Water - Saturation Pressure vs. Temperature

Online Water saturation pressure Calculator

The calculator below can be used to calculate the water saturation pressure at given temperatures.
The output pressure is given as kPa, bar, atm, psi (lb/in ² ) and psf (lb/ft ² ).

Temperatur must be within the ranges 0-370 °C, 32-700 °F, 273-645 K and 492-1160 °R

Temperature
Choose the actual unit of temperature:
°C °F K °R

Load Calculator!

The saturation pressure of water depends on temperature as shown below:

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, pK _w , of normal and heavy water , Melting points at high pressure , Prandtl number , Properties at Gas-Liquid Equilibrium Conditions , Specific gravity , Specific heat (heat capacity) , Specific volume , Thermal conductivity , Thermal diffusivity and Vapour pressure at gas-liquid equilibrium .

Saturation pressure at temperatures given in degree Celcius and

pressure given in kiloPascals [kPa], bars, atmospheres [atm] and pounds per square inch [psi]:

Water - Saturation Pressure vs. Temperature
Temperature	Water saturation pressure
[°C]	*[kPa], [100bar]**	[atm]	[psi]
0.01	0.61165	0.0060	0.088712
2	0.70599	0.0070	0.10240
4	0.81355	0.0080	0.11800
10	1.2282	0.0121	0.17814
14	1.5990	0.0158	0.23192
18	2.0647	0.0204	0.29946
20	2.3393	0.0231	0.33929
25	3.1699	0.0313	0.45976
30	4.2470	0.0419	0.61598
34	5.3251	0.0526	0.77234
40	7.3849	0.0729	1.0711
44	9.1124	0.0899	1.3216
50	12.352	0.122	1.7915
54	15.022	0.148	2.1788
60	19.946	0.197	2.8929
70	31.201	0.308	4.5253
80	47.414	0.468	6.8768
90	70.182	0.693	10.179
96	87.771	0.866	12.730
100	101.42	1.001	14.710
110	143.38	1.42	20.796
120	198.67	1.96	28.815
130	270.28	2.67	39.201
140	361.54	3.57	52.437
150	476.16	4.70	69.061
160	618.23	6.10	89.667
180	1002.8	9.90	145.44
200	1554.9	15.35	225.52
220	2319.6	22.89	336.43
240	3346.9	33.03	485.43
260	4692.3	46.31	680.56
280	6416.6	63.33	930.65
300	8587.9	84.76	1245.6
320	11284	111.4	1636.6
340	14601	144.1	2117.7
360	18666	184.2	2707.3
370	21044	207.7	3052.2

Saturation pressure at temperatures given in degree Fahrenheit and

pressure given in pounds per square inch [psi], pounds per square foot [psf], kiloPascals [kPa] and bars:

Water - Saturation Pressure vs. Temperature
Temperature	Water saturation pressure
[°F]	[psi]	[psf]	*[kPa], [100bar]**
32.02	0.088712	12.775	0.612
34	0.09624	13.858	0.664
39.2	0.11800	16.991	0.814
40	0.12170	17.524	0.839
50	0.17814	25.651	1.228
60	0.25633	36.912	1.767
70	0.36341	52.330	2.506
80	0.50759	73.092	3.500
90	0.69915	100.7	4.821
100	0.95055	136.9	6.554
110	1.2766	183.8	8.802
120	1.6949	244.1	11.686
130	2.2258	320.5	15.347
140	2.8929	416.6	19.946
150	3.7232	536.1	25.671
160	4.7474	683.6	32.732
170	5.9999	864.0	41.368
180	7.5196	1083	51.846
190	9.3495	1346	64.462
200	11.537	1661	79.547
212	14.710	2118	101.42
220	17.203	2477	118.6
240	25.001	3600	172.4
260	35.263	5078	243.1
280	49.286	7097	339.8
300	67.264	9686	463.8
350	134.73	19402	929.0
400	247.01	35570	1703.1
450	422.32	60814	2911.8
500	680.56	98001	4692.3
550	1045.0	150485	7205.3
600	1542.1	222066	10632.6
625	1851.2	266570	12763
650	2207.8	317922	15222
675	2618.7	377092	18055
700	3092.0	445243	21318

Saturation Vapor Pressure of some other Liquids at 68 ^o F or 20 ^o C

Saturation Vapor Pressure of some other Liquids at 68 ^o F or 20 ^o C
Liquid	Saturation Vapor Pressure
Liquid	[psi]	[Pa]
Carbon tetrachloride,CCl ₄	1.9	13100
Gasoline	8.0	55200
Mercury	0.000025	0.17

1 Pa = 10 ^-6 N/mm ² = 10 ^-5 bar = 0.1020 kp/m ² = 1.02x10 ^-4 m H ₂ O = 9.869x10 ^-6 atm = 1.45x10 ^-4 psi (lb _f /in ² )

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