Density of dry air vs temperature
Dry air at 1 atm from −50 to 300 °C — the ideal-gas density and Sutherland viscosity behind every duct, fan and drag calculation.
Density in kg/m³, from -50 to 300 °C. The chart and the table below are the same numbers; the table is the one you can copy.
Dry air — everything else at 20 °C (default)
| Dynamic viscosity | 0.018133 mPa·s |
| Specific heat | 1.0068 kJ/(kg·K) |
| Thermal conductivity | 0.025706 W/(m·K) |
Density by temperature
| Temperature (°C) | Density (kg/m³) |
|---|---|
| -50 | 1.5818 |
| -25 | 1.4225 |
| 0 | 1.2923 |
| 25 | 1.1839 |
| 50 | 1.0923 |
| 75 | 1.0139 |
| 100 | 0.94596 |
| 125 | 0.88656 |
| 150 | 0.83418 |
| 175 | 0.78765 |
| 200 | 0.74603 |
| 225 | 0.70859 |
| 250 | 0.67473 |
| 275 | 0.64395 |
| 300 | 0.61587 |
Ideal gas law with R = 287.0528 J/(kg·K); Sutherland (1893) viscosity; Incropera, Fundamentals of Heat and Mass Transfer, Table A.4 for cp and k · validated -50 to 300 °C · closed-form correlation, no interpolation table behind it