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Water - Boiling Points at Higher Pressures

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When water is heated it reach a temperature - the boiling point - at which the vapor pressure is large enough that bubbles are formed inside the water.  The boiling point of water depends on pressure.

Online Water Boiling Point Calculator

The calculator below can be used to calculate the water boiling point at given absolute pressures.
The output temperature is given as °C, °F, K and °R.

Note! Pressure must be within the ranges 1-220 bara, 14.7-3200 psia, 760-165 000 mm Hg or 30-6500 in Hg.

Choose the actual unit of pressure:


Boiling points of water at absolute pressures ranging from 1 to 70 bara or 14.7 to 1000 psia are indicated in the figures and tables 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 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 , Saturation pressure , Specific gravity , Specific heat (heat capacity) , Specific volume , Thermal conductivity , Thermal diffusivity and Vapour pressure at gas-liquid equilibrium .






Water Boiling Points at Higher Pressures
Absolute pressure Water boiling point
[bara]
[1x10 5 *Pa] 		[psia] [mm Hg] [in Hg] [°C] [°F]
1.013 14.7 760 29.92 100 212
1.034 15.0 776 30.54 101 213
1.103 16.0 827 32.58 102 216
1.172 17.0 879 34.61 104 219
1.241 18.0 931 36.65 106 222
1.310 19.0 983 38.68 107 225
1.379 20.0 1034 40.72 109 228
1.517 22.0 1138 44.79 112 233
1.655 24.0 1241 48.86 114 238
1.793 26.0 1345 52.94 117 242
1.931 28.0 1448 57.01 119 246
2.068 30.0 1551 61.08 121 250
2.206 32.0 1655 65.15 123 254
2.344 34.0 1758 69.22 125 258
2.482 36.0 1862 73.30 127 261
2.620 38.0 1965 77.37 129 264
2.758 40.0 2069 81.44 131 267
2.896 42.0 2172 85.51 132 270
3.034 44.0 2275 89.58 134 273
3.172 46.0 2379 93.66 135 276
3.309 48.0 2482 97.73 137 279
3.447 50.0 2586 101.8 138 281
3.585 52.0 2689 105.9 140 284
3.723 54.0 2793 109.9 141 286
3.861 56.0 2896 114.0 142 288
3.999 58.0 2999 118.1 144 291
4.137 60.0 3103 122.2 145 293
4.275 62.0 3206 126.2 146 295
4.413 64.0 3310 130.3 147 297
4.551 66.0 3413 134.4 148 299
4.688 68.0 3517 138.4 149 301
4.826 70.0 3620 142.5 151 303
4.964 72.0 3723 146.6 152 305
5.102 74.0 3827 150.7 153 307
5.240 76.0 3930 154.7 154 309
5.378 78.0 4034 158.8 155 310
5.516 80.0 4137 162.9 156 312
5.654 82.0 4241 167.0 157 314
5.792 84.0 4344 171.0 158 316
5.929 86.0 4447 175.1 158 317
6.067 88.0 4551 179.2 159 319
6.205 90.0 4654 183.2 160 320
6.343 92.0 4758 187.3 161 322
6.481 94.0 4861 191.4 162 323
6.619 96.0 4965 195.5 163 325
6.757 98.0 5068 199.5 164 326
6.895 100 5171 203.6 164 328
7.239 105 5430 213.8 166 331
7.584 110 5689 224.0 168 335
7.929 115 5947 234.1 170 338
8.274 120 6206 244.3 172 341
10.34 150 7757 305.4 181 359
12.07 175 9050 356.3 189 372
13.79 200 10343 407.2 194 382
15.51 225 11636 458.1 200 392
17.24 250 12929 509.0 205 401
18.96 275 14222 559.9 210 410
20.68 300 15514 610.8 214 417
22.41 325 16807 661.7 218 425
24.13 350 18100 712.6 222 432
25.86 375 19393 763.5 226 438
27.58 400 20686 814.4 229 445
29.30 425 21979 865.3 233 451
31.03 450 23272 916.2 236 456
32.75 475 24565 967.1 239 462
34.47 500 25857 1018 242 467
36.20 525 27150 1069 245 472
37.92 550 28443 1120 247 477
39.64 575 29736 1171 250 482
41.37 600 31029 1222 252 486
43.09 625 32322 1273 255 491
44.82 650 33615 1323 257 495
46.54 675 34908 1374 260 499
48.26 700 36200 1425 262 503
49.99 725 37493 1476 264 507
51.71 750 38786 1527 266 511
53.43 775 40079 1578 268 515
55.16 800 41372 1629 270 518
56.88 825 42665 1680 272 522
58.61 850 43958 1731 274 525
60.33 875 45251 1782 276 529
62.05 900 46543 1832 278 532
65.50 950 49129 1934 281 539
68.95 1000 51715 2036 285 545
75.06 1089 56301 2217 290 555
84.64 1228 63485 2499 298 570
98.78 1433 74091 2917 310 590
114.6 1662 85965 3384 321 610
127.9 1854 95895 3775 329 625
147.3 2136 110462 4349 341 645
163.3 2369 122493 4823 349 660
186.8 2710 140127 5517 360 680
213.5 3096 160131 6304 371 700
222.4 3226 166829 6568 374 706
  • T( o C) = 5/9[T( o F) - 32]
  • 1 psi (lb/in 2 ) = 6,894.76 Pa (N/m 2 ) = 0.068948 bar = 51.7149 mm Hg = 2.03602 in Hg

See Water and Heavy Water - for thermodynamic properties.
See also Water Density, specific weight and thermal expansion coefficient , Dynamic and kinematic viscosity , Enthalpy and entropy , Heat of Vaporization , Ionization Constant, pK w , of normal and heavy water , Pressure and Boiling Points , Specific gravity , Specific heat (heat capacity) and Specific volume for online calculatores, figures and tables.

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