Millimeters to nautical miles
nautical miles = millimeters × 5.399568e-7
Reverse: nautical miles to millimeters
How to convert millimeters to nautical miles
One millimeter is 5.399568e-7 nautical miles, so multiply the number of millimeters by 5.399568e-7. For example, 20 millimeters is 20 × 5.399568e-7 = 0.0000108 nautical miles. To go back, divide by the same number, or multiply by 1,852,000.
Quick estimate
Multiplying by about 5e-7 gets within 7.4% of the exact answer, which is enough to check that a result makes sense.
Where it comes up
Length conversions come up in DIY and building plans, running and cycling distances, maps, clothing sizes and travel between countries that use metric and imperial units.
| millimeters | nautical miles |
|---|---|
| 1 mm | 5.399568e-7 nmi |
| 2 mm | 0.00000108 nmi |
| 3 mm | 0.00000162 nmi |
| 4 mm | 0.00000216 nmi |
| 5 mm | 0.0000027 nmi |
| 6 mm | 0.00000324 nmi |
| 7 mm | 0.00000378 nmi |
| 8 mm | 0.00000432 nmi |
| 9 mm | 0.00000486 nmi |
| 10 mm | 0.0000054 nmi |
| 11 mm | 0.00000594 nmi |
| 12 mm | 0.00000648 nmi |
| 13 mm | 0.00000702 nmi |
| 14 mm | 0.00000756 nmi |
| 15 mm | 0.0000081 nmi |
| 16 mm | 0.00000864 nmi |
| 17 mm | 0.00000918 nmi |
| 18 mm | 0.00000972 nmi |
| 19 mm | 0.00001026 nmi |
| 20 mm | 0.0000108 nmi |
| 25 mm | 0.0000135 nmi |
| 30 mm | 0.0000162 nmi |
| 40 mm | 0.0000216 nmi |
| 50 mm | 0.000027 nmi |
| 60 mm | 0.0000324 nmi |
| 70 mm | 0.0000378 nmi |
| 75 mm | 0.0000405 nmi |
| 80 mm | 0.0000432 nmi |
| 90 mm | 0.0000486 nmi |
| 100 mm | 0.000054 nmi |
| 120 mm | 0.00006479 nmi |
| 150 mm | 0.00008099 nmi |
| 200 mm | 0.00010799 nmi |
| 250 mm | 0.00013499 nmi |
| 300 mm | 0.00016199 nmi |
| 400 mm | 0.00021598 nmi |
| 500 mm | 0.00026998 nmi |
| 750 mm | 0.00040497 nmi |
| 1,000 mm | 0.00053996 nmi |
| 1,500 mm | 0.00080994 nmi |
| 2,000 mm | 0.00107991 nmi |
| 5,000 mm | 0.00269978 nmi |
| 10,000 mm | 0.00539957 nmi |
Questions
How many nautical miles are in a millimeter?
5.399568e-7 nautical miles.
How do I convert millimeters to nautical miles in a spreadsheet?
Put the value in A1 and type =A1*5.399568e-7, then fill the formula down the column.
Are the values in the table exact?
They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.