Dry Air and Water Vapor - Density and Specific Volume vs. Temperature (Imperial)

Density and specific volume of dry air and water vapor at temperatures ranging 225 to 900 °F (107 to 482 °C) at atmospheric pressure (29.96 inches Mercury, 14.696 psia, 101.33 kPa).

Temperature (°F)	Temperature (°C)	Dry Air - Specific Volume (ft³/lb)	Dry Air - Density (lb/ft³)	Water Vapor - Specific Volume (ft³/lb)	Water Vapor - Density (lb/ft³)
225	107	17.2	0.0581	27.7	0.0361
250	121	17.8	0.0562	28.7	0.0349
275	135	18.5	0.0541	29.7	0.0337
300	149	19.1	0.0524	30.8	0.0325
325	163	19.7	0.0508	31.8	0.0314
350	177	20.3	0.0493	32.7	0.0306
375	191	21	0.0476	33.8	0.0296
400	204	21.6	0.0463	34.8	0.0287
450	232	22.8	0.0439	36.8	0.0272
500	260	24.1	0.0415	38.8	0.0258
600	316	26.6	0.0376	42.9	0.0233
700	371	29.1	0.0344	46.9	0.0213
800	427	31.6	0.0316	51	0.0196
900	482	34.1	0.0293	55	0.0182

Conversion Factors

Temperature: T (°F) = (T (°C)) × (9/5) + 32
Specific Volume: 1 ft³/lbm = 1728 in³/lbm = 7.48 U.S. gal/lbm = 62.43 liter/kg = 0.062 m³/kg
Density: 1 lb/ft³ = 16.018 kg/m³ = 0.016 g/cm³

Operating Conditions

Pressure: 29.96 inches Mercury (760 mm Mercury, 14.696 psia, 1.0333 kg/cm², 101.33 kPa)

Dry Air and Water Vapor - Density and Specific Volume vs. Temperature (Imperial) | MEPKit Engineering Tools | MEPKit