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Find Duplicate List Items

Show which items appear more than once in a list, with how many times each repeats.

Use it as often as you like — it's free, with no sign-up and no limits.

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  • Text
  • Free
  • No sign-up
  • Runs in your browser
  • Updated
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Everything you type is processed in your browser. Nothing you enter is sent to our servers or stored by us.

How to use the Find Duplicate List Items

  1. Enter or paste your input in the box (or set the options, if the tool needs no input).
  2. Adjust the options to match what you need — the result updates as you type.
  3. Copy the result or download it, and keep editing if you want a different outcome.

What does this tool do?

Spot repeated emails, keywords, SKUs or names in seconds. Each repeated item is listed once, and an optional count shows how many times it occurs. Matching ignores letter case unless you switch that on.

Everything runs in your browser, so nothing you enter is uploaded or stored.

Why use it?

  • Free, with no sign-up and no limits.
  • Instant results as you type.
  • Private — your data stays on your device.

Example

Input: a
b
a
c
b
a
Result: a (×3)
b (×2)

Privacy

Everything you type is processed in your browser. Nothing you enter is sent to our servers or stored by us. There's no account to create and nothing to install.

Frequently asked questions

How do I remove the duplicates afterwards?

Use Find Unique List Items or Remove Duplicate Lines.

Is the Find Duplicate List Items free to use?

Yes. It is free, needs no account and has no daily limit.

Last reviewed by the M2Toolkit team.

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