1 PGy (Petagray) is equal to 9,999,999,999,999.998 hGy (Hectogray). To convert from Petagray to Hectogray, multiply by 10,000,000,000,000 or divide by 0.0000000000001.
Nine Trillion Nine Hundred Ninety-Nine Billion Nine Hundred Ninety-Nine Million Nine Hundred Ninety-Nine Thousand Nine Hundred Ninety-Nine Point Nine Nine Eight Hectogray