Steam Tables in US Units (°F, psia, BTU/lb)
The same IAPWS-IF97 steam properties in °F, psia, BTU/lb and ft³/lb, converted with exact factors, for US boiler, steam-plant and HVAC work.
Standards and method
Every property is calculated with IAPWS-IF97 in SI units and converted with exact factors; the IF97 verification values are checked in the site tests.
Maintained by Miguel Coelho. Updated . See our editorial policy.
Printable steam tables in US units
Saturated and superheated steam in °F, psia, BTU/lb and ft³/lb (IAPWS-IF97). Includes the exact definition, formulas, a worked example and sources. Conversion values are checked against the defining constants, and reference data is cited to its source, before the PDF is published.
Free to print, share and use in teaching materials with attribution (CC BY 4.0).
Also in the Pipe and Plant Engineering Reference Pack, with related sheets in one PDF.
Full steam tables in US units
Saturated and superheated steam in °F, psia, BTU/lb and ft³/lb (IAPWS-IF97). These are the same tables as the printable PDF. For: US mechanical and process engineers, boiler and steam-plant operators, HVAC engineers and students.
- Basis
- IAPWS-IF97, converted exactly: 1 BTU/lb = 2.326 kJ/kg; 1 BTU/(lb·°R) = 4.1868 kJ/(kg·K)
- Key relationship
- hfg = hg − hf; wet steam h = hf + x × hfg
- Reading the table
- psig = psia − 14.696; dryness x = (h − hf) ÷ hfg
- Worked example
- At 14.696 psia: Tsat = 211.95 °F, hfg = 970.1 BTU/lb
- Rounding
- Pressures are absolute (psia). Same reference state as the SI tables (hf ≈ 0 at 32.018 °F). Critical point 705.10 °F, 3,200.1 psia.
Saturated steam by temperature (°F)
| T (°F) | p (psia) | vf (ft³/lb) | vg (ft³/lb) | hf (BTU/lb) | hfg (BTU/lb) | hg (BTU/lb) | sf (BTU/lb·°R) | sg (BTU/lb·°R) |
|---|---|---|---|---|---|---|---|---|
| 32.018 | 0.088713 | 0.01602 | 3,299.8 | 0.00 | 1,075.20 | 1,075.20 | 0.0000 | 2.1868 |
| 35 | 0.099981 | 0.01602 | 2,945.5 | 3.00 | 1,073.50 | 1,076.51 | 0.0061 | 2.1762 |
| 40 | 0.12173 | 0.01602 | 2,443.4 | 8.03 | 1,070.67 | 1,078.70 | 0.0162 | 2.1590 |
| 45 | 0.14757 | 0.01602 | 2,035.6 | 13.05 | 1,067.84 | 1,080.89 | 0.0262 | 2.1421 |
| 50 | 0.17813 | 0.01602 | 1,702.9 | 18.07 | 1,065.01 | 1,083.07 | 0.0361 | 2.1257 |
| 60 | 0.25639 | 0.01603 | 1,206.1 | 28.08 | 1,059.36 | 1,087.44 | 0.0555 | 2.0941 |
| 70 | 0.36334 | 0.01605 | 867.19 | 38.08 | 1,053.71 | 1,091.78 | 0.0746 | 2.0640 |
