Why is Venus hell and Earth an Eden?

Re:Why is Venus hell and Earth an Eden? by bryant on Monday September 22, 2025 @09:04AM (#45332868)

for what it's worth: add 9 degrees F (or 18 if it's easier to remember) for every 5 degrees C (10 C, easier), and peg 32F to 0C. You get:

-40F=-40C

-22F=-30C

-4F =-20C

14F =-10C

32F = 0C

50F = 10C

68F = 20C

86F = 30C

104F= 40C

and then approximate in between from there. It's quick enough for me now that I skip the 2x+30.

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Re:Why is Venus hell and Earth an Eden? by noslenwerdna on Monday September 22, 2025 @11:29AM (#45334828)

These points make it easy to remember for me, adding ~5C for 10 F.

40 F = 4 C (forty is four)

50 F = 10 C

60 F = 16 C (sixty is sixteen)

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Re:Why is Venus hell and Earth an Eden? by abduhl on Monday September 22, 2025 @10:07AM (#45333688)

In this HN subthread: users slowly converge on the conversion formula for Celsius to Fahrenheit (32+9C/5) in greater and greater precision while calling it an “approximation.”

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Re:Why is Venus hell and Earth an Eden? by euroderf on Monday September 22, 2025 @10:49AM (#45334253)

10c is 50f (easy to remember) 27c is 81f (it's all threes!)

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Re:Why is Venus hell and Earth an Eden? by freedomben on Monday September 22, 2025 @12:49PM (#45336099)

Always interesting what's easier for some people. Personally 9/5x + 32 is much easier for me to remember and calculate

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