Temperature conversion formulas

Encyclopedia : T : TE : TEM : Temperature conversion formulas

Contents

1 Comparison of temperature scales
2
3
4
5
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10 See also
11 External links

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	−135.90
Coldest 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
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
(Al 'Aziziyah>Al 'Aziziyah, Libya - September 13, 1922)	331	58	136.4	596.07	63	19.14	46.4	37.95
standard pressure)	373.15	100	212	671.67	0	33	80	60
Titanium melts	1941	1668	3034	3494	−2352	550	1334	883
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.

Kelvin
Celsius [°C] = [K] − 273.15 [K] = [°C] + 273.15
Fahrenheit [°F] = [K] · 9/5 − 459.67 [K] = ([°F] + 459.67) · 5/9
Rankine [°Ra] = [K] · 9/5 [K] = [°Ra] · 5/9
Réaumur [°Ré] = ([K] − 273.15) · 4/5 [K] = [°Ré] · 5/4 + 273.15
Newton [°N] = ([K] − 273.15) · 33/100 [K] = [°N] · 100/33 + 273.15
Rømer [°Rø] = ([K] − 273.15) · 21/40 + 7.5 [K] = ([°Rø] − 7.5) · 40/21 + 273.15
Delisle [°De] = (373.15 − [K]) · 3/2 [K] = 373.15 − [°De] · 2/3

Kelvin
Celsius	[°C] = [K] − 273.15	[K] = [°C] + 273.15
Fahrenheit	[°F] = [K] · 9/5 − 459.67	[K] = ([°F] + 459.67) · 5/9
Rankine	[°Ra] = [K] · 9/5	[K] = [°Ra] · 5/9
Réaumur	[°Ré] = ([K] − 273.15) · 4/5	[K] = [°Ré] · 5/4 + 273.15
Newton	[°N] = ([K] − 273.15) · 33/100	[K] = [°N] · 100/33 + 273.15
Rømer	[°Rø] = ([K] − 273.15) · 21/40 + 7.5	[K] = ([°Rø] − 7.5) · 40/21 + 273.15
Delisle	[°De] = (373.15 − [K]) · 3/2	[K] = 373.15 − [°De] · 2/3

Degree Celsius
Kelvin [K] = [°C] + 273.15 [°C] = [K] − 273.15
Fahrenheit [°F] = [°C] · 9/5 + 32 [°C] = ([°F] − 32) · 5/9
Rankine [°Ra] = [°C] · 9/5 + 491.67 [°C] = ([°Ra] − 491.67) · 5/9
Réaumur [°Ré] = [°C] · 4/5 [°C] = [°Ré] · 5/4
Newton [°N] = [°C] · 33/100 [°C] = [°N] · 100/33
Rømer [°Rø] = [°C] · 21/40 + 7.5 [°C] = ([°Rø] − 7.5) · 40/21
Delisle [°De] = (100 − [°C]) · 3/2 [°C] = 100 − [°De] · 2/3

Degree Celsius
Kelvin	[K] = [°C] + 273.15	[°C] = [K] − 273.15
Fahrenheit	[°F] = [°C] · 9/5 + 32	[°C] = ([°F] − 32) · 5/9
Rankine	[°Ra] = [°C] · 9/5 + 491.67	[°C] = ([°Ra] − 491.67) · 5/9
Réaumur	[°Ré] = [°C] · 4/5	[°C] = [°Ré] · 5/4
Newton	[°N] = [°C] · 33/100	[°C] = [°N] · 100/33
Rømer	[°Rø] = [°C] · 21/40 + 7.5	[°C] = ([°Rø] − 7.5) · 40/21
Delisle	[°De] = (100 − [°C]) · 3/2	[°C] = 100 − [°De] · 2/3

Degree Fahrenheit
Kelvin [K] = ([°F] + 459.67) · 5/9 [°F] = [K] · 9/5 − 459.67
Celsius [°C] = ([°F] − 32) · 5/9 [°F] = [°C] · 9/5 + 32
Rankine [°Ra] = [°F] + 459.67 [°F] = [°Ra] − 459.67
Réaumur [°Ré] = ([°F] − 32) · 4/9 [°F] = [°Ré] · 9/4 + 32
Newton [°N] = ([°F] − 32) · 11/60 [°F] = [°N] · 60/11 + 32
Rømer [°Rø] = ([°F] − 32) · 7/24 + 7.5 [°F] = ([°Rø] − 7.5) · 24/7 + 32
Delisle [°De] = (212 − [°F]) · 5/6 [°F] = 212 − [°De] · 6/5

