Specific Gravity

Also known as relative density

SG = \frac{\rho}{\rho_{water}}

SG =

ρ =

Enter your known values, leave one input blank, and solves for the missing one. Try different units for next level excitement!

Learning zone

Specific gravity strips the units off density by dividing by water's 1000 kg/m³: anything below 1 floats, anything above sinks. Gasoline sits near 0.74, seawater at 1.025, concrete around 2.4, steel at 7.85. Brewers and battery techs read it with a hydrometer — the sugar in wort raises SG to ~1.050, and as fermentation converts sugar to alcohol the float sinks toward 1.010, tracking the process without opening the vessel.

Specific Gravity

SG = \frac{\rho}{\rho_{water}}

Where

$SG$ = Specific gravity
$\rho$ = Density

Missing one of these? Work it out first, then come back

Specific gravity — Pounds of Active Chemical in a Tank, Pump Water Horsepower
Density — Density, Closed Loop Slug Dose Volume