Find and Replace Text Online - Free Tool with Regex

How Find and Replace Works

1. 01Paste your text, then type the search term and its replacement.
2. 02Choose matching options: case sensitive, whole word, or regular expression mode.
3. 03Check the live preview and the exact count of replacements made.
4. 04Copy the modified text once the result looks right.

Replacing Text Safely and Precisely

The difference between a clean replace and a corrupted document is usually one option. Whole word mode is the safety net most people should enable by default: it wraps your search in word boundaries so replacing cat leaves category and scatter untouched. Case sensitivity matters when the same spelling has different meanings, such as replacing the product name Polish without touching polish. For everything beyond literal text, regex mode turns the tool into a precision instrument. Backslash d matches any digit, so a pattern of three digits with a dash template can reformat phone numbers. The pipe character offers alternatives, letting you replace colour or color in one pass. Capture groups are the power feature: wrap parts of the pattern in parentheses and reference them as dollar one and dollar two in the replacement to swap, reorder, or wrap matched text, for example converting Lastname, Firstname into Firstname Lastname across a whole list. The live counter doubles as validation: if you expect 40 replacements and see 4,000, your pattern is too greedy, and if you see zero, check the case option first. Invalid regex shows the parser error immediately instead of silently doing nothing.

When to Use Find and Replace

Use it for any repeated edit across a text: fixing a recurring misspelling, renaming a term throughout documentation, rewriting URLs after a domain move, normalizing inconsistent labels in exported data, or reformatting dates and phone numbers with regex patterns. It is faster than a word processor for one-off jobs because there is nothing to open or configure. When you need the same fixed text added to every line rather than replacing occurrences, a prefix and suffix tool is the more direct route.

Common Use Cases

• ·Fix a misspelled name across an entire article in one action with a verified count.
• ·Rewrite old domain URLs to a new domain throughout exported content.
• ·Normalize label variants like NL, Neth, and Nederland to one canonical value.
• ·Verify the term is gone afterwards with a frequency analysis. → Word Frequency Counter

Expert Tips

• ✻Enable whole word mode by default; partial-word replacements are the most common accident.
• ✻Set the replacement equal to the search term to use the counter as a pure occurrence counter.
• ✻Test regex patterns on a small sample first, then paste the full text once the count looks right.

Frequently Asked Questions