Converter
dimension-one density ratio · Chemistry / materials / hydrometry · Modern/historical
relative density
exact
- Record
- M583
- Definition quality
- Standardized
- Conversion mode
- contextual
- Calculator
- Context required
Definition
Relative density is the ratio of a substance's density to a specified reference density; for liquids, water is commonly used but conditions must be stated.
History & use
Hydrometers infer relative density from how high or low they float in a liquid.
Modern use
Modern use is context-dependent and varies by region or measurement system.
Sources & evidence
Source tier — · confidence high