Ice and Water - Melting Points vs. Pressure
Online calculator, figures and tables with melting points of ice to water at pressures ranging from 0 to 29000 psia (0 to 2000 bara). Temperature given as °C, °F, K and °R.
Melting point: The temperature at which a solid turns into a liquid.
The melting point of water is dependent of the pressure above the ice (solid water), and the melting point or freezing temperature decreases with increasing pressure. By definition 0 °C is at the melting point of water at 1 atmosphere pressure.
Online Ice to Water Melting Point Calculator
The calculator below can be used to calculate the water melting point at given pressures.
The output temperature is given as °C, °F, K and °R.
Note! Pressure must be within the ranges 0.01-2000 bara, 0.1-29 000 psia, 5-1500 000 mm Hg or 0.2-59000 in Hg.
Pressure
Choose the actual unit of pressure:bara psia mm Hg in Hg
See Water and Heavy Water for thermodynamic properties at standard condtions.
See also other properties of Water at varying temperature and pressure: Boiling points at high pressure, Boiling points at vacuum pressure, Density and specific weight, Dynamic and kinematic viscosity, Enthalpy and entropy, Heat of vaporization, Ionization Constant, pKw, of normal and heavy water, Prandtl number, Properties at Gas-Liquid Equilibrium Conditions, Saturation pressure, Specific gravity, Specific heat (heat capacity), Specific volume, Thermal conductivity, Thermal diffusivity and Vapour pressure at gas-liquid equilibrium.
Pressure | Temperature | |||||
[MPa] | [bara] | [psia] | [mm Hg] | [in Hg] | [°C] | [°F] |
0.000612 | 0.00612 | 0.089 | 4.59 | 0.18 | 0.01 | 32.02 |
0.1 | 1.01325 | 14.7 | 750 | 29.5 | 0.0026 | 32.00 |
1 | 10 | 145 | 7501 | 295 | -0.064 | 31.88 |
2 | 20 | 290 | 15001 | 591 | -0.14 | 31.75 |
5 | 50 | 725 | 37503 | 1476 | -0.37 | 31.33 |
10 | 100 | 1450 | 75006 | 2953 | -0.75 | 30.65 |
15 | 150 | 2176 | 112509 | 4429 | -1.14 | 29.95 |
20 | 200 | 2901 | 150012 | 5906 | -1.54 | 29.23 |
30 | 300 | 4351 | 225019 | 8859 | -2.36 | 27.75 |
40 | 400 | 5802 | 300025 | 11812 | -3.21 | 26.22 |
50 | 500 | 7252 | 375031 | 14765 | -4.09 | 24.64 |
60 | 600 | 8702 | 450037 | 17718 | -5.00 | 23.00 |
70 | 700 | 10153 | 525043 | 20671 | -5.94 | 21.31 |
80 | 800 | 11603 | 600049 | 23624 | -6.91 | 19.56 |
90 | 900 | 13053 | 675056 | 26577 | -7.91 | 17.76 |
100 | 1000 | 14504 | 750062 | 29530 | -8.94 | 15.91 |
120 | 1200 | 17405 | 900074 | 35436 | -11.09 | 12.04 |
140 | 1400 | 20305 | 1050086 | 41342 | -13.35 | 7.97 |
160 | 1600 | 23206 | 1200099 | 47248 | -15.73 | 3.69 |
180 | 1800 | 26107 | 1350111 | 53154 | -18.22 | -0.80 |
200 | 2000 | 29008 | 1500123 | 59060 | -20.83 | -5.49 |