UNIQUE

Dynamic arraysMicrosoft 365

Return the distinct values from a range.

Syntax

UNIQUE(array, [by_col], [exactly_once])

Arguments

array: The source range.
by_coloptional: TRUE to de-dupe columns instead of rows.
exactly_onceoptional: TRUE returns only values that appear exactly once.

Examples

=UNIQUE(Region)

→ the distinct regions

=SORT(UNIQUE(FILTER(City, Region=A2)))

→ a dependent drop-down source

Related functions

FILTER SORT COUNTIF

More Dynamic arrays functions

BYCOL BYROW CHOOSECOLS CHOOSEROWS DROP EXPAND FILTER GROUPBY HSTACK MAKEARRAY MAP PIVOTBY

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Syntax follows Microsoft’s documentation. Examples are written to be pasted into a cell and checked. Argument separators may be ; in your locale. The AI explainer runs on a free community model — verify anything important.