Length and Area
nmtonmi
Convert nanometres (nm) to nautical miles (nmi).
Factor1 nm = 5.399568e-13 nmi
Converter
nm
Accepts numbers or expressions, e.g. 150 + 14.7
Result
nmi
Rendered to 6 significant figures.
Formula
Formula
nmi = nm × 5.399568e-13
Multiply any value in nanometres by 5.399568e-13 to obtain the value in nautical miles.
Worked example
Convert 1.852e+12 nm to nmi.
- 01Start with 1.852e+12 nm.
- 02Multiply by the conversion factor: 1.852e+12 × 5.399568e-13 = 1 nmi.
Result1.852e+12 nm = 1 nmi
Conversion table
| nm | nmi |
|---|---|
| 1 | 5.3996e-13 |
| 2 | 1.0799e-12 |
| 5 | 2.6998e-12 |
| 10 | 5.3996e-12 |
| 20 | 1.0799e-11 |
| 50 | 2.6998e-11 |
| 100 | 5.3996e-11 |
| 200 | 1.0799e-10 |
| 500 | 2.6998e-10 |
| 1000 | 5.3996e-10 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from nm to nmi?
1 nm equals 5.399568e-13 nmi. To convert, multiply the value in nanometres by 5.399568e-13.
How do I convert 1 nm to nmi?
1 nm = 5.39957e-13 nmi. For any value, multiply by 5.399568e-13.
How do I convert nmi back to nm?
Divide by the same factor — or equivalently, multiply by 1.852e+12. So 1 nmi = 1.852e+12 nm.
When would I need to convert nanometre to nautical mile?
Length conversions appear in piping, layout, and mechanical drawings — particularly when reconciling imperial fittings or instrument lengths with metric plant drawings.
Is the conversion exact?
Yes. Both nm and nmi are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).