Unit conversion, explained properly
15 guides on feet to miles and the units people confuse them with — the nautical mile, the square mile and the mil. Every one links back to a working converter, and the conversion chart has the common values already worked out.
Fundamentals
How the units work
Feet per Second vs Miles per Hour: Speed Conversions
60 mph is exactly 88 ft/s. Where the factor comes from and why drivers should know it.
Fundamentals · 6 min read · 11 FAQs
The History of the Mile: Why 5,280 Feet?
A Roman marching unit met an English ploughing unit, and Parliament picked a side. The result is 5,280.
Fundamentals · 7 min read · 11 FAQs
How Many Feet Are in a Mile? A Complete Conversion Guide
5,280 feet — exactly, by definition. Where the number came from, how to use it in both directions, and why it isn't round.
Fundamentals · 7 min read · 12 FAQs
Aviation
Altitude and navigation
Airplane Altitude: Converting Feet to Miles
35,000 ft is 6.63 miles — a 10K race, straight up. What each altitude band actually means.
Aviation · 7 min read · 12 FAQs
What Is a Nautical Mile? How It Differs From a Statute Mile
6,076.1 feet, and it equals one minute of latitude. That single property is why it survived.
Aviation · 7 min read · 11 FAQs
Sport
Running, racing and climbing
Elevation Feet to Miles for Hiking and Mountains
How to turn 4,000 ft of gain into a number you can actually plan a day around.
Sport · 6 min read · 11 FAQs
Feet to Miles for Runners: Track and Race Distances
Track is metric, road is imperial, elevation is in feet. The numbers that reconcile them.
Sport · 6 min read · 11 FAQs
Miles to Feet: Converting Race Distances and Road Signs
Why exit signs use quarters, what '1/2 MILE' is in feet, and how race courses are actually measured.
Sport · 5 min read · 11 FAQs
Trade & Survey
Construction, land and survey
Square Feet to Square Miles for Land Measurement
The factor is 27,878,400, not 5,280. Getting that wrong is off by a factor of five thousand.
Trade & Survey · 6 min read · 11 FAQs
Linear Feet to Miles for Contractors and Surveyors
Linear feet convert exactly like feet. The trap is board feet and square feet, which don't.
Trade & Survey · 5 min read · 11 FAQs
Reference
Reference and tooling
Common Unit Conversion Mistakes with Feet and Miles
Six errors that look plausible and aren't — from squaring the wrong factor to trusting the wrong mile.
Reference · 8 min read · 11 FAQs
Feet vs Mil vs Mile: Three Units People Confuse
One is a thickness, one is a distance, and they differ by 63 million times. Here is how to keep them straight.
Reference · 6 min read · 11 FAQs
Feet to Miles Conversion Chart: Common Distances at a Glance
From 200 ft to 100,000 ft: the values people actually search for, converted and put into context.
Reference · 6 min read · 12 FAQs
Convert Feet to Miles in Excel and Google Sheets
=A1/5280, =CONVERT(A1,"ft","mi"), or a named formula — and the text-formatting trap that breaks all three.
Reference · 6 min read · 11 FAQs
Going the other way, miles to feet does the reverse conversion. If you want a figure already worked out, conversion chart lists the common ones, and about & methodology documents every constant used here and where it comes from.
Related conversions: ft/s to mph for speed, sq ft to sq miles for land area, and feet to mil for the unit people most often confuse with the mile.
Skip the reading — just convert
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