Temperature Conversion

Temperature Conversion Table
Temperature Conversion Worksheet Answers

Temperature Unit Conversion Formulas. There's no complicated math required to convert one temperature unit to another. Simple addition and subtraction will get you through conversions between the Kelvin and Celsius temperature scales. Fahrenheit involves a bit of multiplication, but it's nothing you can't handle.
Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper. The formula to convert from Celsius to Fahrenheit is: Fahrenheit = (Celsius x 1.8) + 32.

Temperature Metric Conversions. Please select the temperature units to start metric conversion. Because they both start at zero, the formula to convert between the two very easy (in = cm. 0.39370) Temperature units aren't built in the same simple way, because they don't all. Free online temperature converter - converts between 6 units of temperature, including kelvin K, Celsius °C, Fahrenheit °F, Rankine °R, etc. Also, explore many other unit converters or learn more about temperature unit conversions.

This is a collection of temperatureconversion formulas and comparisons among eight different temperature scales, several of which have long been obsolete.

Celsius[edit]

Temperature conversions
from Celsius	to Celsius
Fahrenheit	[°F] = [°C] × ⁹⁄₅ + 32	[°C] = ([°F] − 32) × ⁵⁄₉
Kelvin	[K] = [°C] + 273.15	[°C] = [K] − 273.15
Rankine	[°R] = ([°C] + 273.15) × ⁹⁄₅	[°C] = ([°R] − 491.67) × ⁵⁄₉
Delisle	[°De] = (100 − [°C]) × ³⁄₂	[°C] = 100 − [°De] × ²⁄₃
Newton	[°N] = [°C] × ³³⁄₁₀₀	[°C] = [°N] × ¹⁰⁰⁄₃₃
Réaumur	[°Ré] = [°C] × ⁴⁄₅	[°C] = [°Ré] × ⁵⁄₄
Rømer	[°Rø] = [°C] × ²¹⁄₄₀ + 7.5	[°C] = ([°Rø] − 7.5) × ⁴⁰⁄₂₁

Fahrenheit[edit]

Temperature conversions
from Fahrenheit	to Fahrenheit
Celsius	[°C] = ([°F] − 32) × ⁵⁄₉	[°F] = [°C] × ⁹⁄₅ + 32
Kelvin	[K] = ([°F] + 459.67) × ⁵⁄₉	[°F] = [K] × ⁹⁄₅ − 459.67
Rankine	[°R] = [°F] + 459.67	[°F] = [°R] − 459.67
Delisle	[°De] = (212 − [°F]) × ⁵⁄₆	[°F] = 212 − [°De] × ⁶⁄₅
Newton	[°N] = ([°F] − 32) × ¹¹⁄₆₀	[°F] = [°N] × ⁶⁰⁄₁₁ + 32
Réaumur	[°Ré] = ([°F] − 32) × ⁴⁄₉	[°F] = [°Ré] × ⁹⁄₄ + 32
Rømer	[°Rø] = ([°F] − 32) × ⁷⁄₂₄ + 7.5	[°F] = ([°Rø] − 7.5) × ²⁴⁄₇ + 32

Kelvin[edit]

Temperature conversions
from Kelvin	to Kelvin
Celsius	[°C] = [K] − 273.15	[K] = [°C] + 273.15
Fahrenheit	[°F] = [K] × ⁹⁄₅ − 459.67	[K] = ([°F] + 459.67) × ⁵⁄₉
Rankine	[°R] = [K] × ⁹⁄₅	[K] = [°R] × ⁵⁄₉
Delisle	[°De] = (373.15 − [K]) × ³⁄₂	[K] = 373.15 − [°De] × ²⁄₃
Newton	[°N] = ([K] − 273.15) × ³³⁄₁₀₀	[K] = [°N] × ¹⁰⁰⁄₃₃ + 273.15
Réaumur	[°Ré] = ([K] − 273.15) × ⁴⁄₅	[K] = [°Ré] × ⁵⁄₄ + 273.15
Rømer	[°Rø] = ([K] − 273.15) × ²¹⁄₄₀ + 7.5	[K] = ([°Rø] − 7.5) × ⁴⁰⁄₂₁ + 273.15

Rankine[edit]

