Units of Measure

Public Health and Safety

Temperature

Calculators

# I know how to calculate Celsius to Fahrenheit and vice versa with a calculator but Is there an easier formula to do in one's head?

###### Wiki User

###### October 23, 2011 6:23AM

Here is a way from C to F that is easy to do in your head;

Say you see 28 C

Double that.. that makes it 56

Subtract 5 (actually 5.6, you are moving one decimal to the left..but leave the .6 off)

That gives you 51

Add 32

So 28 C = 83 F

(I have not found a similar way for F to C)

F= C/5X9+32= Celsius

C= F-32/9X5= Fahrenheit

## Related Questions

###### Asked in Science, Temperature

### What is 162 Kelvin equal to in degrees Fahrenheit?

162 kelvin = -168.07 degrees Fahrenheit
To calculate Kelvin temperatures, you simply add 273.15 to the
Celsius temperature. The formula is as such: Kelvin temperature =
Celsius temperature + 273.15 degrees. To change Fahrenheit to
Celsius, subtract 32 and then divide by 9. Multiply that result by
5. The formula is as such: Celsius = [(Fahrenheit - 32) / 9] x
5.

###### Asked in Geometry

### What is the correct formula for calculating the change of temperature from Fahrenheit to Celsius?

To calculate Fahrenheit to Celsius, you take the temperature in
Fahrenheit and multiply it by 0.8. Using the answer of that number,
subtract 32 from it. That is your temperature in Celsius. To change
that temperature back to Fahrenheit, you would add 32 to your
Celsius temperature. After getting that answer, you divide it by
0.8 and Voislá, you're back at your temperature in Fahrenheit.