Length and Area
nmitoftm
Convert nautical miles (nmi) to fathoms (ftm).
Factor1 nmi = 1012.686 ftm
Converter
nmi
Accepts numbers or expressions, e.g. 150 + 14.7
Result
ftm
Rendered to 6 significant figures.
Formula
Formula
ftm = nmi × 1012.686
Multiply any value in nautical miles by 1012.686 to obtain the value in fathoms.
Worked example
Convert 1 nmi to ftm.
- 01Start with 1 nmi.
- 02Multiply by the conversion factor: 1 × 1012.686 = 1012.69 ftm.
Result1 nmi = 1012.69 ftm
Conversion table
| nmi | ftm |
|---|---|
| 1 | 1012.7 |
| 2 | 2025.4 |
| 5 | 5063.4 |
| 10 | 10127 |
| 20 | 20254 |
| 50 | 50634 |
| 100 | 1.0127e+5 |
| 200 | 2.0254e+5 |
| 500 | 5.0634e+5 |
| 1000 | 1.0127e+6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from nmi to ftm?
1 nmi equals 1012.686 ftm. To convert, multiply the value in nautical miles by 1012.686.
How do I convert 1 nmi to ftm?
1 nmi = 1012.69 ftm. For any value, multiply by 1012.686.
How do I convert ftm back to nmi?
Divide by the same factor — or equivalently, multiply by 0.000987473. So 1 ftm = 0.000987473 nmi.
When would I need to convert nautical mile to fathom?
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?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).