What is the nominal density of water equal to in SI units?

The nominal density of water is commonly recognized as approximately 1 gram per cubic centimeter (g/cm³) at standard temperature and pressure. When converting this value into SI units, 1 g/cm³ is equivalent to 1000 kg/m³. This conversion is made possible by understanding that 1 g/cm³ equals 1000 kg/m³ due to the definitions of the units: there are 1000 grams in a kilogram and 1 cm³ is equivalent to 0.001 liters, thus, when you consider volume in cubic meters, the conversion aligns perfectly.

Therefore, the density of water being 1000 kg/m³ is the accepted value in SI units, confirming why this answer is correct.