Degree Fahrenheit
Kelvin	[K] = ([°F] + 459.67) · 5/9	[°F] = [K] · 9/5 − 459.67
Celsius	[°C] = ([°F] − 32) · 5/9	[°F] = [°C] · 9/5 + 32
Rankine	[°Ra] = [°F] + 459.67	[°F] = [°Ra] − 459.67
Réaumur	[°Ré] = ([°F] − 32) · 4/9	[°F] = [°Ré] · 9/4 + 32
Newton	[°N] = ([°F] − 32) · 11/60	[°F] = [°N] · 60/11 + 32
Rømer	[°Rø] = ([°F] − 32) · 7/24 + 7.5	[°F] = ([°Rø] − 7.5) · 24/7 + 32
Delisle	[°De] = (212 − [°F]) · 5/6	[°F] = 212 − [°De] · 6/5

Degree Rankine
Kelvin [K] = [°R] · 5/9 [°R] = [K] · 9/5
Celsius [°C] = [°R] · 5/9 − 273.15 [°R] = ([°C] + 273.15) · 9/5
Fahrenheit [°F] = [°R] − 459.67 [°R] = [°F] + 459.67
Réaumur [°Ré] = ([°R] · 5/9 - 273.15) · 4/5 [°R] = ([°Ré] · 5/4 + 273.15) · 9/5
Newton [°N] = ([°R] − 491.67) · 11/60 [°R] = [°N] · 60/11 + 491.67
Rømer [°Rø] = ([°R] − 491.67) · 7/24 + 7.5 [°R] = ([°Rø] − 7.5) · 24/7 + 491.67
Delisle [°De] = (671.67 − [°R]) · 5/6 [°R] = 671.67 − [°De] · 6/5

Degree Rankine
Kelvin	[K] = [°R] · 5/9	[°R] = [K] · 9/5
Celsius	[°C] = [°R] · 5/9 − 273.15	[°R] = ([°C] + 273.15) · 9/5
Fahrenheit	[°F] = [°R] − 459.67	[°R] = [°F] + 459.67
Réaumur	[°Ré] = ([°R] · 5/9 - 273.15) · 4/5	[°R] = ([°Ré] · 5/4 + 273.15) · 9/5
Newton	[°N] = ([°R] − 491.67) · 11/60	[°R] = [°N] · 60/11 + 491.67
Rømer	[°Rø] = ([°R] − 491.67) · 7/24 + 7.5	[°R] = ([°Rø] − 7.5) · 24/7 + 491.67
Delisle	[°De] = (671.67 − [°R]) · 5/6	[°R] = 671.67 − [°De] · 6/5

Degree Delisle
Kelvin [K] = 373.15 − [°De] · 2/3 [°De] = (373.15 − [K]) · 3/2
Celsius [°C] = 100 − [°De] · 2/3 [°De] = (100 − [°C]) · 3/2
Fahrenheit [°F] = 212 − [°De] · 6/5 [°De] = (212 − [°F]) · 5/6
Rankine [°Ra] = 671.67 − [°De] · 6/5 [°De] = (671.67 − [°Ra]) · 5/6
Réaumur [°Ré] = 80 − [°De] · 8/15 [°De] = (80 − [°Ré]) · 15/8
Newton [°N] = 33 − [°De] · 11/50 [°De] = (33 − [°N]) · 50/11
Rømer [°Rø] = 60 − [°De] · 7/20 [°De] = (60 − [°Rø]) · 20/7
Ranking to Celcius do not match equations from celcius table.

Degree Delisle
Kelvin	[K] = 373.15 − [°De] · 2/3	[°De] = (373.15 − [K]) · 3/2
Celsius	[°C] = 100 − [°De] · 2/3	[°De] = (100 − [°C]) · 3/2
Fahrenheit	[°F] = 212 − [°De] · 6/5	[°De] = (212 − [°F]) · 5/6
Rankine	[°Ra] = 671.67 − [°De] · 6/5	[°De] = (671.67 − [°Ra]) · 5/6
Réaumur	[°Ré] = 80 − [°De] · 8/15	[°De] = (80 − [°Ré]) · 15/8
Newton	[°N] = 33 − [°De] · 11/50	[°De] = (33 − [°N]) · 50/11
Rømer	[°Rø] = 60 − [°De] · 7/20	[°De] = (60 − [°Rø]) · 20/7

Degree Newton
Kelvin [K] = [°N] · 100/33 + 273.15 [°N] = ([K] − 273.15) · 33/100
Celsius [°C] = [°N] · 100/33 [°N] = [°C] · 33/100
Fahrenheit [°F] = [°N] · 60/11 + 32 [°N] = ([°F] − 32) · 11/60
Rankine [°Ra] = [°N] · 60/11 + 491.67 [°N] = ([°Ra] − 491.67) · 11/60
Réaumur [°Ré] = [°N] · 80/33 [°N] = [°Ré] · 33/80
Rømer [°Rø] = [°N] · 35/22 + 7.5 [°N] = ([°Rø] − 7.5) · 22/35
Delisle [°De] = (33 − [°N]) · 50/11 [°N] = 33 − [°De] · 11/50

