1020 converted to mSv
To convert 1020 Sv to mSv (millisieverts), you would divide 1020 by 1000 (since there are 1000 millisieverts in a sievert).
Thus, 1020 Sv is equivalent to 1,020,000 mSv.
To convert a dose from sievert (Sv) to millisievert (mSv), you need to multiply the value by 1000.
Therefore, 1020 Sv = 1020 * 1000 = 1,020,000 mSv.