Water - Boiling Points at Vacuum Pressure

Calculator for water boiling points at varying vacuum pressures. Shows the relationship between absolute pressure and boiling point temperature across multiple pressure and temperature units (°C, °F, mbara, psia, mm Hg, in Hg, microns).

Absolute Pressure (μm Hg)	Absolute Pressure (Microns)	Vacuum (in Hg)	Vacuum (below atm)	Pressure (mbara)	Pressure (in Hg)	Pressure (mmHg)	Pressure (mbar)	Boiling Point (°C)	Boiling Point (°F)
760000	760000	29.92	0	1013.3	0	0	0	100	212
635000	635000	25	4.92	846.6	4.92	125	167	96	205
525526	525526	20.69	9.23	700.6	9.23	234.4	313	90	194
500000	500000	19.69	10.24	666.6	10.24	260.1	347	89	192
355092	355092	13.98	15.94	473.4	15.94	404.9	540	80	176
233680	233680	9.2	20.72	311.5	20.72	526.3	702	70	158
200000	200000	7.874	22.05	266.6	22.05	560.1	747	67	152
149352	149352	5.88	24.04	199.1	24.04	610.6	814	60	140
100000	100000	3.937	25.98	133.3	25.98	659.9	880	52	125
92456	92456	3.64	26.28	123.3	26.28	667.5	890	50	122
55118	55118	2.17	27.75	73.48	27.75	704.9	940	40	104
31750	31750	1.25	28.67	42.33	28.67	728.2	971	30	86
25400	25400	1	28.92	33.86	28.92	734.6	979	27	80
22860	22860	0.9	29.02	30.48	29.02	737.1	983	24	76
20320	20320	0.8	29.12	27.09	29.12	739.6	986	22	72
17780	17780	0.7	29.22	23.71	29.22	742.2	990	21	69
15240	15240	0.6	29.32	20.32	29.32	744.7	993	18	64
12700	12700	0.5	29.42	16.93	29.42	747.3	996	15	59
10160	10160	0.4	29.52	13.55	29.52	749.8	1000	12	53
7620	7620	0.3	29.62	10.16	29.62	752.3	1003	7	45
4572	4572	0.18	29.74	6.1	29.74	755.4	1007	0	32
2540	2540	0.1	29.82	3.39	29.82	757.4	1009.82	-6	21
1270	1270	0.05	29.87	1.69	29.87	758.7	1011.51	-14	6
1000	1000	0.039	29.88	1.33	29.88	759	1011.85	-17	1
500	500	0.02	29.9	0.67	29.9	759.5	1012.53	-24	-12
300	300	0.012	29.91	0.4	29.91	759.7	1012.87	-29	-21
254	254	0.01	29.91	0.34	29.91	759.7	1012.87	-31	-24
127	127	0.005	29.92	0.17	29.92	759.8	1013.04	-37	-35
100	100	0.0039	29.92	0.13	29.92	760	1013.21	-40	-40
50	50	0.002	29.92	0.07	29.92	760	1013.21	-46	-50
25.4	25.4	0.001	29.919	0.03	29.919	759.9	1013.17	-51	-60
12.7	12.7	0.0005	29.9195	0.017	29.9195	760	1013.19	-57	-70
2.54	2.54	0.0001	29.9199	0.003	29.9199	760	1013.2	-68	-90