How it's calculated
lb = mL × ρ × 0.00220462
mL = volume, ρ = density in g/mL, 0.00220462 = pounds per gram. Reverse with mL = lb ÷ (ρ × 0.00220462).
Common values
| Substance | Pounds per mL |
|---|---|
| Water | 0.002205 lb |
| Honey | 0.003131 lb |
| Mercury | 0.0299 lb |
Common questions
Why does mercury weigh so much more per mL?
Mercury is extremely dense, about 13.5 times the density of water, so the same volume weighs far more.
Can I convert milliliters straight to pounds?
Only if you know the substance. Volume and weight are linked by density, which differs per substance.