Is this golf club the correct size?

Question

I am new to golf, my '1' driver is roughly 3ft 9 inches in length. Is this a standard size?

Answer 1

Assuming your driver has a graphite shaft, then yes 44 to 45 inches in standard.  Steel (pretty rare these days) shafted drivers about 43 inches.

Answer 2

yes, 45 is the standard

Answer 3

Club length is determined by your height.

Edit:  Most drivers for men made by companies who sell their clubs through pro shops and retail golf stores are usually 45 inches or 45.5 inches long. Most women's drivers are 44 or 44.5 inches.  Custom clubmakers will determine the proper club lengths for golfers by first starting with a measurement of the distance from the golfer's wrist to the floor. They compare this measurement to a chart which lists club lengths for each wrist-to-floor dimension. Because golfers vary tremendously in height and arm length - the two important factors for determining a "comfortable length" for the golfer - there is no way that all golfers can play their best with the typical standard lengths offered in standard-made clubs which are simply bought off-the-rack in pro shops or golf retail stores.