この関数は Google スプレッドシートでも Excel と同じように機能します。構文も引数も同じです。
BIN2DEC(number)The BIN2DEC function takes a binary string and returns its equivalent decimal integer. The number argument must be a valid binary string with a maximum of 10 characters (10 bits), where the most significant bit is the sign bit.
=BIN2DEC("1011")結果: 11
Converts the binary value 1011 to the decimal value 11.
=BIN2DEC("1111111111")結果: -1
Converts the 10-bit binary value representing -1 to its decimal equivalent.
It can handle up to 10 bits, ranging from 1111111111 (-1) to 0111111111 (511).