1cc of silicone weighs 0.0375 oz, to calculate the weight of silicone implants tally your total cc, times by single cc weight and then divide by 16, the divide is ro convert from ounces to pounds. So…
If you have two 300cc implants then: 300cc x 2 = 600cc total
600cc x 0.0375 = 22.5oz
Then you divide 22.5oz by 16 to convert from pounds to ounces= 1.40625 lbs. for both implants
I have 615cc so I did 615 x 2 x 0.0375 / 16 = 2.88 so my implants weigh just under 3lbs in total.
Hope that helps!