Density, Specific Gravity and Weight-to-Volume
Weight of a volume, volume of a weight, specific gravity from three weighings, and % w/w to % w/v.
Open the tool → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- What to work out
- Specific gravity from three weighings
- Measure mode: weight of the empty container
- 20 g
- Measure mode: container filled with the liquid
- 51.25 g
- Measure mode: container filled with water
- 45 g
Result: Specific gravity: 1.25.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- What to work out: weight of a volume, volume of a weight, specific gravity from three weighings (measure), or % w/w to % w/v (strength)
- Specific gravity, or density in g/mL (all modes but measure)
- Volume (weight mode)
- Weight (volume mode)
- Strength in % w/w (strength mode)
- Measure mode: weight of the empty container
- Measure mode: container filled with the liquid
- Measure mode: container filled with water
How this is calculated
Citation
Definitions: density is mass per volume, and specific gravity is a liquid's density over water's, with water taken as 1 g/mL. Weight = volume × specific gravity; % w/v = % w/w × specific gravity.
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.