Altitude Temperature Calculator

Free calculate air temperature at any altitude using the standard atmospheric lapse rate for aviation and meteorology.

Input Parameters

Standard: 15°C (59°F)

Standard: 6.5°C/km (3.57°F/1000ft)

Results

Enter altitude and sea level temperature

Temperature Lapse Rate

Formula

T = T₀ - (L × h)

Where:

  • • T = temperature at altitude
  • • T₀ = sea level temperature
  • • L = lapse rate (°C/km)
  • • h = altitude (km)

Common Values

  • • Sea level (15°C): 15°C
  • • 1000 m: ~8.5°C
  • • 5000 m: ~-17.5°C
  • • 10000 m: ~-50°C

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