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100% free · no signupRuns in your browser

Find & Replace

Find and replace text with optional regex and case-insensitive modes.

Best for: Use it to rename a term across a document, fix a repeated typo, or reformat data.

Complete guide

Input

How it's calculated & sources
The Find & Replace uses the standard, deterministic formula, so the same inputs always produce the same result. It runs entirely in your browser, so your inputs are never uploaded. Last reviewed June 2026.

Free & no sign-up · runs entirely in your browser. Results are estimates for general information, not professional advice — verify important decisions with a qualified expert. Last reviewed June 2026.

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Complete guide

Quick answers

Short, sourced answers to the questions people (and AI assistants) ask most.

What is Find & Replace?
A find and replace tool swaps every occurrence of a search term with your replacement, optionally using regular expressions.
Why does Find & Replace matter?
Your text with substitutions applied. Regex mode is powerful but a broad pattern can replace more than you intend.
How is Find & Replace calculated?
It searches your text for the term (plain or regex, case-sensitive or not) and replaces all matches, in your browser.
What are common find & replace mistakes?
Using a greedy or overly broad regex that matches too much.
When should you use the Find & Replace?
Use it to rename a term across a document, fix a repeated typo, or reformat data.

What is the Find & Replace?

A find and replace tool swaps every occurrence of a search term with your replacement, optionally using regular expressions.

How the Find & Replace works

It searches your text for the term (plain or regex, case-sensitive or not) and replaces all matches, in your browser.

Common mistakes to avoid

  • Using a greedy or overly broad regex that matches too much.
  • Forgetting case sensitivity.
  • Not previewing before replacing on important text.

Keywords: find, replace, regex, substitution.

Runs entirely in your browser - your text is not uploaded.

Reviewed by the Free Tools Galaxy editorial team · Updated June 2026 · Calculated privately in your browser.

Frequently asked questions

Is the Find & Replace free to use?+

Yes. Every tool on Free Tools Galaxy is 100% free, runs in your browser and requires no signup.

How accurate is the Find & Replace?+

Find & Replace uses the standard find & replace formula in double-precision arithmetic, so the same inputs always produce the same result and you can verify any figure by hand. It is an educational estimate — real-world outcomes depend on your actual rates, rules and assumptions.

Do you store my inputs?+

No. The Find & Replace runs entirely in your browser. Nothing is uploaded or saved to a server.

Can I use the Find & Replace on mobile?+

Yes — the interface is fully responsive and works on phones, tablets and desktops.

What are common mistakes to avoid?+

The most frequent mistake is mixing units. Double-check your inputs use a single, consistent unit before clicking Calculate.

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Based on this tool, your recent activity and how others chain tools together.

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Share & publish

Share & challenge

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Share-to-grow kit (Reddit, LinkedIn, Medium)
Reddit post
Title: I built/used this free find & replace — instant, no signup

Body: Find and replace text with optional regex and case-insensitive modes. Try it: https://freetoolsgalaxy.com/tools/find-replace
LinkedIn post
Find & Replace on Free Tools Galaxy — Find and replace text with optional regex and case-insensitive modes. https://freetoolsgalaxy.com/tools/find-replace
Medium intro
# Find & Replace — the free tool I keep coming back to

Find and replace text with optional regex and case-insensitive modes.

Try it: https://freetoolsgalaxy.com/tools/find-replace
Quora answer
The fastest way is to use a free in-browser find & replace: https://freetoolsgalaxy.com/tools/find-replace. Find and replace text with optional regex and case-insensitive modes.

Embed this tool anywhere

Free embed code for blogs, docs and dashboards. Every embed sends a backlink home — helping you and the galaxy grow together.

HTML iframe
Drop into any site — auto-resizes to its content height, theme-aware.
<iframe src="https://freetoolsgalaxy.com/tools/find-replace?embed=1" title="Find & Replace" loading="lazy"
  style="width:100%;height:600px;border:0;border-radius:16px;background:#0b1020"
  allow="clipboard-write"></iframe>
<script>window.addEventListener("message",function(e){if(e.data&&e.data.type==="ftg-embed-height"){document.querySelectorAll("iframe").forEach(function(f){if(f.contentWindow===e.source){f.style.height=e.data.height+"px";}});}});</script>
<p><a href="https://freetoolsgalaxy.com/tools/find-replace" target="_blank" rel="noopener">Powered by Find & Replace on Free Tools Galaxy</a></p>
Responsive wrapper
Aspect-locked container — good for blog post bodies.
<div style="position:relative;padding-bottom:75%;height:0;overflow:hidden;border-radius:16px">
  <iframe src="https://freetoolsgalaxy.com/tools/find-replace?embed=1" title="Find & Replace" loading="lazy"
    style="position:absolute;inset:0;width:100%;height:100%;border:0" allow="clipboard-write"></iframe>
</div>
WordPress / Markdown
Paste in a custom-HTML block or markdown file.
[Find & Replace — free online tool](https://freetoolsgalaxy.com/tools/find-replace)

<iframe src="https://freetoolsgalaxy.com/tools/find-replace?embed=1" width="100%" height="600" frameborder="0"></iframe>
Text link-back
Minimal credit link — best for sidebars and footers.
<a href="https://freetoolsgalaxy.com/tools/find-replace" target="_blank" rel="noopener">Try the free Find & Replace</a>

Share-to-Grow Kit

Pre-written, ready-to-paste posts for every major channel. Help others discover this tool — and earn backlinks.

Title
I built a free find & replace that works instantly in the browser — no signup, no ads in your face
Body
Hey r/[subreddit],

I kept needing a quick find & replace and most options online were slow or behind paywalls, so I built one that:

• Runs 100% in your browser (your data never leaves your device)
• No signup, no email wall, no popups
• Loads in under a second on mobile

It covers the standard find & replace use cases (find, replace, regex, substitution) and links out to the formula + worked examples if you want to learn the math.

Link: https://freetoolsgalaxy.com/tools/find-replace

Happy to take feedback — what's missing?
Post to a relevant subreddit (e.g. r/InternetIsBeautiful, r/webdev, r/productivity). Avoid spammy subs.
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