Categories October Surprise 2024 Density of Water: kg/m³, g/cm³, and Temperature Table | Density Calculator Post author By Post date September 4, 2026 At 20°C, the density of water is 0.9982 g/cm³. At its maximum density point of 3.98°C, it is 0.99997 g/cm³, which is why 1 g/cm³ is used as the standard rounded reference value in chemistry.