In the formulas below, / represents division, * represents multiplication, - subtraction, + addition and = is equal.
Tc = (5/9)*(Tf-32); Tc = temperature in degrees Celsius, Tf = temperature in degrees Fahrenheit
For example, suppose you have a Fahrenheit temperature of 98.6 degrees and you wanted to convert it into degrees on the Celsius scale. Using the above formula, you would first subtract 32 from the Fahrenheit temperature and get 66.6 as a result. Then you multiply 66.6 by five-ninths and get the converted value of 37 degrees Celsius.
Below is the formula to convert a Celsius scale temperature into degrees on the Fahrenheit scale.
Tf = (9/5)*Tc+32; Tc = temperature in degrees Celsius, Tf = temperature in degrees Fahrenheit
Assume that you have a Celsius scale temperature of 100 degrees and you wish to convert it into degrees on the Fahrenheit scale. Using the stated formula, you first multiply the Celsius scale temperature reading by nine-fifths and get a result of 180. Then add 32 to 180 and get the final converted result of 212 degrees on the Fahrenheit scale.
Below is another accepted conversion method that works just as well and perhaps might be easier to remember. No matter which direction you want to covert, Fahrenheit to Celsius or Celsius to Fahrenheit, always first add 40 to the number. Next, multiply by 5/9 or 9/5 just like the first method. Then, always subtract out the 40 you just added to yield the final result. To remember whether to use 5/9 or 9/5 when converting from Fahrenheit to Celsius or Celsius to Fahrenheit, just simply remember, F (for Fahrenheit) begins with the same letter as Fraction. 5/9 is always a Fraction; while 9/5 is also a fraction, in this form, it is Clearly a whole number plus a fraction (1 and 4/5). Thus, if you want to convert Fahrenheit (F) to Celsius (C), then use the Fraction 5/9; Celsius (C) to Fahrenheit (F), use the other, 9/5, which is Clearly not just a fraction.
For an example of this method, we'll use the values we used in the initial example, 98.6 F and 37 C, which are equal.
To convert from F to C, try these calculations manually.
98.6 + 40 = 138.6, and 138.6 * 5/9 = 77. For the final calculation, remove the 40. 77 - 40 = 37
To convert from C to F, try these calculations manually.
37 + 40 = 77, and 77 * 9/5 = 138.6. For the final calculation, remove the 40. 138.6 - 40 = 98.6
In summary, add 40, (F to C) multiply by Fraction...(C to F) multiply by the other, subtract 40.
The Celsius temperature scale is still sometimes referred to as the "centigrade" scale. Centigrade means "consisting of or divided into 100 degrees;" the Celsius scale, devised by Swedish Astronomer Andres Celsius (1701-1744) for scientific purposes, has 100 degrees between the freezing point (0 C) and boiling point (100 C) of pure water at sea level air pressure. The term Celsius was adopted in 1948 by an international conference on weights and measures.
Celsius Fahrenheit
0.00 32.00
5.00 41.00
10.00 50.00
15.00 59.00
20.00 68.00
25.00 77.00
30.00 86.00
35.00 95.00
40.00 104.00
45.00 113.00
50.00 122.00
55.00 131.00
60.00 140.00
65.00 149.00
70.00 158.00
75.00 167.00
80.00 176.00
85.00 185.00
90.00 194.00
95.00 203.00
100.00 212.00
Dr. H
2007-04-20 07:33:32
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answer #2
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answered by ? 6
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i have a very rough formula that i use just to be close to correct.
i double the c value and add 32 ... pretty rough and basic but i dont need exact.
i've also heard one where you divide the c value by 5 then multiply by 9 and then add 32 ....way more accurate
http://marine.rutgers.edu/mrs/conversion.html
good luck :)
2007-04-20 07:16:17
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answer #3
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answered by light has mass 1
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A practical method:
F ~= C * 2 +32
C ~= (F-32)/2
(2 should actually be 9/5, but it's not easy to do it quickly in your mind)
2007-04-20 07:44:03
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answer #4
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answered by roman_king1 4
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F=(C/5)*9+32 is the equation. Just click on the link below and it will give you more information.
2007-04-20 07:12:47
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answer #6
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answered by stefanie100786 2
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right here is yet differently: a million. upload 40 2. Multiply by potential of 9F/5C or 5C/9F to get the surprising instruments 3. Subtract 40 ninety 8.6 + 40 = 138.6 "F" 138.6 "F" (5C/9F) = 77 "C" 77 - 40 = 37 C, known physique temperature
2016-10-13 01:17:10
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answer #7
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answered by ? 4
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