ReferenceExcel FormulasSupported FormulasISODDOn this pageISODD The ISODD function checks if a number is odd. Syntax =ISODD(number) Parameters number: The number to test. If not an integer, it is truncated. Examples =ISODD(3) // Returns TRUE=ISODD(2) // Returns FALSE=ISODD(3.5) // Returns TRUE (truncated to 3)