Degree Newton
Kelvin	[K] = [°N] · 100/33 + 273.15	[°N] = ([K] − 273.15) · 33/100
Celsius	[°C] = [°N] · 100/33	[°N] = [°C] · 33/100
Fahrenheit	[°F] = [°N] · 60/11 + 32	[°N] = ([°F] − 32) · 11/60
Rankine	[°Ra] = [°N] · 60/11 + 491.67	[°N] = ([°Ra] − 491.67) · 11/60
Réaumur	[°Ré] = [°N] · 80/33	[°N] = [°Ré] · 33/80
Rømer	[°Rø] = [°N] · 35/22 + 7.5	[°N] = ([°Rø] − 7.5) · 22/35
Delisle	[°De] = (33 − [°N]) · 50/11	[°N] = 33 − [°De] · 11/50

Degree Réaumur
Kelvin [K] = [°Ré] · 5/4 + 273.15 [°Ré] = ([K] − 273.15) · 4/5
Celsius [°C] = [°Ré] · 5/4 [°Ré] = [°C] · 4/5
Fahrenheit [°F] = [°Ré] · 9/4 + 32 [°Ré] = ([°F] − 32) · 4/9
Rankine [°Ra] = [°Ré] · 9/4 + 491.67 [°Ré] = ([°Ra] − 491.67) · 4/9
Newton [°N] = [°Ré] · 33/80 [°Ré] = [°N] · 80/33
Rømer [°Rø] = [°Ré] · 21/32 + 7.5 [°Ré] = ([°Rø] − 7.5) · 32/21
Delisle [°De] = (80 − [°Ré]) · 15/8 [°Ré] = 80 − [°De] · 8/15

Degree Réaumur
Kelvin	[K] = [°Ré] · 5/4 + 273.15	[°Ré] = ([K] − 273.15) · 4/5
Celsius	[°C] = [°Ré] · 5/4	[°Ré] = [°C] · 4/5
Fahrenheit	[°F] = [°Ré] · 9/4 + 32	[°Ré] = ([°F] − 32) · 4/9
Rankine	[°Ra] = [°Ré] · 9/4 + 491.67	[°Ré] = ([°Ra] − 491.67) · 4/9
Newton	[°N] = [°Ré] · 33/80	[°Ré] = [°N] · 80/33
Rømer	[°Rø] = [°Ré] · 21/32 + 7.5	[°Ré] = ([°Rø] − 7.5) · 32/21
Delisle	[°De] = (80 − [°Ré]) · 15/8	[°Ré] = 80 − [°De] · 8/15

Degree Rømer
Kelvin [K] = ([°Rø] − 7.5) · 40/21 + 273.15 [°Rø] = ([K] − 273.15) · 21/40 + 7.5
Celsius [°C] = ([°Rø] − 7.5) · 40/21 [°Rø] = [°C] · 21/40 + 7.5
Fahrenheit [°F] = ([°Rø] − 7.5) · 24/7 + 32 [°Rø] = ([°F] − 32) · 7/24 + 7.5
Rankine [°Ra] = ([°Rø] − 7.5) · 24/7 + 491.67 [°Rø] = ([°Ra] − 491.67) · 7/24 + 7.5
Réaumur [°Ré] = ([°Rø] − 7.5) · 32/21 [°Rø] = [°Ré] · 21/32 + 7.5
Newton [°N] = ([°Rø] − 7.5) · 22/35 [°Rø] = [°N] · 35/22 + 7.5
Delisle [°De] = (60 − [°Rø]) · 20/7 [°Rø] = 60 − [°De] · 7/20

Degree Rømer
Kelvin	[K] = ([°Rø] − 7.5) · 40/21 + 273.15	[°Rø] = ([K] − 273.15) · 21/40 + 7.5
Celsius	[°C] = ([°Rø] − 7.5) · 40/21	[°Rø] = [°C] · 21/40 + 7.5
Fahrenheit	[°F] = ([°Rø] − 7.5) · 24/7 + 32	[°Rø] = ([°F] − 32) · 7/24 + 7.5
Rankine	[°Ra] = ([°Rø] − 7.5) · 24/7 + 491.67	[°Rø] = ([°Ra] − 491.67) · 7/24 + 7.5
Réaumur	[°Ré] = ([°Rø] − 7.5) · 32/21	[°Rø] = [°Ré] · 21/32 + 7.5
Newton	[°N] = ([°Rø] − 7.5) · 22/35	[°Rø] = [°N] · 35/22 + 7.5
Delisle	[°De] = (60 − [°Rø]) · 20/7	[°Rø] = 60 − [°De] · 7/20

External links

Temperature scale (measurement)>scales
Celsius		Fahrenheit		Kelvin
Delisle	Leyden	Newton	Rankine	Réaumur	Rømer
Conversion formulas

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Temperature conversion formulas

Comparison of temperature scales

See also

External links