Convert Mils to Nautical Miles
1 mil equals 1.371490281 × 10⁻⁸ nautical miles (nmi).
1 mil = 1.371490281e-8 nmi
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk mil to nautical mile converter to paste a column from Excel.
How to Convert Mil to Nautical Mile
- 1 mil = 1.371490281 × 10⁻⁸ nmi
- 1 nmi = 72913385.83 mil
- Example: convert 15 mil to nmi: 15 mil = 15 × 1.371490281 × 10⁻⁸ nmi = 2.057235421 × 10⁻⁷ nmi
Formula
nmi = mil × 1.371490280778 × 10⁻⁸
or nmi = mil ÷ 72913385.82677
Derivation from SI units:
- 1 mil = 0.001 in = 25.4 µm (exact)
- 1 nmi = 1852 m (exact, by international agreement, 1929)
- 1 mil = 0.0000254 m ÷ 1852 m per nmi = 1.371490280778 × 10⁻⁸ nmi
Both units are defined exactly, so the factor is exact. Mil definition: mil; Nautical Mile definition: nautical mile.
Worked examples
- A reading of 4 mil converts to 5.485961123 × 10⁻⁸ nmi.
4 mil × 1.371490281 × 10⁻⁸ = 5.485961123 × 10⁻⁸ nmi - A value of 15 mil is 2.057235421 × 10⁻⁷ nmi.
15 mil × 1.371490281 × 10⁻⁸ = 2.057235421 × 10⁻⁷ nmi
Mil to Nautical Mile conversion table
| Mils (mil) | Nautical Miles (nmi) |
|---|---|
| 0.5 mil | 6.857451404 × 10⁻⁹ nmi |
| 1 mil | 1.371490281 × 10⁻⁸ nmi |
| 1.5 mil | 2.057235421 × 10⁻⁸ nmi |
| 2 mil | 2.742980562 × 10⁻⁸ nmi |
| 3 mil | 4.114470842 × 10⁻⁸ nmi |
| 4 mil | 5.485961123 × 10⁻⁸ nmi |
| 5 mil | 6.857451404 × 10⁻⁸ nmi |
| 6 mil | 8.228941685 × 10⁻⁸ nmi |
| 8 mil | 1.097192225 × 10⁻⁷ nmi |
| 10 mil | 1.371490281 × 10⁻⁷ nmi |
| 15 mil | 2.057235421 × 10⁻⁷ nmi |
| 20 mil | 2.742980562 × 10⁻⁷ nmi |
| 40 mil | 5.485961123 × 10⁻⁷ nmi |
| 50 mil | 6.857451404 × 10⁻⁷ nmi |
| 100 mil | 0.000001371490281 nmi |
Where it's used
Mils are used for plastic film and bag thickness, while nautical miles appear in marine and air navigation. Both measure length and distance, so the conversion is a fixed factor.
Mil to other length units
| Conversion | 1 mil equals |
|---|---|
| mil to meter | 0.0000254 m |
| mil to kilometer | 2.54 × 10⁻⁸ km |
| mil to centimeter | 0.00254 cm |
| mil to millimeter | 0.0254 mm |
| mil to micrometer | 25.4 µm |
| mil to nanometer | 25400 nm |
| mil to angstrom | 254000 Å |
| mil to mile | 1.578282828 × 10⁻⁸ mi |
| mil to yard | 0.00002777777778 yd |
| mil to foot | 0.00008333333333 ft |
| mil to inch | 0.001 in |
| mil to nautical mile | 1.371490281 × 10⁻⁸ nmi |
Frequently asked questions
How many nautical miles are in 1 mil?
1 mil = 1.371490281 × 10⁻⁸ nmi.
How do I convert mils to nautical miles?
Multiply the value in mil by 1.371490281 × 10⁻⁸, or divide it by 72913385.83. For example, 15 mil × 1.371490281 × 10⁻⁸ = 2.057235421 × 10⁻⁷ nmi.
Is the mil to nmi conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "mil (0.001 in)".
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "nautical mile".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Mils to Nautical Miles. Retrieved October 17, 2026, from https://scientificconverters.com/length/mils-to-nautical-miles/
IEEE
Scientific Converters, "Convert Mils to Nautical Miles," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/length/mils-to-nautical-miles/