Mean Radiant Temperature Calculator

Calculate mean radiant temperature (MRT) from surface temperatures and view factors.

Average wall temperature.
°F
Ceiling surface temperature.
°F
Floor surface temperature.
°F
Window/glass surface temperature.
°F
Fraction of surrounding area that is window (0-1).
ratio

Results

Mean Radiant Temperature-°F
Operative Temperature (@ 72°F air)-°F
Radiant Asymmetry-°F
References: ASHRAE Standard 55, Section 5.2 (Thermal Comfort Conditions); ISO 7726