Temperature Converter

Introduction to temperature - including Celsius, Fahrenheit, Kelvin & Rankine definitions - an online temperature converter


Temperature (sometimes called thermodynamic temperature) is a measure of the average kinetic energy of the particles in a system. Temperature is the degree of "hotness" ( or "coldness") - a measure of the heat intensity. The most common symbol orabbreviation for temperature is T.

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When two objects of different temperatures are in contact - the warmer object becomes colder while the colder object becomes warmer. This means that heat flows from the warmer to the colder object.

Temperature Converter

Convert between°C (Celsius),°F (Fahrenheit), K (Kelvin) and°R (Rankine) with the calculator below:

Temperature

°C

°F

K

°R

Temperature Converter - Web App

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Degree Celsius (°C) và Degree Fahrenheit (°F)

A thermometer can help us determine how cold or hot a substance is. Temperature is in most of the world measured & reported in degrees Celsius (°C). In the U.S. it is common to report temperature in degrees Fahrenheit (°F). In the Celsius & Fahrenheit scales the temperatures where ice melts (water freezes) & water boils are used as reference points.

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In the Celsius scale the freezing point of water is defined as 0°C and the boiling point is defined as 100°C In the Fahrenheit scale the water freezes at 32°F và boils at 212°F

In the Celsius scale there are 100 degrees between the freezing point & the boiling point of water compared lớn 180 degrees in the Fahrenheit scale. This means that 1°C = 1.8°F (check the section about temperature differences below).

Values can be converted between the two temperature units by using the equations:

T(°F) = 1.8 T(°C) + 32 (1)

T(°C)= (T(°F) - 32)/1.8 (2)

where

T(°C)= temperature (°C )

T(°F)= temperature (°F)

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Celsius vs. Fahrenheit


TemperatureoCoF
-20 -4
-15 5
-10 14
-5 23
0 32
5 41
10 50
15 59
20 68
25 77
30 86
35 95
40 104
45 113
50 122

Example: A patient with SARS (Severe Acute Respiratory Syndrome) has a temperature of 106°F. What is the temperature in Celsius?

T(°C) = (106°F - 32)/1.8 = 41.1 oC

Temperature Conversion Table - oC vs°F

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Temperature Difference - or Temperature Change - degree Celsius versus degree Fahrenheit

Note that for temperature difference (change) - as used in heat loss diagrams

1 degree Celsius of temperature difference equals 1.8 degree Fahrenheit of temperature difference

ΔT(°C) =ΔT(°F) / 1.8 (3)

ΔT(°F)=1.8ΔT(°C) (4)

where

ΔT(°F)= temperature difference (°F)

ΔT(°C)= temperature difference (°C)

Example: Water is cooled from 100°C lớn 60°C. What is the temperature difference in °F?

Temperature difference in degrees Celsius:

ΔT(°C)= 100 °C - 60°C = 40 C°

cảnh báo that °C is used for actual temperatures (temperature relative to lớn 273.15 K) and C° is used for temperature differences.

Temperature difference in degrees Fahrenheit calculated by using (1)

100 °C = 1.8 (100 °C) + 32 = 212 °F

60 °C = 1.8 (60 °C) + 32 = 140 °F

ΔT(°F)= 212°F -140°F = 72 °F

Temperature difference in degrees Fahrenheit calculated by using (3)

ΔT(°F)= 1.8 (40 C°) = 72 °F

Temperature Difference Converter

Temperature Difference

°F

Kelvin - K

Another scale (comtháng in science) is Kelvin, or the Absolute Temperature Scale. On the Kelvin scale the coldest temperature possible, -273 °C, has a value of 0 Kelvin (0 K) & is called the absolute zero. Units on the Kelvin scale are called Kelvins (K) và no degree symbol is used. Because there are no lower temperatures than 0 K - the Kelvin scale does not have sầu negative numbers.

The Kelvin has the same incremental scale as the Celsius scale & one unit Kelvin is equal in kích thước lớn one unit Celsius:

1 unit Kelvin = 1 unit°C

ΔT(°K) = ΔT(°C) (5)

To calculate a Kelvin temperature, add 273 to the Celsius temperature:

T(K) = T(°C) + 273.15 (6)

Example: What is the normal body temperature of 37 oC in the Kelvin scale?

T(K)=T(°C) + 273.15 = 37°C + 273.15 = 310.15 K

Degree Rankine - R

In the English system the absolute temperature is in degrees Rankine (R), not in Fahrenheit: