I believe its about 8 ft. I'd have to unwrap this one to check and I might not wrap it back up as nice. I had tested with another a while back by holding each end and holding my arms out...I am 5'2" and I had plenty of length left!
My husband has one he uses it to extend his playstation controller so he can sit on the couch with it when the controller has to charge...so I know it is long enough to do that!