| 80 | 0.50744 | 0.01607 | 632.44 | 48.07 | 1,048.04 | 1,096.11 | 0.0933 | 2.0353 |
| 90 | 0.69899 | 0.01610 | 467.45 | 58.05 | 1,042.37 | 1,100.43 | 0.1116 | 2.0080 |
| 100 | 0.95044 | 0.01613 | 349.87 | 68.04 | 1,036.68 | 1,104.71 | 0.1296 | 1.9819 |
| 110 | 1.2766 | 0.01617 | 264.99 | 78.02 | 1,030.96 | 1,108.98 | 0.1473 | 1.9570 |
| 120 | 1.6949 | 0.01620 | 202.96 | 88.00 | 1,025.22 | 1,113.22 | 0.1647 | 1.9333 |
| 130 | 2.2258 | 0.01625 | 157.10 | 97.99 | 1,019.44 | 1,117.43 | 0.1817 | 1.9106 |
| 140 | 2.8929 | 0.01629 | 122.82 | 107.98 | 1,013.62 | 1,121.60 | 0.1985 | 1.8888 |
| 150 | 3.7231 | 0.01634 | 96.934 | 117.97 | 1,007.77 | 1,125.74 | 0.2151 | 1.8680 |
| 160 | 4.7472 | 0.01639 | 77.186 | 127.98 | 1,001.86 | 1,129.83 | 0.2313 | 1.8481 |
| 170 | 5.9998 | 0.01645 | 61.982 | 137.99 | 995.90 | 1,133.89 | 0.2474 | 1.8290 |
| 180 | 7.5196 | 0.01651 | 50.171 | 148.01 | 989.87 | 1,137.89 | 0.2631 | 1.8106 |
| 190 | 9.3497 | 0.01657 | 40.918 | 158.05 | 983.78 | 1,141.83 | 0.2787 | 1.7930 |
| 200 | 11.538 | 0.01663 | 33.611 | 168.10 | 977.62 | 1,145.71 | 0.2940 | 1.7760 |
| 212 | 14.709 | 0.01671 | 26.781 | 180.18 | 970.11 | 1,150.29 | 0.3122 | 1.7565 |
| 220 | 17.201 | 0.01677 | 23.135 | 188.25 | 965.03 | 1,153.28 | 0.3241 | 1.7440 |
| 230 | 20.795 | 0.01684 | 19.373 | 198.35 | 958.60 | 1,156.95 | 0.3388 | 1.7288 |
| 240 | 24.985 | 0.01692 | 16.316 | 208.47 | 952.06 | 1,160.54 | 0.3534 | 1.7141 |
| 250 | 29.843 | 0.01700 | 13.816 | 218.62 | 945.41 | 1,164.03 | 0.3678 | 1.7000 |
| 260 | 35.445 | 0.01708 | 11.760 | 228.79 | 938.65 | 1,167.44 | 0.3820 | 1.6862 |
| 270 | 41.874 | 0.01717 | 10.059 | 238.99 | 931.75 | 1,170.73 | 0.3960 | 1.6730 |
| 280 | 49.218 | 0.01726 | 8.6442 | 249.21 | 924.71 | 1,173.92 | 0.4099 | 1.6601 |
| 290 | 57.567 | 0.01735 | 7.4610 | 259.47 | 917.53 | 1,177.00 | 0.4236 | 1.6476 |
| 300 | 67.021 | 0.01745 | 6.4666 | 269.76 | 910.20 | 1,179.96 | 0.4372 | 1.6354 |
| 320 | 89.654 | 0.01765 | 4.9148 | 290.44 | 895.04 | 1,185.48 | 0.4640 | 1.6120 |
| 340 | 118.00 | 0.01787 | 3.7888 | 311.30 | 879.15 | 1,190.45 | 0.4903 | 1.5897 |
| 360 | 153.00 | 0.01811 | 2.9582 | 332.34 | 862.47 | 1,194.81 | 0.5162 | 1.5684 |
| 380 | 195.71 | 0.01836 | 2.3363 | 353.59 | 844.91 | 1,198.50 | 0.5416 | 1.5478 |
| 400 | 247.22 | 0.01864 | 1.8640 | 375.10 | 826.37 | 1,201.46 | 0.5667 | 1.5280 |
| 420 | 308.71 | 0.01894 | 1.5007 | 396.89 | 806.73 | 1,203.62 | 0.5915 | 1.5086 |
| 440 | 381.44 | 0.01926 | 1.2179 | 419.01 | 785.88 | 1,204.88 | 0.6161 | 1.4896 |
