1 PGy (Petagray) is equal to 8,769,999,999,985.699 R (Roentgen). To convert from Petagray to Roentgen, multiply by 8,769,999,999,985.7 or divide by 0.00000000000011402508551900006.
Eight Trillion Seven Hundred Sixty-Nine Billion Nine Hundred Ninety-Nine Million Nine Hundred Ninety-Nine Thousand Nine Hundred Eighty-Five Point Six Nine Nine Roentgen