# [kg/m³] kg-m3.com All about density

## Water 4°C density

The density of water is maximum at 4 ° C. Any water with a temperature above / below 4 ° C has a lower density. However, in many calculations, the most common value is 1 kg/m3, but this is a rounded value if high accuracy is not required for the calculation.

Density of Water 4°C (H2O) is 999.9749 kg/m3 (at 1 atm pressure). *

Volumetric mass density of Water 4°C (water) in other popular units:

= 0.9999749 [kg/L] or [g/mL] or [g/cm3] or [t/m3]

= 0.57802216327953 [oz/cu in] (Avoirdupois ounce per cubic inch)

= 1.0431493762934 [oz/US fl oz] (Avoirdupois ounce per fluid ounce)

= 0.036126385204971 [lb/cu in] (Avoirdupois pound per cubic inch)

= 62.426394058179 [lb/cu ft] (pound per cubic foot)

= 1685.512592572 [lb/cu yd] (pound per cubic yard)

= 8.3451949803483 [lb/US gal] (pound per US liquid gallon)

## Specific gravity (or relative density)

SGw4°C = 1 (relative to 4°C water)

SGair20°C = 830.47496055145 (relative to 20°C air)

## Calculator

### Water 4°C mass?

To calculate Water 4°C mass, enter the volume and select units for volume and mass:
Volume:
Mass: ?

### Water 4°C volume?

To calculate Water 4°C volume, enter the mass and select units for mass and volume:
Mass:
Volume: ?

Enter the number, chose units and click on "=" button. Popular units are marked with RED letters. More about used mass- and volume units you can find on conversion.org website

Notice: Don't be confused with expression: "weight of Water 4°C". Unit for weight is Newton, N = mass × g ; where g=9.81 m/s2.

*Source: Engineeringtoolbox.com, Retrieved 2019-03-31