Feet to Nautical Miles Converter
Enter the length in feet below to convert it to nautical miles.
Convert Feet to Nautical Miles
Enter a value in feet (ft) to convert to nautical miles (nmi).
Feet to Nautical Miles Conversion Chart (1–40 Continuous)
Continuous 1 to 40 feet lookup table with exact decimals and reduced nearest 1/64 fractions. Highlighted rows mark common shop and ruler values.
| Feet (ft) | Decimal (nmi) | Fraction — Nearest 1/64 (Reduced) | Nearest 1/16 (Tape) |
|---|---|---|---|
1 ft★ Common | 0.000165 nmi | 0 nmi | 0 nmi |
2 ft★ Common | 0.000329 nmi | 0 nmi | 0 nmi |
3 ft★ Common | 0.000494 nmi | 0 nmi | 0 nmi |
4 ft | 0.000658 nmi | 0 nmi | 0 nmi |
5 ft★ Common | 0.000823 nmi | 0 nmi | 0 nmi |
6 ft★ Common | 0.000987 nmi | 0 nmi | 0 nmi |
7 ft | 0.001152 nmi | 0 nmi | 0 nmi |
8 ft★ Common | 0.001317 nmi | 0 nmi | 0 nmi |
9 ft | 0.001481 nmi | 0 nmi | 0 nmi |
10 ft★ Common | 0.001646 nmi | 0 nmi | 0 nmi |
11 ft | 0.00181 nmi | 0 nmi | 0 nmi |
12 ft★ Common | 0.001975 nmi | 0 nmi | 0 nmi |
How to Convert Feet to Nautical Miles
To convert feet to nautical miles, multiply the length by the following conversion ratio: 0.000164579 nautical miles/foot.
Since one foot is equal to 0.000164579 nautical miles, you can use this simple formula to convert:
The length in nautical miles is equal to the length in feet multiplied by 0.000164579.
For example, here's how to convert 5 feet to nautical miles using the formula above.
How Many Nautical Miles Are in a Foot?
There are 0.000164579 nautical miles in a foot, which is why we use this value in the formula above.
Our foot fraction and decimal calculator can convert feet and nautical miles, and it automatically converts the results to US customary, imperial, and SI metric values.
Feet and nautical miles are both units used to measure length. Keep reading to learn more about each unit.
How to Convert Feet to Fractional Inches (1/16″, 1/32″ & 1/64″)
Plain-language method for turning decimal inches into a standard tape-measure or machinist ruler fraction
Calculators give you a decimal number (such as 60 in), but tape measures and woodworking rulers are marked in binary fractions of an inch—most commonly 1/16″ on carpenter tapes, 1/32″ on fine woodworking rules, and 1/64″ on machinist scales.
Here is the step-by-step worked example for converting 5 feet (ft) into fractional inches:
- Find the decimal inches result: Convert 5 ft to inches to get 60 in.
- Separate the whole inches from the decimal part: Keep the whole number 60 aside, leaving the decimal remainder 0.
- Multiply the decimal part by your desired fraction denominator (16, 32, or 64) and round half up: Multiply 0 by 16, 32, or 64, then round to the nearest whole number (values ending in .5 round up).
- Reduce the fraction to lowest terms: If the rounded top number (numerator) is even, divide both top and bottom by 2 (or their Greatest Common Divisor) until the top number is odd, then combine with your whole inches.
What Is a Foot?
A foot is a US customary and imperial unit of length equal to 12 inches or 1/3 of a yard. Under the 1959 International Yard and Pound Agreement, one foot is legally defined as exactly 0.3048 meters (30.48 centimeters). [1]
Feet are widely used in the United States, Canada, and the United Kingdom for human height, building construction, real estate floor plans, and aviation altitude. Feet can be abbreviated as ft; for example, 1 foot can be written as 1 ft.
Feet can also be denoted using the ′ symbol, known as a prime (or a single quote ' for convenience). For example, 5 feet 10 inches is frequently written as 5′ 10″ or 5' 10".
Feet are measured using 12-inch rulers, carpenter's folding rules, 25-foot steel tape measures, and laser distance meters across residential framing, architecture, and surveying.
What Is a Nautical Mile?
A nautical mile is a unit of length equal to 1,852 meters (m), the base unit for length. Maritime and aviation unit defined as exactly 1,852 meters. [2]
The nautical mile is classified as a standard unit of length. Nautical Miles can be abbreviated as nmi; for example, 1 nautical mile can be written as 1 nmi.
When working with nautical miles (nmi) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, nautical miles (nmi) are widely used across large-scale industrial, bulk, and macro-level length specifications within international standard workflows, engineering documentation, and technical data sheets.
When converting length between feet (ft) and nautical miles (nmi), keep full floating-point precision (1' = 0.000164579 nmi; 1 nmi = 6,076.1154856 ft) during intermediate calculations and round only the final nautical mile figure to match your instrument tolerance.
More Foot & Nautical Mile Conversions
Need to calculate in the opposite direction? Use our nautical miles to feet calculator to switch your starting unit immediately. You can also explore related tools such as converting nautical miles to feet, converting miles to nautical miles, or converting feet to meters.
Convert from Feet
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Length Metrology Standard — Feet (ft) to Nautical Miles (nmi)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Foot (ft) & Nautical Mile (nmi)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (ft to nmi)