Lifehacks

206 readers

466 users here now

Efficiency in all walks of life.

founded 1 year ago

MODERATORS

Varyk@sh.itjust.works

449

You can use Fibonacci numbers to approximately convert miles to km (infosec.pub)

submitted 1 day ago by cm0002@europe.pub to c/lifehacks@sh.itjust.works

65 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[–] ramble81@lemmy.zip 13 points 23 hours ago (5 children)

To go from km to mi I always leaned “multiply by 6 and move the decimal one to the left”. So 6km is ~3.6mi. Or 10km is just about 6mi.

[–] 0_0j@lemmy.world 1 points 6 hours ago

Thank you, will definitely use this now on

[–] pupbiru@aussie.zone 1 points 9 hours ago* (last edited 9 hours ago)

or add half and then 10% (because it’s 1.6km to the mile): easier than multiplying decimals or large numbers by 6, and the inverse is 0.6mi=1km so easy to remember both ways (same thing but don’t “add” just start from 0)

[–] Scavenger8294@feddit.org 0 points 8 hours ago

glad I did not learn conversion in school. Nobody uses miles where i live

[–] davidagain@lemmy.world 7 points 23 hours ago

Yes. That uses the 3:5 ratio.

[–] untorquer@lemmy.world 1 points 17 hours ago

I used to remember because space (Karman line) is 100km or 62mi up. I guess it helps to be a space nerd for that one. Kind of just figure 1.6 going the other way.