Here, I’ll show you how you can concatenate columns with or without a separator.

We are going to use the following example.

## Combine multiple columns into one

In order to concatenate multiple columns into a single column, you have to use the **CONCATENATE** function.

=CONCATENATE(A2,B2,C2,D2)

Alternatively, you can use this simple formula, where every cell is merged via the **&** operator.

=A2&B2&C2&D2

Both formulas are going to return the same result.

The Concatenated column is not the most readable one.

## Combine multiple columns into one (with separator)

In order to make the example cleaner, we are going to add a separator (comma + space) between cells values.

=CONCATENATE(A2,", ",B2,", ",C2,", ",D2)

This time we can also drop the CONCATENATE function and write it as the following formula.

=A2&", "&B2&", "&C2&", "&D2

## Combine multiple columns with date

You can also combine columns with the date. But it’s become more tricky here. Date in Excel is just a number formatted as a date.

If you use the following formula, the result won’t be what we expected.

=CONCATENATE(A2," ",B2,".")

And the same situation occurs with the second method.

=A2&" "&B2&"."

In order to achieve the desired result, we have to first format number as date and the combine the cells.

The first method.

=CONCATENATE(A2," ",TEXT(B2,"mm/dd/yyyy"),".")

The second method.

=A3&" "&TEXT(B2,"mm/dd/yyyy")&"."

The result is what we expected.