I googled it beforehand it said mls, so thats what I did and it was quite acuarate I think. Do some googling, everyone on here seems to use grams but all info I found says mls, which makes sense as implants r measured in volume and rice probably isnt the same mass as silicone (sorry to get all scientist on this, but I am a biochemist so cant help it, spend my life weighing/measuring out stuff lo!)