| 460 | 466.71 | 0.01962 | 0.99515 | 441.50 | 763.66 | 1,205.17 | 0.6405 | 1.4709 |
| 480 | 565.92 | 0.02001 | 0.81796 | 464.44 | 739.92 | 1,204.36 | 0.6648 | 1.4522 |
| 500 | 680.53 | 0.02044 | 0.67559 | 487.89 | 714.45 | 1,202.34 | 0.6890 | 1.4335 |
| 520 | 812.08 | 0.02092 | 0.56010 | 511.93 | 687.01 | 1,198.94 | 0.7133 | 1.4145 |
| 540 | 962.23 | 0.02146 | 0.46555 | 536.69 | 657.29 | 1,193.98 | 0.7377 | 1.3952 |
| 560 | 1,132.7 | 0.02208 | 0.38745 | 562.29 | 624.90 | 1,187.19 | 0.7624 | 1.3752 |
| 580 | 1,325.4 | 0.02279 | 0.32233 | 588.95 | 589.28 | 1,178.23 | 0.7875 | 1.3543 |
| 600 | 1,542.5 | 0.02363 | 0.26747 | 616.93 | 549.69 | 1,166.62 | 0.8133 | 1.3320 |
| 620 | 1,786.1 | 0.02465 | 0.22071 | 646.62 | 504.99 | 1,151.61 | 0.8400 | 1.3077 |
| 640 | 2,059.2 | 0.02593 | 0.18023 | 678.69 | 453.26 | 1,131.95 | 0.8683 | 1.2804 |
| 660 | 2,364.8 | 0.02766 | 0.14437 | 714.47 | 390.86 | 1,105.33 | 0.8991 | 1.2482 |
| 680 | 2,707.3 | 0.03035 | 0.11125 | 757.31 | 309.33 | 1,066.63 | 0.9354 | 1.2068 |
| 700 | 3,092.9 | 0.03684 | 0.074668 | 823.71 | 166.94 | 990.65 | 0.9911 | 1.1350 |
Saturated steam by pressure (psia)
| p (psia) | p (psig) | T (°F) | vf (ft³/lb) | vg (ft³/lb) | hf (BTU/lb) | hfg (BTU/lb) | hg (BTU/lb) | sf (BTU/lb·°R) | sg (BTU/lb·°R) |
|---|---|---|---|---|---|---|---|---|---|
| 0.5 | — | 79.55 | 0.01607 | 641.32 | 47.62 | 1,048.30 | 1,095.92 | 0.0925 | 2.0366 |
| 1 | — | 101.69 | 0.01614 | 333.51 | 69.73 | 1,035.71 | 1,105.44 | 0.1326 | 1.9776 |
| 1.5 | — | 115.64 | 0.01619 | 227.68 | 83.65 | 1,027.72 | 1,111.37 | 0.1571 | 1.9435 |
| 2 | — | 126.03 | 0.01623 | 173.72 | 94.02 | 1,021.74 | 1,115.76 | 0.1750 | 1.9195 |
| 3 | — | 141.42 | 0.01630 | 118.70 | 109.39 | 1,012.80 | 1,122.19 | 0.2009 | 1.8858 |
| 4 | — | 152.91 | 0.01636 | 90.628 | 120.89 | 1,006.05 | 1,126.94 | 0.2198 | 1.8621 |
| 5 | — | 162.18 | 0.01641 | 73.523 | 130.16 | 1,000.56 | 1,130.72 | 0.2349 | 1.8438 |
| 6 | — | 170.00 | 0.01645 | 61.979 | 137.99 | 995.90 | 1,133.89 | 0.2474 | 1.8290 |
| 8 | — | 182.81 | 0.01652 | 47.345 | 150.83 | 988.17 | 1,139.00 | 0.2675 | 1.8056 |
| 10 | — | 193.16 | 0.01659 | 38.423 | 161.22 | 981.84 | 1,143.06 | 0.2836 | 1.7875 |
| 14.696 | 0 | 211.95 | 0.01671 | 26.804 | 180.13 | 970.14 | 1,150.27 | 0.3121 | 1.7566 |
| 15 | 0.304 | 212.99 | 0.01672 | 26.295 | 181.18 | 969.48 | 1,150.66 | 0.3137 | 1.7549 |
| 20 | 5.304 | 227.92 | 0.01683 | 20.092 | 196.25 | 959.95 | 1,156.19 | 0.3358 | 1.7319 |
