Find and Replace Text

What is the Find and Replace Text?

Find and replace words or phrases in text, with optional case-insensitive and regex modes. Find and replace updates every occurrence of a word or phrase at once, with optional case-insensitive and regular-expression modes for advanced edits.

How to use the Find and Replace Text

1. Paste or type your your text into the box (a sample is pre-filled so you can see how it works).
2. Tick the options you need: ignore case, use regular expression.
3. Results update automatically as you type; you can also press Calculate.
4. Read the output: result, matches.
5. Use the 📊 chart to see the result visually, then copy or share it.

Worked example

With find = tools, replace with = calculators, ignore case = yes, use regular expression = no, the Find and Replace Text returns matches: 1.

Where the Find and Replace Text helps in real life

You wrote a long document and need to change a company name everywhere. Replacing it once updates every mention.

A developer cleans up a data export by replacing all tabs with commas using regex mode.

Common mistakes to avoid

• Replacing parts of longer words by accident.
• Forgetting case sensitivity settings.
• Using regex without testing it.
• Not keeping a backup of the original text.

💡 Practical tip: Replacing “cat” can also change “category” — use whole-word or regex boundaries to avoid surprises.

Tips for better results

• Preview replacements before applying them.
• Use whole-word matching where possible.
• Test regex patterns on a small sample first.

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