Length • NIST Exact

Feet Miles

ft → mi

Enter any value for instant conversion. Click on the result to copy with unit.

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NIST Exact

Based on U.S. National Institute of Standards

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Feet to Miles Formula

To convert from Feet to Miles, you can use the following formula:

Miles = Feet × NaN

This means you need to multiply your Feet value by NaN to get the equivalent value in Miles.

ft → mi Reference Table

ft mi
0.001 ft 1.893939394e-7 mi
0.002 ft 3.787878788e-7 mi
0.003 ft 5.681818182e-7 mi
0.004 ft 7.575757576e-7 mi
0.005 ft 9.46969697e-7 mi
0.006 ft 0.000001136363636 mi
0.007 ft 0.000001325757576 mi
0.008 ft 0.000001515151515 mi
0.009 ft 0.000001704545455 mi
0.01 ft 0.000001893939394 mi
0.02 ft 0.000003787878788 mi
0.03 ft 0.000005681818182 mi
0.04 ft 0.000007575757576 mi
0.05 ft 0.00000946969697 mi
0.06 ft 0.00001136363636 mi
0.07 ft 0.00001325757576 mi
0.08 ft 0.00001515151515 mi
0.09 ft 0.00001704545455 mi
0.1 ft 0.00001893939394 mi
0.2 ft 0.00003787878788 mi
0.3 ft 0.00005681818182 mi
0.4 ft 0.00007575757576 mi
0.5 ft 0.0000946969697 mi
0.6 ft 0.0001136363636 mi
0.7 ft 0.0001325757576 mi
0.8 ft 0.0001515151515 mi
0.9 ft 0.0001704545455 mi
1 ft 0.0001893939394 mi
1.5 ft 0.0002840909091 mi
2 ft 0.0003787878788 mi
2.5 ft 0.0004734848485 mi
3 ft 0.0005681818182 mi
3.5 ft 0.0006628787879 mi
4 ft 0.0007575757576 mi
4.5 ft 0.0008522727273 mi
5 ft 0.000946969697 mi
5.5 ft 0.001041666667 mi
6 ft 0.001136363636 mi
6.5 ft 0.001231060606 mi
7 ft 0.001325757576 mi
7.5 ft 0.001420454545 mi
8 ft 0.001515151515 mi
8.5 ft 0.001609848485 mi
9 ft 0.001704545455 mi
9.5 ft 0.001799242424 mi
10 ft 0.001893939394 mi
11 ft 0.002083333333 mi
12 ft 0.002272727273 mi
13 ft 0.002462121212 mi
14 ft 0.002651515152 mi
15 ft 0.002840909091 mi
16 ft 0.00303030303 mi
17 ft 0.00321969697 mi
18 ft 0.003409090909 mi
19 ft 0.003598484848 mi
20 ft 0.003787878788 mi
25 ft 0.004734848485 mi
30 ft 0.005681818182 mi
35 ft 0.006628787879 mi
40 ft 0.007575757576 mi
45 ft 0.008522727273 mi
50 ft 0.00946969697 mi
55 ft 0.01041666667 mi
60 ft 0.01136363636 mi
65 ft 0.01231060606 mi
70 ft 0.01325757576 mi
75 ft 0.01420454545 mi
80 ft 0.01515151515 mi
85 ft 0.01609848485 mi
90 ft 0.01704545455 mi
95 ft 0.01799242424 mi
100 ft 0.01893939394 mi
120 ft 0.02272727273 mi
125 ft 0.02367424242 mi
130 ft 0.02462121212 mi
140 ft 0.02651515152 mi
150 ft 0.02840909091 mi
160 ft 0.0303030303 mi
175 ft 0.03314393939 mi
180 ft 0.03409090909 mi
200 ft 0.03787878788 mi
225 ft 0.04261363636 mi
250 ft 0.04734848485 mi
275 ft 0.05208333333 mi
300 ft 0.05681818182 mi
350 ft 0.06628787879 mi
400 ft 0.07575757576 mi
450 ft 0.08522727273 mi
500 ft 0.0946969697 mi
600 ft 0.1136363636 mi
700 ft 0.1325757576 mi
750 ft 0.1420454545 mi
800 ft 0.1515151515 mi
900 ft 0.1704545455 mi
1000 ft 0.1893939394 mi
1200 ft 0.2272727273 mi
1250 ft 0.2367424242 mi
1500 ft 0.2840909091 mi
1750 ft 0.3314393939 mi
2000 ft 0.3787878788 mi
2500 ft 0.4734848485 mi
3000 ft 0.5681818182 mi
4000 ft 0.7575757576 mi
4500 ft 0.8522727273 mi
5000 ft 0.946969697 mi
6000 ft 1.136363636 mi
7000 ft 1.325757576 mi
7500 ft 1.420454545 mi
8000 ft 1.515151515 mi
9000 ft 1.704545455 mi
10000 ft 1.893939394 mi
15000 ft 2.840909091 mi
20000 ft 3.787878788 mi
25000 ft 4.734848485 mi
50000 ft 9.46969697 mi
75000 ft 14.20454545 mi
100000 ft 18.93939394 mi

Values based on NIST SP 811 conversion factors

Why Convert Feet to Miles?

Converting between feet (ft) and miles (mi) is one of the most common length conversions. Whether for engineering, cooking, travel, or science, knowing how to quickly convert ft to mi saves time and prevents errors.

Length conversions between ft and mi are fundamental in construction, manufacturing, and international trade. Architects rely on precise conversions when adapting building plans between metric and imperial standards — a 1% error on a 30-meter wall translates to 30 cm of misalignment. Travelers frequently convert between kilometers and miles for road trips, while online shoppers need length conversions to verify clothing sizes, furniture dimensions, and screen diagonals across international retailers. In athletics, track distances (100m, 1500m, marathon) must be precisely converted for record comparisons across different measurement traditions.

How to Convert Feet to Miles

To convert feet to miles, use the following formula:

mi = ft × 0.0001893939394

Example: 1 ft = 0.0001893939394 mi

For example, 5 ft = 0.000946969697 mi, 10 ft = 0.001893939394 mi, and 100 ft = 0.01893939394 mi. For larger values, 1000 ft = 0.1893939394 mi. Conversely, 1 mi = 5280 ft. Our calculator above performs this conversion instantly with full precision — no rounding errors.

Common Mistakes to Avoid

  • Confusing similar units: confusing nautical miles with regular miles, or yards with meters.
  • Decimal errors: moving the decimal point the wrong way (e.g., 100 cm = 1 m, not 10 m).
  • Approximation: assuming an inch is exactly 2.5 cm (it's 2.54 cm).

Pro Tips

  • Use 'approx' for mental math: 1 km is roughly 0.6 miles (or 2/3 for quick estimates).
  • Visualize: A meter is about a guitar length; an inch is a thumb width.
  • Ruler check: Most rulers show cm and inches together—great for quick checks.

What is a Foot?

The foot (ft) is a unit of length in the Imperial and US customary systems. It is historically based on the human foot size. Since the International Yard and Pound Agreement of 1959, one foot has been exactly defined as 0.3048 meters.

Feet are primarily used in the United States, United Kingdom, and Canada. Common applications include measuring height, building dimensions, real estate, and aviation altitude.

What is a Mile?

The mile (mi) is a unit of length in the Imperial and US customary systems. The international mile is exactly defined as 1,609.344 meters. Historically, it originated from the Roman mile (1,000 paces).

Miles are the primary unit for expressing long distances and speed limits in the United States and the United Kingdom. They are also used in maritime and aviation contexts (nautical miles).

Frequently Asked Questions

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