Online Celsius (CELSIUS EQUALS), Fahrenheit (FAHENHEIT EQUALS), Kelvin (KELVIN EQUALS), Ranchine (RANKINE EQUALS), Reaumur EQUALS (REAUMUR EQUALS) fem slags temperaturenheder til måling af den gensidige overførsel af udveksling
K=5/9(°F+459.67) K = ℃+273.15
n°F= [(n-32)×5/9]℃ n℃= (9/5×n+32)°F 1℃= 9/5°F+32°F 1°F=5/9℃-32×5/9℃
F = 9/5C + 32, eller C = 5/9 (F-32)