Convert Celsius to Fahrenheit (2024)

Convert Celsius to Fahrenheit (1)

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Please provide values below to convert Celsius [°C] to Fahrenheit [°F], or vice versa.


Celsius

Definition: The Celsius (symbol: °C) is an SI (International System of Units) derived unit of temperature. It is defined based on the SI unit of temperature, the kelvin. The Celsius and Kelvin scales are precisely related, with a one-degree change in Celsius being equal to a one degree-change in kelvin. The kelvin (and thus Celsius) is defined based on the Boltzmann constant, k, which equals 1.380649 × 10-23 when expressed in the unit J·K-1, a unit equivalent to kg·m2·s-2·K-1. The kilogram, meter, and second, are defined based on Planck's constant, h, the speed of light, c, and cesium frequency, ΔνCs.

History/origin: From 1743 until 1954, the Celsius scale was based on 0°C for the freezing point of water and 100 °C for the boiling point of water, both at a pressure of one standard atmosphere, using mercury as the working material. This was not always the case, and originally 0°C was defined as the boiling point of water and 100°C was defined as the melting point of snow. Celsius as a unit and a scale was not widely used until this original definition was inverted. In 1954, the unit, "degree Celsius," as well as the Celsius scale were again re-defined to instead be based on absolute zero (-273.15 °C) and the triple point of VSMOW (specially purified water). This is the definition that was used up until 2019, when the kelvin was redefined based on the definitions of the second, meter, and kilogram.

Current use: The Celsius scale replaced the Fahrenheit scale in most countries in the mid to late 20th century. Almost all countries around the world use this scale, except for those in which the metric system has not been adopted, such as the United States. Even in countries like the United States however, Celsius is widely used within the scientific community—it just is not widely used in everyday temperature references.

Fahrenheit

Definition: The Fahrenheit (symbol: °F) is a unit of temperature that was widely used prior to metrication. It is currently defined by two fixed points: the temperature at which water freezes, 32°F, and the boiling point of water, 212°F, both at sea level and standard atmospheric pressure. The interval between the freezing and boiling point is divided into 180 equal parts.

History/Origin: The Fahrenheit scale was developed based on a measurement proposed in 1724 by the German physicist Daniel Gabriel Fahrenheit. He initially based the scale on an equal ice-salt mixture, selecting the values of 30°F for the freezing point of water, and 90°F for normal body temperature. He later adjusted the scale such that the melting point of ice was 32°F and body temperature was 96°F. He chose these values to simplify the degree markings he could make on his instruments, since this difference between the temperatures allowed him to mark degree lines by bisecting the interval six times. Later, when using the freezing and boiling points of water as fixed reference points for thermometers became popular, the scale was slightly re-defined such that there would be 180 degrees separating freezing and boiling point, resulting in normal human body temperature being approximately 98°F, rather than Fahrenheit's 96°F.

Current use: Until the 1960's the Fahrenheit scale was the primary scale used in English-speaking countries. Today, most countries around the world use the Celsius temperature scale instead, many having made the change during their metrication processes (conversion to using the metric system of units). However, the Fahrenheit scale is still used as the official temperature scale in a number of countries, including the United States (as well as its unincorporated territories), the Bahamas, Belize, the Cayman Islands, and a few others.

Celsius to Fahrenheit Conversion Table

Celsius [°C]Fahrenheit [°F]
0.01 °C32.018 °F
0.1 °C32.18 °F
1 °C33.8 °F
2 °C35.6 °F
3 °C37.4 °F
5 °C41 °F
10 °C50 °F
20 °C68 °F
50 °C122 °F
100 °C212 °F
1000 °C1832 °F

How to Convert Celsius to Fahrenheit

F =
9
5
C + 32
C =
5
9
(F - 32)

Example: convert 15 °C to °F:
15 °C = 15 × 9/5 + 32 = 59 °F

Popular Temperature Unit Conversions

Celsius to Fahrenheit

Fahrenheit to Celsius

Celsius to Kelvin

Kelvin to Celsius

Fahrenheit to Kelvin

Kelvin to Fahrenheit


Convert Celsius to Other Temperature Units

Celsius to Kelvin

Celsius to Rankine

Celsius to Reaumur

Celsius to Triple Point Of Water

Convert Celsius to Fahrenheit (2024)

FAQs

How to convert from C to F easily? ›

So if you are like me, and are familiar with temperature in Fahrenheit, just remember how to get C to F: Double it and add 30. If you are more familiar with Celsius, you more often only need to convert F to C. So just remember: Take away 30 and halve it.