Temperature conversions
from Rankine	to Rankine
Celsius	[°C] = ([°R] − 491.67) × ⁵⁄₉	[°R] = ([°C] + 273.15) × ⁹⁄₅
Fahrenheit	[°F] = [°R] − 459.67	[°R] = [°F] + 459.67
Kelvin	[K] = [°R] × ⁵⁄₉	[°R] = [K] × ⁹⁄₅
Delisle	[°De] = (671.67 − [°R]) × ⁵⁄₆	[°R] = 671.67 − [°De] × ⁶⁄₅
Newton	[°N] = ([°R] − 491.67) × ¹¹⁄₆₀	[°R] = [°N] × ⁶⁰⁄₁₁ + 491.67
Réaumur	[°Ré] = ([°R] − 491.67) × ⁴⁄₉	[°R] = [°Ré] × ⁹⁄₄ + 491.67
Rømer	[°Rø] = ([°R] − 491.67) × ⁷⁄₂₄ + 7.5	[°R] = ([°Rø] − 7.5) × ²⁴⁄₇ + 491.67

Delisle[edit]

Temperature conversions
from Delisle	to Delisle
Celsius	[°C] = 100 − [°De] × ²⁄₃	[°De] = (100 − [°C]) × ³⁄₂
Fahrenheit	[°F] = 212 − [°De] × ⁶⁄₅	[°De] = (212 − [°F]) × ⁵⁄₆
Kelvin	[K] = 373.15 − [°De] × ²⁄₃	[°De] = (373.15 − [K]) × ³⁄₂
Rankine	[°R] = 671.67 − [°De] × ⁶⁄₅	[°De] = (671.67 − [°R]) × ⁵⁄₆
Newton	[°N] = 33 − [°De] × ¹¹⁄₅₀	[°De] = (33 − [°N]) × ⁵⁰⁄₁₁
Réaumur	[°Ré] = 80 − [°De] × ⁸⁄₁₅	[°De] = (80 − [°Ré]) × ¹⁵⁄₈
Rømer	[°Rø] = 60 − [°De] × ⁷⁄₂₀	[°De] = (60 − [°Rø]) × ²⁰⁄₇

Sir Isaac Newton's Degree Of Temperature[edit]

Do not get confused with 'Newton' (Unit Of Force).

Temperature conversions
from Newton	to Newton
Celsius	[°C] = [°N] × ¹⁰⁰⁄₃₃	[°N] = [°C] × ³³⁄₁₀₀
Fahrenheit	[°F] = [°N] × ⁶⁰⁄₁₁ + 32	[°N] = ([°F] − 32) × ¹¹⁄₆₀
Kelvin	[K] = [°N] × ¹⁰⁰⁄₃₃ + 273.15	[°N] = ([K] − 273.15) × ³³⁄₁₀₀
Rankine	[°R] = [°N] × ⁶⁰⁄₁₁ + 491.67	[°N] = ([°R] − 491.67) × ¹¹⁄₆₀
Delisle	[°De] = (33 − [°N]) × ⁵⁰⁄₁₁	[°N] = 33 − [°De] × ¹¹⁄₅₀
Réaumur	[°Ré] = [°N] × ⁸⁰⁄₃₃	[°N] = [°Ré] × ³³⁄₈₀
Rømer	[°Rø] = [°N] × ³⁵⁄₂₂ + 7.5	[°N] = ([°Rø] − 7.5) × ²²⁄₃₅

Réaumur[edit]

Temperature conversions
from Réaumur	to Réaumur
Celsius	[°C] = [°Ré] × ⁵⁄₄	[°Ré] = [°C] × ⁴⁄₅
Fahrenheit	[°F] = [°Ré] × ⁹⁄₄ + 32	[°Ré] = ([°F] − 32) × ⁴⁄₉
Kelvin	[K] = [°Ré] × ⁵⁄₄ + 273.15	[°Ré] = ([K] − 273.15) × ⁴⁄₅
Rankine	[°R] = [°Ré] × ⁹⁄₄ + 491.67	[°Ré] = ([°R] − 491.67) × ⁴⁄₉
Delisle	[°De] = (80 − [°Ré]) × ¹⁵⁄₈	[°Ré] = 80 − [°De] × ⁸⁄₁₅
Newton	[°N] = [°Ré] × ³³⁄₈₀	[°Ré] = [°N] × ⁸⁰⁄₃₃
Rømer	[°Rø] = [°Ré] × ²¹⁄₃₂ + 7.5	[°Ré] = ([°Rø] − 7.5) × ³²⁄₂₁

Rømer[edit]

Temperature conversions
from Rømer	to Rømer
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
Kelvin	[K] = ([°Rø] − 7.5) × ⁴⁰⁄₂₁ + 273.15	[°Rø] = ([K] − 273.15) × ²¹⁄₄₀ + 7.5
Rankine	[°R] = ([°Rø] − 7.5) × ²⁴⁄₇ + 491.67	[°Rø] = ([°R] − 491.67) × ⁷⁄₂₄ + 7.5
Delisle	[°De] = (60 − [°Rø]) × ²⁰⁄₇	[°Rø] = 60 − [°De] × ⁷⁄₂₀
Newton	[°N] = ([°Rø] − 7.5) × ²²⁄₃₅	[°Rø] = [°N] × ³⁵⁄₂₂ + 7.5
Réaumur	[°Ré] = ([°Rø] − 7.5) × ³²⁄₂₁	[°Rø] = [°Ré] × ²¹⁄₃₂ + 7.5

Comparison values chart[edit]

Celsius	Fahrenheit	Kelvin	Rankine	Delisle	Newton	Réaumur	Rømer
500.00	932.00	773.15	1391.67	−600.00	165.00	400.00	270.00
490.00	914.00	763.15	1373.67	−585.00	161.70	392.00	264.75
480.00	896.00	753.15	1355.67	−570.00	158.40	384.00	259.50
470.00	878.00	743.15	1337.67	−555.00	155.10	376.00	254.25
460.00	860.00	733.15	1319.67	−540.00	151.80	368.00	249.00
450.00	842.00	723.15	1301.67	−525.00	148.50	360.00	243.75
440.00	824.00	713.15	1283.67	−510.00	145.20	352.00	238.50
430.00	806.00	703.15	1265.67	−495.00	141.90	344.00	233.25
420.00	788.00	693.15	1247.67	−480.00	138.60	336.00	228.00
410.00	770.00	683.15	1229.67	−465.00	135.30	328.00	222.75
400.00	752.00	673.15	1211.67	−450.00	132.00	320.00	217.50
390.00	734.00	663.15	1193.67	−435.00	128.70	312.00	212.25
380.00	716.00	653.15	1175.67	−420.00	125.40	304.00	207.00
370.00	698.00	643.15	1157.67	−405.00	122.10	296.00	201.75
360.00	680.00	633.15	1139.67	−390.00	118.80	288.00	196.50
350.00	662.00	623.15	1121.67	−375.00	115.50	280.00	191.25
340.00	644.00	613.15	1103.67	−360.00	112.20	272.00	186.00
330.00	626.00	603.15	1085.67	−345.00	108.90	264.00	180.75
320.00	608.00	593.15	1067.67	−330.00	105.60	256.00	175.50
310.00	590.00	583.15	1049.67	−315.00	102.30	248.00	170.25
300.00	572.00	573.15	1031.67	−300.00	99.00	240.00	165.00
290.00	554.00	563.15	1013.67	−285.00	95.70	232.00	159.75
280.00	536.00	553.15	995.67	−270.00	92.40	224.00	154.50
270.00	518.00	543.15	977.67	−255.00	89.10	216.00	149.25
260.00	500.00	533.15	959.67	−240.00	85.80	208.00	144.00
250.00	482.00	523.15	941.67	−225.00	82.50	200.00	138.75
240.00	464.00	513.15	923.67	−210.00	79.20	192.00	133.50
230.00	446.00	503.15	905.67	−195.00	75.90	184.00	128.25
220.00	428.00	493.15	887.67	−180.00	72.60	176.00	123.00
210.00	410.00	483.15	869.67	−165.00	69.30	168.00	117.75
200.00	392.00	473.15	851.67	−150.00	66.00	160.00	112.50
190.00	374.00	463.15	833.67	−135.00	62.70	152.00	107.25
180.00	356.00	453.15	815.67	−120.00	59.40	144.00	102.00
170.00	338.00	443.15	797.67	−105.00	56.10	136.00	96.75
160.00	320.00	433.15	779.67	−90.00	52.80	128.00	91.50
150.00	302.00	423.15	761.67	−75.00	49.50	120.00	86.25
140.00	284.00	413.15	743.67	−60.00	46.20	112.00	81.00
130.00	266.00	403.15	725.67	−45.00	42.90	104.00	75.75
120.00	248.00	393.15	707.67	−30.00	39.60	96.00	70.50
110.00	230.00	383.15	689.67	−15.00	36.30	88.00	65.25
100.00	212.00	373.15	671.67	0.00	33.00	80.00	60.00
90.00	194.00	363.15	653.67	15.00	29.70	72.00	54.75
80.00	176.00	353.15	635.67	30.00	26.40	64.00	49.50
70.00	158.00	343.15	617.67	45.00	23.10	56.00	44.25
60.00	140.00	333.15	599.67	60.00	19.80	48.00	39.00
50.00	122.00	323.15	581.67	75.00	16.50	40.00	33.75
40.00	104.00	313.15	563.67	90.00	13.20	32.00	28.50
30.00	86.00	303.15	545.67	105.00	9.90	24.00	23.25
20.00	68.00	293.15	527.67	120.00	6.60	16.00	18.00
10.00	50.00	283.15	509.67	135.00	3.30	8.00	12.75
0.00	32.00	273.15	491.67	150.00	0.00	0.00	7.50
−10.00	14.00	263.15	473.67	165.00	−3.30	−8.00	2.25
−20.00	−4.00	253.15	455.67	180.00	−6.60	−16.00	−3.00
−30.00	−22.00	243.15	437.67	195.00	−9.90	−24.00	−8.25
−40.00	−40.00	233.15	419.67	210.00	−13.20	−32.00	−13.50
−50.00	−58.00	223.15	401.67	225.00	−16.50	−40.00	−18.75
−60.00	−76.00	213.15	383.67	240.00	−19.80	−48.00	−24.00
−70.00	−94.00	203.15	365.67	255.00	−23.10	−56.00	−29.25
−80.00	−112.00	193.15	347.67	270.00	−26.40	−64.00	−34.50
−90.00	−130.00	183.15	329.67	285.00	−29.70	−72.00	−39.75
−100.00	−148.00	173.15	311.67	300.00	−33.00	−80.00	−45.00
−110.00	−166.00	163.15	293.67	315.00	−36.30	−88.00	−50.25
−120.00	−184.00	153.15	275.67	330.00	−39.60	−96.00	−55.50
−130.00	−202.00	143.15	257.67	345.00	−42.90	−104.00	−60.75
−140.00	−220.00	133.15	239.67	360.00	−46.20	−112.00	−66.00
−150.00	−238.00	123.15	221.67	375.00	−49.50	−120.00	−71.25
−160.00	−256.00	113.15	203.67	390.00	−52.80	−128.00	−76.50
−170.00	−274.00	103.15	185.67	405.00	−56.10	−136.00	−81.75
−180.00	−292.00	93.15	167.67	420.00	−59.40	−144.00	−87.00
−190.00	−310.00	83.15	149.67	435.00	−62.70	−152.00	−92.25
−200.00	−328.00	73.15	131.67	450.00	−66.00	−160.00	−97.50
−210.00	−346.00	63.15	113.67	465.00	−69.30	−168.00	−102.75
−220.00	−364.00	53.15	95.67	480.00	−72.60	−176.00	−108.00
−230.00	−382.00	43.15	77.67	495.00	−75.90	−184.00	−113.25
−240.00	−400.00	33.15	59.67	510.00	−79.20	−192.00	−118.50
−250.00	−418.00	23.15	41.67	525.00	−82.50	−200.00	−123.75
−260.00	−436.00	13.15	23.67	540.00	−85.80	−208.00	−129.00
−270.00	−454.00	3.15	5.67	555.00	−89.10	−216.00	−134.25
−273.15	−459.67	0.00	0.00	559.725	−90.1395	−218.52	−135.90375
Celsius	Fahrenheit	Kelvin	Rankine	Delisle	Newton	Réaumur	Rømer

