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Extract Unique Values from a CSV Column

Pull all distinct values from a single column and export them as a clean list. Great for building lookup tables.

What this tool does

Need a deduplicated list of every category, tag, country, or status value in your CSV? The Extract Unique Values tool scans a column you choose and outputs only the distinct values — one per row — as a single-column CSV. Optionally sorted alphabetically. Useful for building dropdown lists, lookup tables, or data dictionaries.

Problems it solves

  • Building a lookup table from a category or tag column
  • Getting all distinct country or city values from a dataset
  • Finding every unique status value before writing filter logic
  • Creating a deduplicated reference list from a large export
  • Auditing all values in a column for data quality review

Example

5 rows reduced to 3 unique country values, sorted alphabetically.

Before

NameCountry
AliceUS
BobUK
CarolUS
DaveDE
EveUK

After

Country
DE
UK
US

Frequently asked questions

Is the output just a single column?

Yes. The output is a one-column CSV containing only the unique values from the selected column.

What order are the values in?

By default, values are sorted alphabetically. Disable the sort option to preserve the order of first appearance in the original file.

Is this free?

Yes. Extract Unique Values is available on the free plan for files up to 5 MB.

Is blank treated as a unique value?

Yes. If empty cells exist in the column, an empty string is included as one of the unique values.