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I have family/friends that visit often from Celsius using countries and every time the weather comes up, they ask me what xx F is in C. Tired of trying to answe
by kchhina 8y ago
I have family/friends that visit often from Celsius using countries and every time the weather comes up, they ask me what xx F is in C. Tired of trying to answer them, I figured out a quick, ballpark conversion --
50 deg F = 10 deg C
For every 10 def F, there's roughly a 6 deg C change.
So (approximately)
40 deg F = 4 deg C
60 deg F = 16 deg C
etc.
I find that it works reasonably well for frequent requests from said Celsius understanding visitors.
*Edited for line breaks
- roryisok 8y agoTook me a while to figure that out until I remembered that our zeroes are not the same. -40 is the same in both though, as far as I recall
- cimmanom 8y agoThe easiest ballpark conversion I know is: F -> C: subtract 32, divide by 2. So 76F = 44/2 ~= 22C C -> F: multiply by 2, add 32. So 15C = 30+32 ~= 62F The factor of 2 isn’t precise (the actual ratio is closer to 5/9). But it only really diverges at hotter temps: so 95F is actually 35C, whereas this formula will give you 31.5C, which is more like 89F; but 50F will give you 9C (48F), when the correct value is 10C. For most weather purposes it’s close enough - at least to decide what to wear - and it’s easy for most people to calculate.
- CarolineW 8y agoVery close over human ranges: C = (F-30) / 2 F = 2 * C + 30 Exact conversions: C = (F-32) * 5 / 9 F = C / 5 * 9 + 32 Table: C F -40 -40 0 32 (Approx water freezing point) 10 50 20 68 ( ~ 70) ~21 70 30 86 37 98.6 (body temperature) 40 104 50 122 ... ... 100 212 (Approx water boiling point)