| 25 | 10.304 | 240.03 | 0.01692 | 16.306 | 208.51 | 952.04 | 1,160.55 | 0.3534 | 1.7141 |
| 30 | 15.304 | 250.30 | 0.01700 | 13.748 | 218.93 | 945.21 | 1,164.14 | 0.3682 | 1.6995 |
| 35 | 20.304 | 259.25 | 0.01708 | 11.900 | 228.03 | 939.15 | 1,167.19 | 0.3809 | 1.6873 |
| 40 | 25.304 | 267.22 | 0.01715 | 10.500 | 236.15 | 933.68 | 1,169.83 | 0.3921 | 1.6766 |
| 45 | 30.304 | 274.42 | 0.01721 | 9.4023 | 243.50 | 928.66 | 1,172.16 | 0.4022 | 1.6672 |
| 50 | 35.304 | 280.99 | 0.01727 | 8.5171 | 250.23 | 924.01 | 1,174.24 | 0.4113 | 1.6588 |
| 60 | 45.304 | 292.69 | 0.01738 | 7.1762 | 262.24 | 915.57 | 1,177.81 | 0.4273 | 1.6443 |
| 70 | 55.304 | 302.92 | 0.01748 | 6.2071 | 272.76 | 908.03 | 1,180.79 | 0.4412 | 1.6319 |
| 80 | 65.304 | 312.03 | 0.01757 | 5.4730 | 282.18 | 901.16 | 1,183.34 | 0.4534 | 1.6212 |
| 90 | 75.304 | 320.27 | 0.01766 | 4.8969 | 290.73 | 894.82 | 1,185.55 | 0.4644 | 1.6117 |
| 100 | 85.304 | 327.82 | 0.01774 | 4.4324 | 298.57 | 888.92 | 1,187.49 | 0.4744 | 1.6032 |
| 110 | 95.304 | 334.78 | 0.01781 | 4.0496 | 305.84 | 883.37 | 1,189.21 | 0.4835 | 1.5954 |
| 120 | 105.304 | 341.26 | 0.01789 | 3.7286 | 312.62 | 878.12 | 1,190.74 | 0.4920 | 1.5883 |
| 130 | 115.304 | 347.33 | 0.01796 | 3.4554 | 318.98 | 873.14 | 1,192.12 | 0.4998 | 1.5818 |
| 140 | 125.304 | 353.04 | 0.01802 | 3.2199 | 324.99 | 868.37 | 1,193.37 | 0.5072 | 1.5757 |
| 150 | 135.304 | 358.44 | 0.01809 | 3.0148 | 330.68 | 863.81 | 1,194.49 | 0.5141 | 1.5700 |
| 160 | 145.304 | 363.55 | 0.01815 | 2.8345 | 336.10 | 859.42 | 1,195.52 | 0.5207 | 1.5647 |
| 180 | 165.304 | 373.08 | 0.01827 | 2.5320 | 346.21 | 851.09 | 1,197.30 | 0.5328 | 1.5549 |
| 200 | 185.304 | 381.81 | 0.01839 | 2.2880 | 355.53 | 843.27 | 1,198.80 | 0.5439 | 1.5460 |
| 225 | 210.304 | 391.81 | 0.01852 | 2.0422 | 366.26 | 834.08 | 1,200.34 | 0.5565 | 1.5360 |
| 250 | 235.304 | 400.98 | 0.01865 | 1.8439 | 376.16 | 825.43 | 1,201.59 | 0.5679 | 1.5270 |
| 275 | 260.304 | 409.46 | 0.01878 | 1.6805 | 385.37 | 817.22 | 1,202.59 | 0.5785 | 1.5187 |
| 300 | 285.304 | 417.37 | 0.01890 | 1.5434 | 394.00 | 809.38 | 1,203.38 | 0.5883 | 1.5111 |
| 350 | 335.304 | 431.75 | 0.01913 | 1.3262 | 409.84 | 794.63 | 1,204.47 | 0.6060 | 1.4974 |
| 400 | 385.304 | 444.63 | 0.01934 | 1.1616 | 424.18 | 780.87 | 1,205.04 | 0.6217 | 1.4853 |
| 450 | 435.304 | 456.32 | 0.01955 | 1.0324 | 437.33 | 767.87 | 1,205.19 | 0.6360 | 1.4743 |
