Alright, so the other day I found myself staring at a measurement: 1700 mm. Now, for certain things, especially when I’m trying to picture how big something is in a room or for a project, millimeters don’t always click in my head right away. I tend to think better in feet and inches for lengths like that.

Figuring Out the First Step: Millimeters to Inches
So, my first thought was, “Okay, how do I get 1700 mm into something more familiar?” Inches usually comes to mind first. I remembered the conversion factor: 1 inch is exactly 25.4 millimeters. That’s a handy one to keep tucked away.
I pulled out my phone – just used the basic calculator app, nothing special. I did this:
- Punched in 1700 (for the millimeters).
- Then divided that by 25.4 (the millimeters in one inch).
The number that popped up was 66.929133… and so on. I just mentally rounded it to about 66.93 inches for the next step. Makes the brain work a little less hard, you know?
Getting to Feet: The Next Conversion
So now I had 66.93 inches. Better, but I still wanted to see that in feet to really get a good feel for it. Most of us know that there are 12 inches in 1 foot. Pretty standard stuff.
Back to the calculator I went:

- I took that 66.929133… number (might as well use the more accurate one if it’s still there).
- And divided it by 12.
This gave me 5.577427… feet. So, a little over five and a half feet. Starting to make more sense now!
Breaking it Down Further: Feet and Inches
Sometimes, just saying “5.577 feet” is fine, but I often like to see it as ‘X feet and Y inches’. It gives a clearer picture, I think.
So, we obviously have 5 whole feet from that 5.577 number.
Then there’s that leftover bit: 0.577427… feet. To turn just that decimal part back into inches, I multiplied it by 12:
- 0.577427 (the part after the decimal point for feet)
- multiplied by 12 (inches per foot)
And that calculation came out to about 6.929 inches. So, you could say it’s 5 feet and roughly 6.93 inches. Or, pretty darn close to 5 feet and 7 inches if you’re not needing to be super precise down to the last tiny fraction.

And That’s How I Got It
So, after those couple of steps, I had my answer. That 1700 mm is about 5.58 feet, or if you like it broken down, it’s 5 feet and about 6.93 inches. It’s not too complicated once you remember those key conversion numbers. Just a bit of simple arithmetic, really. Hope walking through my little process on this helps someone else out there if they ever need to do the same kind of quick conversion!