Use this useful tool to convert radiation choosing one of the 22 units of measurment included in this app (with the availability to add custom units), that are:
gray/second, exagray/second, petagray/second, teragray/second, gigagray/second, megagray/second, kilogray/second, hectogray/second, dekagray/second, decigray/second, centigray/second, milligray/second, microgray/second, nanogray/second, picogray/second, femtogray/second, attogray/second, rad/second, joule/kilogram/second, watt/kilogram, rem/second, sievert/second.