BlackMagic Ursa Mini G2 - Iso to gain dBs translation

Recently I have needed to get this information and couldn't quickly find it, so I'm shamelessly placing it here for next time :). 

db ISO
-12=100
-6=200
0=400
+6=800
+12=1600
+18=3200
+24=6400
+30=12800
+36=25600
Natives are 0db and +18db

ISO 100 = -12db. ISO doubles every 6db and the highest ISO is 25600 @ 36db.

Source: https://forum.blackmagicdesign.com/viewtopic.php?t=154758&p=822669