>>26867596>>26873053>>26866987>>26885112>>26890546It is not easy to "weigh" a breast accurately without medical equipment.
As you've already concluded, volume is straightforward, but breasts vary greatly in their density due to compositional differences, so there is no way to extrapolate from volume to weight unless you have understanding of the individual's composition. Breast composition can even vary between a woman's breasts. Most of the difference in mass (or "breast density") stems from the ratio between fat and fibroglandular tissue. Aside from saying "lol genetics" we don't know exact causes, but breast composition and density is an active area of research, esp. whether it has an effect on susceptibility to breast cancer. With an MRI and some approximate figures for the tissues involved, you might be able to get close to deriving from volume.
As for "weighing" directly via a scale, anyone who has weighed their breasts on a conventional scale has almost certainly gotten a bullshit number. This is inherent to the mechanics of "weighing" something attached to another entity (breast attached to chest), and the near-impossibility of removing any push or pull factors: Some weight is offset by the breast tissue's attachment to the chest. The only way to compensate for that would be to try to lift a scale towards a the breast, which is just as likely to introduce extraneous force to the system from the other direction: lift into it too high and you are getting extra force added from the forces from the chest pulling down into the scale.
Complicating this further: this erroneous "chest pull" factor is a larger percentage of the force for smaller breasts. So while you might be off by (making up numbers here) an unknowable range of 2% to 10% for a large, pendulous breast, a more average chest is going to have that error factor magnified.
For absolutely huge boobs, you might be able to take multiple measurements with a combination of conventional scale and hanging scale and get an upper and lower bound. For most women, it would be mechanically infeasible to succeed, including women who are large enough to have back problems arising from their breasts.
