Dew Point Calculator — Comfort Scale, HVAC Mold Prevention & Fog
Calculate the dew point from temperature and relative humidity using the Magnus formula. Free online calculator with formula guide and step-by-step results.
Dew Point Calculator
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Dew Point (°F)
60.2°F
Dew Point (°C)
15.6°C
Relative Humidity
60%
Temperature
75°F
Comfort Level
▲ Slightly humid
{"dewPointF":60.15601380361296,"dewPointC":15.642229890896086,"temperature":75,"humidity":60,"comfortLabel":"Slightly humid","comfortDescription":"The air feels slightly humid. Barely noticeable."}
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Dew Point
60.2°F
15.6°C
Slightly Humid
Human Comfort Scale
Slightly Humid
The air feels slightly humid. Barely noticeable.
Temperature
75°F
Humidity
60%
Dew Point (°F)
60.2°F
Dew Point (°C)
15.6°C
Comfort Level
Slightly humid
HVAC Relevance
For optimal indoor comfort and health, HVAC systems should maintain an indoor dew point between 45-55°F (approximately 30-50% relative humidity at 70°F). Dew points above 60°F indoors can promote mold growth, dust mite proliferation, and respiratory issues. If the outdoor dew point is very high, a properly sized air conditioning system with adequate dehumidification is essential. Consider a whole-house dehumidifier in humid climates.
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