Silicone
Silicone: 1cc weighs 0.0375 oz. To calculate the weight of silicone implants, see the directions below.
If you have two 300cc implants then:
300cc x 2 = 600cc total
600cc x 0.0375 = 22.5oz
22.5oz divided by 16 = 1.40625 lbs. for both implants
Saline
If you have 2 300cc saline implants then:
300cc x 2 = 600cc total
600cc divide by 29.574 (to convert to ounces) = 20.2880 ounces
20.5338 divided by 16 (ounces) = 1.268 lbs. for both implants