Build a UNIQUE Formula

When you want a de-duplicated list or the number of distinct values.

What you enter is never uploaded. Everything is processed on this device.

1Enter the range
2Choose the mode
3Copy the formula

Data range (such as A2:A100) Mode Sample data (comma separated) Duplicate-handling formula

Done

🔒 Your files are never sent to an external server. Everything is processed safely inside this browser.

Tools often used together

Remove Duplicate Lines and Sort a ListRemove duplicates and sort a list.

Build a FILTER FormulaBuild a formula that returns the rows that match.

Build a SUMIF or COUNTIF FormulaBuild formulas for conditional totals and counts.

Merge PDFsCombine PDFs into one.

See all tools (back to the home page)

How to use

Enter the data range.
Choose the mode.
Copy the formula and paste it into a cell.

How it works

UNIQUE lists values without duplicates, and SORT-UNIQUE sorts that list.
COUNT counts the distinct values.

Notes

ONCE returns only the values that appear exactly once.
FLAG gives TRUE for rows that are duplicated.

FAQ

Is what I enter sent anywhere?

No. Everything is processed inside the browser on your device.

Do I need to upload a file?

No. The formula is built only inside the browser.

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Guides for this tool

How to Write UNIQUE (Build It Automatically, Free)Counting Distinct Values A Sorted List Values That Appear Once Flagging Duplicates What to Do When It Does Not Work UNIQUE Builder Without Uploading

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