| 500 | 485.304 | 467.05 | 0.01975 | 0.92815 | 449.53 | 755.48 | 1,205.02 | 0.6490 | 1.4643 |
| 600 | 585.304 | 486.25 | 0.02014 | 0.77016 | 471.71 | 732.16 | 1,203.87 | 0.6723 | 1.4464 |
| 700 | 685.304 | 503.14 | 0.02051 | 0.65587 | 491.62 | 710.29 | 1,201.90 | 0.6928 | 1.4305 |
| 800 | 785.304 | 518.27 | 0.02088 | 0.56918 | 509.83 | 689.47 | 1,199.30 | 0.7112 | 1.4162 |
| 900 | 885.304 | 532.02 | 0.02124 | 0.50107 | 526.72 | 669.44 | 1,196.16 | 0.7279 | 1.4030 |
| 1,000 | 985.304 | 544.65 | 0.02160 | 0.44606 | 542.56 | 650.01 | 1,192.57 | 0.7434 | 1.3906 |
| 1,200 | 1,185.304 | 567.26 | 0.02233 | 0.36247 | 571.84 | 612.37 | 1,184.21 | 0.7714 | 1.3677 |
| 1,400 | 1,385.304 | 587.14 | 0.02307 | 0.30169 | 598.77 | 575.65 | 1,174.42 | 0.7966 | 1.3465 |
| 1,600 | 1,585.304 | 604.93 | 0.02386 | 0.25525 | 624.07 | 539.20 | 1,163.27 | 0.8197 | 1.3262 |
| 1,800 | 1,785.304 | 621.07 | 0.02471 | 0.21840 | 648.27 | 502.42 | 1,150.69 | 0.8415 | 1.3063 |
| 2,000 | 1,985.304 | 635.85 | 0.02563 | 0.18819 | 671.80 | 464.70 | 1,136.50 | 0.8622 | 1.2864 |
| 2,500 | 2,485.304 | 668.17 | 0.02859 | 0.13067 | 730.78 | 360.75 | 1,091.53 | 0.9130 | 1.2329 |
| 3,000 | 2,985.304 | 695.41 | 0.03438 | 0.084525 | 802.90 | 213.56 | 1,016.46 | 0.9736 | 1.1585 |
Superheated steam: enthalpy h (BTU/lb)
Rows: temperature (°F). Columns: absolute pressure; the first row is the saturation temperature (°F). — = liquid at that pressure.
| T | 1 psia | 14.696 psia | 50 psia | 100 psia | 150 psia | 200 psia | 300 psia | 500 psia | 1,000 psia | 2,000 psia |
|---|---|---|---|---|---|---|---|---|---|---|
| Tsat | 101.7 | 212.0 | 281.0 | 327.8 | 358.4 | 381.8 | 417.4 | 467.0 | 544.7 | 635.9 |
| 200 | 1,150.1 | — | — | — | — | — | — | — | — | — |
| 300 | 1,195.7 | 1,192.7 | 1,184.5 | — | — | — | — | — | — | — |
| 400 | 1,241.8 | 1,240.0 | 1,235.1 | 1,227.8 | 1,219.7 | 1,210.9 | — | — | — | — |
| 500 | 1,288.6 | 1,287.4 | 1,284.1 | 1,279.3 | 1,274.3 | 1,269.1 | 1,257.9 | 1,231.9 | — | — |
| 600 | 1,336.2 | 1,335.3 | 1,332.9 | 1,329.5 | 1,325.9 | 1,322.3 | 1,314.8 | 1,298.6 | 1,249.3 | — |
| 700 | 1,384.6 | 1,383.9 | 1,382.1 | 1,379.4 | 1,376.8 | 1,374.1 | 1,368.5 | 1,357.0 | 1,324.9 | 1,239.7 |
| 800 | 1,433.9 | 1,433.3 | 1,431.9 | 1,429.8 | 1,427.7 | 1,425.5 | 1,421.2 | 1,412.4 | 1,389.0 | 1,334.3 |
| 900 | 1,484.1 | 1,483.6 | 1,482.4 | 1,480.7 | 1,479.0 | 1,477.3 | 1,473.8 | 1,466.8 | 1,448.5 | 1,408.5 |
