[NaOH]

>Most people in the United States seem to have some conceptualization of what a meter is so it usually works quite well as it’s also easier for me to estimate meters instead of feet.

I think most people in the US just convert the meter to the three-foot yard measure. I doubt people would notice if you did the same thing in order to give estimates in feet. I work in metric weights but speak to people using US Imperial weights, so I regularly say something is "about 4 ounces," and the same idea of something being "about 1000 feet" would likely be fine since you're already estimating.