fastandcurious@lemmy.world to Memes@lemmy.ml · 9 months agoThis postlemmy.worldimagemessage-square58fedilinkarrow-up1487arrow-down138
arrow-up1449arrow-down1imageThis postlemmy.worldfastandcurious@lemmy.world to Memes@lemmy.ml · 9 months agomessage-square58fedilink
minus-squareALoafOfBread@lemmy.mllinkfedilinkarrow-up6arrow-down1·edit-29 months agoFor easier mental C -> F conversion, take (2C)-(2C/10)+32 where C = temp in c. 16c × 2 = 32 32/10 = 3.2 32 - 3.2 = 28.8 28.8+32 = 60.8, which is exactly correct. Or if you just want a rough estimate for weather, 2C+(22 to 32) gets you close enough with easier mental math 16x2+30 = 62, just 1 degree off. 37x2+30 = 104 is like 6 degrees off, though. The further from zero you are, the smaller the number you should add.
For easier mental C -> F conversion, take (2C)-(2C/10)+32 where C = temp in c.
Or if you just want a rough estimate for weather, 2C+(22 to 32) gets you close enough with easier mental math