| 1000 | 1,535.1 | 1,534.7 | 1,533.8 | 1,532.3 | 1,530.9 | 1,529.5 | 1,526.7 | 1,520.9 | 1,506.2 | 1,474.9 |
| 1100 | 1,587.1 | 1,586.8 | 1,586.0 | 1,584.8 | 1,583.6 | 1,582.4 | 1,580.0 | 1,575.3 | 1,563.0 | 1,537.6 |
| 1200 | 1,640.0 | 1,639.8 | 1,639.1 | 1,638.1 | 1,637.1 | 1,636.1 | 1,634.0 | 1,630.0 | 1,619.7 | 1,598.6 |
| 1300 | 1,693.9 | 1,693.7 | 1,693.1 | 1,692.2 | 1,691.4 | 1,690.5 | 1,688.8 | 1,685.3 | 1,676.6 | 1,658.7 |
| 1400 | 1,748.7 | 1,748.5 | 1,748.0 | 1,747.2 | 1,746.5 | 1,745.8 | 1,744.3 | 1,741.3 | 1,733.7 | 1,718.4 |
Superheated steam: entropy s (BTU/lb·°R)
| T | 1 psia | 14.696 psia | 50 psia | 100 psia | 150 psia | 200 psia | 300 psia | 500 psia | 1,000 psia | 2,000 psia |
|---|---|---|---|---|---|---|---|---|---|---|
| Tsat | 101.7 | 212.0 | 281.0 | 327.8 | 358.4 | 381.8 | 417.4 | 467.0 | 544.7 | 635.9 |
| 200 | 2.0510 | — | — | — | — | — | — | — | — | — |
| 300 | 2.1152 | 1.8160 | 1.6724 | — | — | — | — | — | — | — |
| 400 | 2.1723 | 1.8744 | 1.7352 | 1.6521 | 1.6001 | 1.5602 | — | — | — | — |
| 500 | 2.2238 | 1.9266 | 1.7891 | 1.7089 | 1.6602 | 1.6243 | 1.5706 | 1.4928 | — | — |
| 600 | 2.2710 | 1.9741 | 1.8374 | 1.7586 | 1.7114 | 1.6771 | 1.6271 | 1.5591 | 1.4457 | — |
| 700 | 2.3146 | 2.0179 | 1.8818 | 1.8037 | 1.7573 | 1.7238 | 1.6756 | 1.6117 | 1.5140 | 1.3783 |
| 800 | 2.3554 | 2.0588 | 1.9229 | 1.8453 | 1.7994 | 1.7664 | 1.7191 | 1.6576 | 1.5670 | 1.4567 |
| 900 | 2.3937 | 2.0972 | 1.9615 | 1.8842 | 1.8386 | 1.8059 | 1.7593 | 1.6991 | 1.6125 | 1.5134 |
| 1000 | 2.4299 | 2.1335 | 1.9980 | 1.9209 | 1.8754 | 1.8430 | 1.7968 | 1.7375 | 1.6535 | 1.5606 |
| 1100 | 2.4644 | 2.1680 | 2.0326 | 1.9556 | 1.9103 | 1.8780 | 1.8322 | 1.7735 | 1.6911 | 1.6022 |
| 1200 | 2.4973 | 2.2009 | 2.0656 | 1.9887 | 1.9435 | 1.9114 | 1.8657 | 1.8076 | 1.7264 | 1.6401 |
| 1300 | 2.5288 | 2.2324 | 2.0972 | 2.0204 | 1.9753 | 1.9432 | 1.8978 | 1.8399 | 1.7596 | 1.6752 |
| 1400 | 2.5591 | 2.2627 | 2.1275 | 2.0508 | 2.0058 | 1.9738 | 1.9284 | 1.8708 | 1.7912 | 1.7083 |
Superheated steam: specific volume v (ft³/lb)
| T | 1 psia | 14.696 psia | 50 psia | 100 psia | 150 psia | 200 psia | 300 psia | 500 psia | 1,000 psia | 2,000 psia |
|---|---|---|---|---|---|---|---|---|---|---|
| Tsat | 101.7 | 212.0 | 281.0 | 327.8 | 358.4 | 381.8 | 417.4 | 467.0 | 544.7 | 635.9 |
| 200 | 392.5 | — | — | — | — | — | — | — | — | — |
| 300 | 452.3 | 30.53 | 8.774 | — | — | — | — | — | — | — |
| 400 | 511.9 | 34.67 | 10.06 | 4.936 | 3.222 | 2.361 | — | — | — | — |
