# Range contains numbers

=SUMPRODUCT(--ISNUMBER(range))>0

To test a range for numbers, you can use a formula based on the ISNUMBER and SUMPRODUCT functions. In the example shown, the formula in G5 is:

=SUMPRODUCT(--ISNUMBER(C5:C9))>0

### How this formula works

Working from the inside out, the ISNUMBER function will return TRUE when given a number and FALSE if not. When you supply a range to ISNUMBER (i.e. an array), ISNUMBER will return an array of results. In the example, the range C5:C9 contains 5 cells, so the array returned by ISNUMBER contains 5 results:

{FALSE;FALSE;FALSE;TRUE;FALSE}

TRUE values represent numeric values.

We want to know if this result contains *any* TRUE values, so we use the double negative operator (--) to force the TRUE and FALSE values to 1 and 0 respectively. This is an example of boolean logic, and the result is an array of 1's and 0's:

{0;0;0;1;0}

We use the SUMPRODUCT function to sum the array:

=SUMPRODUCT({0;0;0;1;0})

Any sum greater than zero means at least one number exists in the range, so we use ">0" to force a final result of TRUE or FALSE.

## Excel Formula Training

Formulas are the key to getting things done in Excel. In this accelerated training, you'll learn how to use formulas to manipulate text, work with dates and times, lookup values with VLOOKUP and INDEX & MATCH, count and sum with criteria, dynamically rank values, and create dynamic ranges. You'll also learn how to troubleshoot, trace errors, and fix problems. Instant access. See details here.