Temperature + RH → wet bulb, dew point, and heat index together.
Last Updated: 02 Feb 2026
One place for wet bulb, dew point, and heat index from dry-bulb temperature and relative humidity. Wet bulb uses the Stull (2011) approximation.
Wet bulb: 64.009 °F · 17.783 °C
Dew point: 57.72 °F · 14.289 °C
Heat index: 77.543 °F · 25.302 °C
Heat index is most meaningful at about 80°F (27°C) and above; at lower temperatures it often tracks air temperature.
Wet Bulb / Dry Bulb & Psychrometrics helps you temperature + rh → wet bulb, dew point, and heat index together. It is commonly used by engineers, lab users, field operators for wet bulb calculator, dry bulb wet bulb, psychrometric calculator.
One set of inputs
Enter dry-bulb air temperature and relative humidity. The tool reports:
- **Wet-bulb** temperature (Stull 2011 approximation, °F and °C)
- **Dew point** (Magnus-type estimate)
- **Heat index** (“feels like”; same regression as our standalone heat index tool)
Useful for psychrometrics, cooling towers, data center environmental checks, and general weather literacy.