What is the formula for temperature from Celsius to Fahrenheit? ›

The C to F conversion formula is given as, F = C×(9/5)+32, where C = Measure of temperature in degree Celsius (°C) and F = Measure of temperature in degree Fahrenheit (°F).

What is the conversion chart for Celsius to Fahrenheit? ›

Celsius to Fahrenheit
Celsius (°C)Fahrenheit (°F)
1 °C33.8 °F
2 °C35.6 °F
3 °C37.4 °F
4 °C39.2 °F
67 more rows

What is the formula for changing Fahrenheit to Celsius? ›

What is the Formula to Convert Fahrenheit to Celsius? The Fahrenheit to Celsius formula is expressed as °C = (°F - 32) × 5/9; in which the value of F (Fahrenheit) is substituted and we get the value in Celsius. This formula converts the given temperature value from Fahrenheit to Celsius.

How do you convert the following F to C? ›

Step 1: First subtract 32 from the given Fahrenheit temperature. Step 2: Now multiply the difference value obtained in step 1 by 5. Step 3: Finally, divide the product value obtained in step 2 by 9.

What are the steps used to convert a temperature from Celsius to Fahrenheit? ›

To convert Celsius to Fahrenheit, start by multiplying the Celsius temperature by 1.8. Then, add 32 to the product to get the degrees in Fahrenheit. For example, if you were trying to convert 20 degrees Celsius to Fahrenheit, first you'd multiply 20 by 1.8 to get 36. Then, you'd add 32 to 36 and get 68.

What temperature is Celsius equal to Fahrenheit? ›

The Fahrenheit and Celsius scales have one point at which they intersect. They are equal at -40 °C and -40 °F. The simple method to find when two temperature scales are equal to each other is to set the conversion factors for the two scales equal to each other and solve for temperature.

What is the rule for converting Celsius to Fahrenheit? ›

Celsius to Fahrenheit Conversion Formula

Multiply the °C temperature by 1.8. Add 32 to this number. This is the answer in °F.

How do you convert exact Fahrenheit to Celsius? ›

Fahrenheit °F to Celsius °C Formula

°C equals °F minus 32, divided by 9/5. Alternatively, since 9/5 = 1.8 we can say °C equals °F minus 32, divided by 1.8.

How do you convert Celsius to Fahrenheit in code? ›

To convert Celsius to Fahrenheit we are going to use the formula “F = (C * 9/5) + 32″. We will take Celsius temperature as input from the user, apply the conversion formula of Fahrenheit from Celsius, and display the result.

What is the formula for changing temperature from Celsius to Fahrenheit? ›

Temperature conversions use the following formulas: Temperature in degrees Fahrenheit (°F) = (Temperature in degrees Celsius (°C) * 9/5) + 32. Temperature in degrees Celsius (°C) = (Temperature in degrees Fahrenheit (°F) - 32) * 5/9.

How do you convert F to C without a calculator? ›

Super-easy formula
  1. Fahrenheit to Celsius, subtract 30 then divide by 2.
  2. Celsius to Fahrenheit, multiply by 2 then add 30.
Dec 22, 2022

How do you go from F to C easily? ›

Fahrenheit to Celsius: Subtract 30 from the Fahrenheit temperature and then divide by two. So, using the approximation formula: 74 F – 30 = 44. 44 / 2 = 22 °C.

How do you modulate from C to F? ›

Well, just use the dominant chain and just resolve to whatever key you want to modulate to. From C major to F major? C - C7 - F.

How do you convert the following C into F? ›

Multiply the °C temperature by 1.8. Add 32 to this number. This is the answer in °F.

How to convert C to F in code? ›

C
  1. #include<stdio.h>
  2. int main()
  3. {
  4. float fahrenheit, celsius;
  5. celsius = 24;
  6. fahrenheit =( (celsius*9)/5)+32;
  7. printf("\n\n Temperature in fahrenheit is: %f",fahrenheit);
  8. return (0);

References

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