torga
Autocross Champion
I got good at eyeballing smaller metric measurements (<20 cm) after finding out that the width of my pinky nail is exactly 1cm. Made things easy from then.I absolutely agree on this. I can’t stand the fact that we have the nerve to call ours “standard”.
Still trying to get a feel for temperature. My very, very loose way of converting is F = 2*C + 30 (backwards is C = (F - 30)/2 ). It's obviouly not exact, but way faster to do in my head than F = (9/5)*C + 32 or C = (F + 32)*(5/9). And it's accurate enough for the typical 32-100F that most people experience throughout the year.
My gf grew up in Europe, so I had to figure out a quick way to give her a response in Celsius when she asks me what the weather's gonna be like.