Comparison of temperature scales[edit]

**Comparison of temperature scales**
Comment	Kelvin	Celsius	Fahrenheit	Rankine	Delisle	Newton	Réaumur	Rømer
Absolute zero	0.00	−273.15	−459.67	0.00	559.73	−90.14	−218.52	−135.90
Lowest recorded surface temperature on Earth^[1]	184	−89.2^[1]	−128.6^[1]	331	284	−29	−71	−39
Fahrenheit's ice/salt mixture	255.37	−17.78	0.00	459.67	176.67	−5.87	−14.22	−1.83
Ice melts (at standard pressure)	273.15	0.00	32.00	491.67	150.00	0.00	0.00	7.50
Triple point of water	273.16	0.01	32.018	491.688	149.985	0.0033	0.008	7.50525
Average surface temperature on Earth	288	15	59	519	128	5	12	15
Average human body temperature*	310	37	98	558	95	12	29	27
Highest recorded surface temperature on Earth^[2]	331	58^[2]	136.4^[2]	596	63	19	46	38
Water boils (at standard pressure)	373.1339	99.9839	211.97102^[3]	671.64102^[3]	0.00	33.00	80.00	60.00
Titanium melts	1941	1668	3034	3494	−2352	550	1334	883
The surface of the Sun	5800	5500	9900	10400	−8100	1800	4400	2900

* 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.^[4]

Some numbers in this table have been rounded.

Google temperature conversion calculator

Graphical representation[edit]

Rankine (°R)
Kelvin (K)
Fahrenheit (°F)
Celsius (°C) Réaumur (°Ré) Rømer (°Rø) Newton (°N)
Delisle (°D)
Absolute zero	Lowest recorded surface temperature on Earth^[1]	Fahrenheit's ice/water/salt mixture	Melting point of ice (at standard pressure)	Average surface temperature on Earth (15 °C)	Average human body temperature (37 °C)	Highest recorded surface temperature on Earth^[2]	Boiling point of water (at standard pressure)

Conversion table between the different temperature units[edit]