what is the conversion from Fahrenheit to Celsius?

Answer 1

Temperature Conversion from Fahrenheit to Celsius
The metric system uses the Celsius scale to measure temperature. However, temperatures are still measured on the Fahrenheit scale in the U.S.

Water freezes at 0o Celsius and boils at 100o Celsius which is a difference of 100o. Water freezes at 32o Fahrenheit and boils at 212o Fahrenheit which is a difference of 180o. Therefore each degree on the Fahrenheit scale is equal to 100/180 or 5/9 degrees on the Celsius scale.

How to convert Fahrenheit temperatures to Celsius
Subtract 32o to adjust for the offset in the Fahrenheit scale.
Multiply the result by 5/9.
Example: convert 98.6o Fahrenheit to Celsius.
98.6 - 32 = 66.6
66.6 * 5/9 = 333/9 = 37o C.
There is a mental math method to approximate the Fahrenheit to Celsius conversion. The ratio of 5/9 is approximately equal to 0.55555....

How to approximate the conversion of Fahrenheit temperatures to Celsius with mental math.
Subtract 32o to adjust for the offset in the Fahrenheit scale.
Divide the Celsius temperature by 2 (multiply by 0.5).
Take 1/10 of this number (0.5 * 1/10 = 0.05) and add it from the number above.
Example: convert 98.6o F to Celsius.
98.6 - 32 = 66.6
66.6 * 1/2 = 33.3
33.3 * 1/10 = 3.3
33.3 + 3.3 = 36.6 which is an approximation of the Celsius temperature
Note: This lesson includes temperatures that use negative numbers. Negative numbers follow a pattern that is opposite of positive numbers. The number -20 is smaller than the number -10. Example of counting with negative and positive numbers: -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5

Example of converting negative Fahrenheit temperatures to Celsius
Convert -4o F to Celsius.
-4 - 32 = -36
-36 * 5/9 = -180/9 = -20o C
http://www.aaamath.com/B/mea514x3.htm

Answer 2

Fahrenheit = (Celsius * (9/5)) + 32
Celsium = (Fahrenheit - 32) * 5/9

Answer 3

Celcius= 5/9(F-32)
Fahrenheit=9C/5+32

Answer 4

All these excact conversions is what creates national aversion to International Standard ("metric") Units

One degree C is about 2x a degree F
Zero C is about 30F
From C to F mutliply by 2, then add 30
From F to C, subtract 30 and divide by two.
These calculation can be done in your head and you'll be surprised how close you are.

For very high temperatures: 1000C ~ 2000F (the extra 30 degrees become less significant.)

Same for pounds to kilograms: 1 kg ~ 2 lbs
and quarts (or gallons) to liter: 1 quart ~ 1 liter so 1 gal ~ 4 liter

Oh yes, and 1 meter ~ a yard

You cannot use this for precise conversions, so don't use this on a test. But these simplified conversion will give you a better feel for the various "metric" dimensions.

Answer 5

Convert 30f To Celsius

Answer 6

(fahrenheit-32) * 5/9

Answer 7

F=Fahrenheit
(F-32)/1.8 = Celsius.

Also; to convert it the other way around:

C=Celcius
1.8C+32 = Fahrenheit

Answer 8

C = (F - 32) * 5/9

Example: 20 C = (68 -32) * 5/9

Lots of good software progs out on the www that will convert for you as well.

Answer 9

u should use this formula (F = 9/5C +32) and then apply the substitute (Fahrenheit/Celsius) and then equate the equation. you'll surely get it.

Answer 10

C *2+28 =F
F-28/2=C
Its usually within a degree + or -