# Excel OFFSET Function

The Excel OFFSET function returns a reference to a range constructed in parts: a starting point, a row and column offset, and a final height and width in rows and columns. OFFSET is handy in formulas that dynamically average or sum "last n values".

**reference**- The starting point, supplied as a cell reference or range.**rows**- The number of rows to offset below the starting reference.**cols**- The number of columns to offset to the right of the starting reference.**height**- [optional] The height in rows of the returned reference.**width**- [optional] The width in columns of the returned reference.

OFFSET returns a reference to a range that is offset from a starting point in a worksheet. The starting point can be one cell or a range of cells, and the offset is supplied as rows or columns "offset" from the starting point. The **height** and **width** arguments are optional and determine the size of the reference that is created.

OFFSET can be used to build a dynamic named range for charts or pivot tables, to make sure that source data is always up to date.

- OFFSET only returns a reference, no cells are moved.
- Both
**rows**and**cols**can be supplied as negative numbers to reverse their normal offset direction - negative**cols**offset to the left, and negative**rows**offset above. - OFFSET is a "volatile" formula; it is recalculated whenever there is any change to a worksheet. It can slow down Excel in a complicated worksheet.
- OFFSET will display the #REF! error value if the offset is outside the edge of the worksheet.
- When height or width is omitted, the height and width of
**reference**is used. - OFFSET can be used with any other function that expects to receive a reference.

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