| 500 | 571.5 | 38.77 | 11.31 | 5.588 | 3.680 | 2.725 | 1.767 | 0.9930 | — | — |
| 600 | 631.1 | 42.86 | 12.53 | 6.216 | 4.111 | 3.058 | 2.005 | 1.159 | 0.5143 | — |
| 700 | 690.7 | 46.93 | 13.74 | 6.834 | 4.531 | 3.379 | 2.227 | 1.304 | 0.6085 | 0.2489 |
| 800 | 750.3 | 51.00 | 14.95 | 7.446 | 4.944 | 3.693 | 2.442 | 1.441 | 0.6883 | 0.3076 |
| 900 | 809.9 | 55.07 | 16.15 | 8.053 | 5.353 | 4.003 | 2.653 | 1.572 | 0.7614 | 0.3539 |
| 1000 | 869.5 | 59.13 | 17.35 | 8.658 | 5.759 | 4.310 | 2.861 | 1.701 | 0.8308 | 0.3948 |
| 1100 | 929.1 | 63.19 | 18.55 | 9.260 | 6.163 | 4.615 | 3.066 | 1.827 | 0.8978 | 0.4327 |
| 1200 | 988.6 | 67.25 | 19.75 | 9.862 | 6.566 | 4.918 | 3.270 | 1.952 | 0.9632 | 0.4686 |
| 1300 | 1,048 | 71.31 | 20.94 | 10.46 | 6.968 | 5.221 | 3.473 | 2.076 | 1.028 | 0.5033 |
| 1400 | 1,108 | 75.36 | 22.14 | 11.06 | 7.369 | 5.522 | 3.676 | 2.199 | 1.091 | 0.5370 |
Sources for this chart
Every property is calculated with IAPWS-IF97 in SI units and converted with exact factors; the IF97 verification values are checked in the site tests.
- IAPWS-IF97 (IAPWS R7-97, 2012 revision) — Industrial formulation for the thermodynamic properties of water and steam; reference state u = s = 0 for saturated liquid at the triple point
- IAPWS R2-83 (2012) — Critical point of water: 647.096 K (373.946 °C), 22.064 MPa, 322 kg/m³
- CoolProp 8.0 (Bell et al., Ind. Eng. Chem. Res. 2014) — Open-source property library used to evaluate IF97 and the refrigerant equations of state
- NIST Special Publication 811 — Conversion factors; BTU is the International Table BTU (1055.055 852 62 J)
Related Converters & Charts
Steam Tables in US Units (°F, psia, BTU/lb) FAQs
Common questions about the steam tables in US units.
What is the enthalpy of steam at 100 psig?
100 psig is 114.7 psia. Use the saturated-by-pressure table: at 100 psia steam saturates at 327.8 °F with hg = 1,187.5 BTU/lb; read between the 110 and 120 psia rows for 114.7 psia.
What is the latent heat of steam at 212 °F?
At 14.696 psia water boils at 211.95 °F and hfg is 970.1 BTU/lb.
What is the difference between psia and psig?
psia is absolute pressure; psig is gauge pressure above the atmosphere. At sea level psia = psig + 14.696. Steam tables use psia.
Can I download this chart as a PDF, CSV, or JSON?
Yes. Use the Download A4 PDF or US Letter PDF buttons for a printable version, or download the same tables as CSV or JSON from the links on this page.