Expressions', you can search for '\n' to find line breaks or '\t' to find tabs, and replace them.
How many replacements can it perform at once?
It can replace thousands of occurrences instantly, restricted only by your computer's memory.
Is my content secure?
Yes, the entire search and replace process is executed locally in your browser. None of your input or output text is sent to any server.
How accurate is this find replace tool?
All processing runs entirely in your browser using verified algorithms. Results are computed with full double-precision — no server-side rounding or data transmission occurs.