5 ms·
C is roughly (F - 30)/2, not too bad. To make my life easier I also measure lb as 1/2 kg and driving distances as time.
by jimbobimbo 12y ago
C is roughly (F - 30)/2, not too bad.
To make my life easier I also measure lb as 1/2 kg and driving distances as time.
- xxs 12y agoI still remember the formula by heart C=5/9*(F-32), learned it a kid while reading books on electronics. Mentally I still use it to convert while watching a movie for example. However I still don't know how people prefer it over Celsius, the latter feels a lot more natural. Pound to Kg is rather easy as it has to be multiplies by 2.2, adding 1/10 after multiplying by 2.
- deleted 12y ago[deleted]
- BrandonM 12y ago> C is roughly (F - 30)/2, not too bad. A few months ago, I was concerned about the inaccuracy of this rough conversion. It's actually accurate to within ±3°F for all temperatures -5°C to 25°C (23°F to 77°F). If you're OK with ±5°F, it works for -15°C to 35°C (5°F to 95°F). So the conversion works pretty well for the vast majority of environmental conditions. C = (F - 30) / 2 and F = C * 2 + 30 are great approximations.