1.7m vs 1.8m is a difference of 10cm. That's WAY too large of a difference to not settle on using cm. Adding an additional decimal point would be oddly specific.

Specific because I know the height of my friends.

He's the shorter one and he had the most success of all of us.

It's five foot nine in metric.

Nope. 173cm is less than 5'7

It's 5 foot 8.1 inches.

Ah, so it is. The converter I used gave 5 feet 8.11 inches, and that last number tripped up my mental rule for rounding measurements in 12-inch feet such that I came out incorrectly with 5'9".

Oh. Right. 5.675853 feet is 5 Feet, 8.1102 Inches

Naturally.

Yay. I'm 5'8

No, that's how you specify your length in the metric system. I'm 5'14, or should I say 'between 6'1 and 6'2'?

I mean, so is all of these inches. Why not just say 5 foot or 6 foot... Whole mixed unit is so oddly specific...

Also my exact height (and have no idea what all these people are talking about)! Spooky, GP!