Water Vapor Saturation Pressure: Data, Tables & Calculator

Calculate and reference water saturation pressure at given temperatures. The vapor pressure of water is the pressure at which water vapor is in thermodynamic equilibrium with its condensed state. At equilibrium, this is the saturation pressure. Data provided in multiple units (kPa, bar, atm, psi, psf) for temperatures from 0-370°C (32-700°F).

Temperature (°C)	Water Saturation Pressure (kPa)	Pressure (100*bar)	Pressure (atm)
0.01	0.61165	0.006	0.088712
2	0.70599	0.007	0.1024
4	0.81355	0.008	0.118
10	1.2282	0.0121	0.17814
14	1.599	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	4.247	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	12.73
100	101.42	1.001	14.71
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	4.7	69.061
160	618.23	6.1	89.667
180	1002.8	9.9	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

Temperature (°F)	Water Saturation Pressure (psi)	Pressure (psf)	Pressure (kPa)
32.02	0.088712	12.775	0.612
34	0.09624	13.858	0.664
39.2	0.118	16.991	0.814
40	0.1217	17.524	0.839
50	0.17814	25.651	1.228
60	0.25633	36.912	1.767
70	0.36341	52.33	2.506
80	0.50759	73.092	3.5
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	41.368
180	7.5196	1083	51.846
190	9.3495	1346	64.462
200	11.537	1661	79.547
212	14.71	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
400	247.01	35570	1703.1
450	422.32	60814	2911.8
500	680.56	98001	4692.3
550	1045	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	445243	21318

Liquid	Saturation Vapor Pressure (psi)	Saturation Vapor Pressure (Pa)
Carbon tetrachloride (CCl4)	1.9	13100
Gasoline	8	55200
Mercury	0.000025	0.17