Comparison of temperature scales



Comparison of temperature scales
Comment Kelvin Celsius Fahrenheit Rankine Delisle Newton Réaumur Rømer
Absolute zero 0 −273.15 −459.67 0 559.725 −90.14 −218.52 −135.90375
Lowest recorded surface temperature on Earth
(Vostok, Antarctica - July 21, 1983) 		184 −89 −128.2 331.47 283.5 −29.37 −71.2 −39.225
Fahrenheit's ice/salt mixture 255.37 −17.78 0 459.67 176.67 −5.87 −14.22 −1.83
Ice melts (at standard pressure) 273.15 0 32 491.67 150 0 0 7.5
Average surface temperature on Earth 288 15 59 518.67 127.5 4.95 12 15.375
Average human body temperature ¹ 309.95 36.8 98.24 557.91 94.8 12.144 29.44 26.82
Highest recorded surface temperature on Earth
(Al 'Aziziyah, Libya - September 13, 1922) 		331 58 136.4 596.07 63 19.14 46.4 37.95
Water boils (at standard pressure) 373.1339 99.9839 211.97102 671.64102 0 33 80 60
Titanium melts 1941 1668 3034 3494 −2352 550 1334 883
The surface of the Sun 5800 5526 9980 10440 −8140 1823 4421 2909

¹ Normal human body temperature is 36.8 °C ±0.7 °C, or 98.2 °F ±1.3 °F. The commonly given value 98.6 °F is simply the exact conversion of the nineteenth-century German standard of 37 °C. Since it does not list an acceptable range, it could therefore be said to have excess (invalid) precision. Here's a list of various measurements.
Some numbers in this table have been rounded off.