The density of pure water is approximately 1000 kg/m³ or 1 g/cm³. It varies slightly with temperature, reaching its maximum density at about 4°C. Salinity also increases density.
The density of water is 1 gram per cubic centimeter (1 g/cm³) at room temperature. This means 1 cm³ of water weighs 1 gram. Example: If you have 100 cm³ of water, it will weigh 100 grams. Water’s density helps objects float or sink.
The density of water is 1 gram per cubic centimeter (g/cm³) or 1,000 kilograms per cubic meter (kg/m³) at 4°C (39.2°F), its temperature of maximum density. Slight variations occur with temperature or impurities.
The density of water varies with temperature—it's about 1.000 g/cm³ (or 1000 kg/m³) at 4 °C, its maximum. At 25 °C it’s roughly 0.997 g/cm³, decreasing to around 0.958 g/cm³ at 100 °C. Ice, being less dense (~0.917 g/cm³), floats in liquid water
