The pelagic stingray typically grows to  long and  across. The largest individuals on record are from a captive rearing experiment conducted from 1995 to 2000, in which a male reached  across and , and a female  across and .
The pelagic stingray generally reaches dimensions of and . The largest recorded examples originated from a breeding program between 1995 and 2000, where males reached sizes of and females measured widths of and 