There's a very rough and ready conversion you can probably do in your head.

To convert °C to °F, double the figure and add 30.
To convert the other way, subtract 30 and halve the result.

This works for the usual day and night temperature ranges, but falls down at very high or low temperatures. There's a handy formula you can use if you need accurate conversion, found here... http://www.csgnetwork.com/tempconvjava.html

At school it was pretty much metric, apart from home economics - that was all pounds and ounces for some reason.

Then, when I studied engineering, metric and imperial were used all the time. Our micrometers were in thousandths and our rules were in millimeters.

Yes but the Brits also measure the cold in Centigrade and the heat in Fahrenheit.

What? Do you have an example of this? I've only ever used C for temperature.

Purely anecdotal, but I do tend to do that. Celsius is simply much better for cold weather - 0 = ice is so easy to deal with - but for hot weather Fahrenheit seems better; 90f sounds much hotter than 27c. It's purely a mental thing - I know 27c is about as hot as 90f but nevertheless that's the way it is. I suspect it's because all the 'phwoar what a scorcher!' headlines in the tabloids generally use f rather than c for emphasis.

Jon

Ah yes, I have seen that. Personally I use C for hot and cold weather though.

+1

If you said it was "90F" outside I wouldn't have a clue, but say "27C" and I know it's hot.

That's because it is. 90f would be approx. 32c.

I can never remember the conversion but I know that 0c=32f and 28c=82f. Therefore I could draw a little graph if required.

C to F
(C * 9)/5 then add 32

F to C
(F - 32)/9 then multiply by 5

I use metric at work (laboratory), miles for car journeys, feet/inches for height, lb/oz and stone for weight.

I've always found it much easier to use imperial for cooking as it's a lot easier to remember things and it makes adding things like eggs much easier. For example, basic sponge recipe - 6oz butter, 6oz sugar, 6oz flour plus 3 eggs. In metric that's be about 170 g of the dry ingredients and 3 eggs. It also scales up much better in imperial.

It's quite easy to work out the conversion if you remember that:

• 0°C = 32°F
• 100°C = 212°F

As for units I'll work in pretty much anything: Metric, Imperial, SI. I tend to use the units that those around me are most comfortable with. However, my default is Imperial.

[Edited for units failure]

I find it very easy to remember 28 = 82 for obvious reasons.

Mais non, c'est impossible!!

Can't we all start using Kelvin? And when do I get my warp core?

++1

I run my house at 290 and bloody women still complain it's cold

Actually I do neither. I measure temperature in Celcius. Fahrenheit is meaningless to me.

I also prefer kilometres, it makes car trips go quicker as well on a purely psychological level.

I do.