[mdjlucan]

Thermometer  can anyone tell me which the reading would say in Fahrenheit   As it's only in the Celsius

[oldgrunge]

To convert Celsius to Fahrenheit, double the reading and add 30. E.g. 20 deg. C would be 20 x 2 =40 + 30 =70 deg.F.

[JimB]

.
I have one of the "weather stations" which can be set to either "F" or "C" I keep the sender in the greenhouse and the station on the kitchen window.  It has dates time pressures etc, very informative!

Got it in Lidls £19.99 some time ago, but have seen them elsewhere about the same or cheaper priced also much dearer!

Centigrade is totally useless if you are a gardener, the Kelvin scale is as about as much use in my opinion!

Cheers!

[al78]

Temp (F) = (Temp(C) x 1.8) + 32

Edited to prevent forum software interpreting 8) as  !

[viettaclark]

Or even....F = C x 9/5 + 32
15C would be 15x9 = 135
                    135/5=27   
                   27+32=59F
To get back to C just subtract 32 from F and multiply by 5/9

Here endeth the lesson for today......

[JayG]

There's plenty of Centigrade to Fahrenheit instant conversion websites available, or you could print out a table of the most useful equivalents (also available online.)

I've been mentally converting C-F for so many years I now know most of the range from about 8-30C off by heart, and still haven't quite yet broken the habit of converting grams to ounces when out shopping either. 

[Plot 6B]

For an relatively easy calculation but not exactly mathematically correct.
Double the Celsius reading and add 32.
For example,
10 degrees in Celsius is  10 x 2 + 32 = 52 degrees Fahrenheit

Not a true conversion but near enough!

[mumofstig]

that's what I was taught Nige