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Celsius Scale Vs Fahrenheit Scale: Definition, Differences, Formula, Examples

What is Celsius scale ?

The Celsius scale, sometimes known as the centigrade scale, is a temperature scale based on water’s freezing point of 0°C and boiling point of 100°C.

• In 1742 A.D., Swedish astronomer Anders Celsius introduced the scale, which was also named after him.
• The sign for this scale is °C. The Celsius scale originally utilised 0°C for the boiling point of water and 100°C for the melting point of ice, but it was eventually inverted to its current form.
• The lower fixed point is 0°C, and the upper fixed point is 100°C, according to this scale.
• The temperature range between these two points is divided into 100 equal pieces, each of which is one degree Celsius (1°C).
• The freezing point of water is 0°C in the inverted version of the Celsius scale, and the boiling point of water is 100°C.
• However, a current Celsius scale based on the triple point of Vienna Standard Mean ocean water has been established, which has improved with the concept of absolute zero.
• According to this, the present Celsius scale is based on the triple point of water rather than the freezing and boiling points of water.
• After May 2019, the absolute zero temperature, or -273.15°C, will be indicated by 0K or -273.15°C.
• However, before that, the temperature of water’s triple point was precisely defined at 273.16 K or 0.01 °C.
• The average human body temperature is 37 degrees Celsius on the Celsius scale.
• The following is the formula for converting the Celsius scale to the Fahrenheit scale:

+ 32 °F = (9/5 °C)

• The Celsius scale is widely utilised in locations where metric system units are used, and it is consequently used for all scientific purposes.

What is Fahrenheit scale?

The Fahrenheit scale is based on the freezing point of water being 32°F and the boiling point of water being 212°F.

• In 1720 A.D., physicist Daniel Gabriel Fahrenheit invented the scale, which was also named after him. The sign for this scale is °F.
• The temperature of a brine solution with an equal amount of ice, water, and salt is the lowest defining point on the Fahrenheit scale (ammonium chloride).
• The average human body temperature was first set at 96°F, but was later raised to 98.6°F.
• The lower fixed point on this scale is 32 degrees Fahrenheit, and the top fixed point is 212 degrees Fahrenheit.
• The area between these two temperatures is divided into 180 equal sections, each one equaling one degree Fahrenheit (1°F).
• On the Fahrenheit scale, water has a freezing point of 32 degrees Fahrenheit and a boiling temperature of 212 degrees Fahrenheit.
• The following is the formula for converting degrees Fahrenheit to degrees Celsius:

5/9 °C = (°F – 32)

• In the Fahrenheit scale, absolute zero is -459.67° F.
• The Fahrenheit scale was the world’s first standardised temperature scale. Until the 1960s, it was common in most English-speaking countries.
• With the exception of the United States, most countries adopted the Celsius scale after 1960.

Celsius to Fahrenheit Calculator or Formula

Celsius (C) to Fahrenheit (F) Formula:

Formula for converting Celsius (C) to Fahrenheit (F):

°F = (9/5 x °C) + 32.

Celsius (C)  to Fahrenheit (F) Example

Suppose the temperature is 50 degrees Celsius.  and you want to know what the figure would be in Fahrenheit

°F = (9/5 x °C) + 32.

Put the values,
°F = (9/5 x 50) + 32.

°F= 122.0

Fahrenheit to Celsius Calculator or Formula

Formula for converting Fahrenheit (F) to Celsius (C):

C = 5/9 x (F-32)

Fahrenheit (F) to Celsius (C) Example

Suppose the temperature is 80 degrees Fahrenheit and you want to know what the figure would be in Celsius. Use the above three steps:

80 F – 32 = 48
5 x 48 = 240
240 / 9 = 26.7 C
So the temperature in Celsius is 26.7 C.

Celsius to Fahrenheit chart

 Celsius (°C) Fahrenheit (°F) -50 °C -58.0 °F -40 °C -40.0 °F -30 °C -22.0 °F -20 °C -4.0 °F -10 °C 14.0 °F -9 °C 15.8 °F -8 °C 17.6 °F -7 °C 19.4 °F -6 °C 21.2 °F -5 °C 23.0 °F -4 °C 24.8 °F -3 °C 26.6 °F -2 °C 28.4 °F -1 °C 30.2 °F 0 °C 32.0 °F 1 °C 33.8 °F 2 °C 35.6 °F 3 °C 37.4 °F 4 °C 39.2 °F 5 °C 41.0 °F 6 °C 42.8 °F 7 °C 44.6 °F 8 °C 46.4 °F 9 °C 48.2 °F 10 °C 50.0 °F 20 °C 68.0 °F 30 °C 86.0 °F 40 °C 104.0 °F 50 °C 122.0 °F 60 °C 140.0 °F 70 °C 158.0 °F 80 °C 176.0 °F 90 °C 194.0 °F 100 °C 212.0 °F 200 °C 392.0 °F 300 °C 572.0 °F 400 °C 752.0 °F 500 °C 932.0 °F 600 °C 1112.0 °F 700 °C 1292.0 °F 800 °C 1472.0 °F 900 °C 1652.0 °F 1000 °C 1832.0 °F

Important websites to convert a Celsius scale to Fahrenheit scale

Important websites to convert a Fahrenheit scale to Celsius scale

Celsius Scale Vs Fahrenheit Scale Citations

• https://en.wikipedia.org/wiki/Scale_of_temperature
• http://www.jspayne.com/php/SummaryGet.php?FindGo=Fahrenheit
• https://www.nextgurukul.in/wiki/concept/icse/class-7/physics/heat/temperature-and-its-measurement/3959265
• https://www.britannica.com/technology/Celsius-temperature-scale
• https://www.britannica.com/science/Fahrenheit-temperature-scale