It seems that people either think in Fahrenheit or Celsius and are often unable to really ‘feel’ what a temperature is unless they have it in the units that they are used to. That is often the case with weather temperatures anyway.
But not only do we have different measurements for weather in Celsius and Fahrenheit but also when cooking, some ovens use one and some use another temperature. Often it differs from country to country but in some places you can buy ovens that read either celsius or Fahrenheit.
Anyway, to convert from one to the other manually you do the following:
Celsius to Fahrenheit
multiply by 8 and divide by 5 then add 32
Fahrenheit to Celsius
Take off 32 then multiply by 5 and divide by 8
These are not totally accurate figures but this is the easiest way to remember it if you need to get an approximate number and you don’t have google to hand! The easiest way is to just type in Google the conversion that you want like ’28 celsius to fahrenheit’ and it will tell you the answer.