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Dew Point ↔ RH ↔ Grains Converter
Enter a dry-bulb temperature and relative humidity to estimate dew point, humidity ratio and grains of moisture per pound of dry air (Magnus approximation, 101.325 kPa / sea level).
| Dew point | — °C | — °F |
|---|---|---|
| Humidity ratio | — g/kg dry air | |
| Moisture load | — grains/lb |
Below roughly −20 °C dew point you are in desiccant territory:
refrigerant cooling coils frost over and lose capacity, so a rotary desiccant wheel is the
practical way to reach that dryness.
Planning ESTIMATE only. Values use the Magnus formula at sea-level pressure and do not account for altitude, coil bypass, or process load. For an engineered figure, ask Koven Air to size a wheel to your target dew point.
Get an engineered wheel-sizing figure →
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