Checks if a value is a number and returns TRUE or FALSE.
Diese Funktion funktioniert in Google Sheets genauso wie in Excel — gleiche Syntax und Argumente.
ISNUMBER(value)The ISNUMBER function determines whether a given value is a numeric type. It returns TRUE if the value is a number, and FALSE if it is text, an error, or another data type.
=ISNUMBER(123)Ergebnis: TRUE
Returns TRUE because 123 is a numeric value.
=ISNUMBER("Excel")Ergebnis: FALSE
Returns FALSE because the input is a text string.
No, ISNUMBER returns FALSE for numbers stored as text strings.