The nested array error occurs when you try to input an array formula that contains an array. To resolve the error, try removing the second array.

For example, =MUNIT({1,2}) is asking Excel to return a 1x1 array, and a 2x2 array, which isn't currently supported. =MUNIT(2) would calculate as expected.

Nested array #CALC! error

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You can always ask an expert in the Excel Tech Community or get support in the Answers community.

See Also

Dynamic arrays and spilled array behavior

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