Temperature by Altitude Calculator

Temperature (°R) = Sea level temperature (°R) – [ 3.5662 x (altitude(feet) / 1000) ]
1 °C (Celsius) = { 1 °R(Rankine) – 491.67 } / 1.8
1 foot = 0.3048 m

Altitude (m) :
Sea Level Temperature (°C):

※Approximate formula based on the International Standard Atmosphere model. Valid only in the troposphere (below ~11 km).