As we know One J/g/ms is equal to 1000000 Gy/s (1 J/g/ms = 1000000 Gy/s).

To convert Joule/Gram/Millisecond to Gray/Second, multiply your J/g/ms figure by 1000000.

Example : convert 25 J/g/ms to Gy/s:

25 J/g/ms = 25 × 1000000 Gy/s = Gy/s

To convert Gray/Second to Joule/Gram/Millisecond, divide your Gy/s figure by 1000000.

Example : convert 25 Gy/s to J/g/ms:

25 Gy/s = 25 ÷ 1000000 J/g/ms = J/g/ms