31–40 of 57 posts
Or we can stop using freedom units and join the rest of the world. Take a small step to make this happen right now: set your phone and thermostat to show you the temperature in Celsius. I did this and my kids are growing up with an intuitive understanding of what 20 degrees C feels like.
Personally I think the usual issue with the standard conversion is doing 9/5, but it actually isn't that bad. The way I convert is C * 2 - C / 5 + 32, where I just round C to the nearest multiple of 5 before dividing to make it easy. 24C times 2 is 48, 24 / 5 ~= 5, so 43 + 32 = 75. Off by less than a half a degree, which (thinking about it for 15 seconds or so) I think is guaranteed under this system. The most import…
Earlier quoted context omitted.
Liters don’t come up much and those are going to be a lot harder given that every gas station is in gallons only. Meters no, centimeters yes. They are 6 so they mostly measure small stuff. I use grams for cooking too. Who thought that “1 cup of cheese” was a reasonable measurement?
>Who thought that “1 cup of cheese” was a reasonable measurement?, It’s easier to use a 1 cup scoop to grab something quickly than it is to weigh something out.
Personally I think the usual issue with the standard conversion is doing 9/5, but it actually isn't that bad. The way I convert is C * 2 - C / 5 + 32, where I just round C to the nearest multiple of 5 before dividing to make it easy. 24C times 2 is 48, 24 / 5 ~= 5, so 43 + 32 = 75. Off by less than a half a degree, which (thinking about it for 15 seconds or so) I think is guaranteed under this system. The most import…
It's even easier if you consider that C/5 is 1/10 of 2C. So, just double C and then subtract 10% of the result.
32°F = 0°C
41°F = 5°C
50°F = 10°C
59°F = 15°C
68°F = 20°C
77°F = 25°C
86°F = 30°C
95°F = 35°C
Earlier quoted context omitted.
>Who thought that “1 cup of cheese” was a reasonable measurement?, It’s easier to use a 1 cup scoop to grab something quickly than it is to weigh something out.
Which cup?
The way I convert is to remember that 32°F is 0°C and then count by "nines" for Fahrenheit to get the desired temperature in Celsius. 32°F = 0°C 41°F = 5°C 50°F = 10°C 59°F = 15°C 68°F = 20°C 77°F = 25°C 86°F = 30°C 95°F = 35°C It's also pretty easy to remember that 10°C = 50°F and 35°C = 95°F if you want to go forward or back from there with the same counting method.
If you know the stops of the 6 train in Manhattan, the trick is that the stops are in Fahrenheit starting at 33rd street = 0˚ C. Each stop up town is +5˚C. Stays within 1˚C until 110th street.
Being a programmer I know 16*2 = 32 ~90. And its easy to remember that 0 is freezing... Covers most ranges of everyday conversation of temperature with non US friends :)