mm to Nautical Miles Converter (mm to nmi)

How to convert millimeters to nautical miles

Formulanmi = mm × 5.399568035×10⁻⁷

Because one nautical mile equals 1,852,000 millimeters, you can also divide: nmi = mm ÷ 1,852,000.

A millimeter is smaller than a nautical mile: it takes 1,852,000 millimeters to make one nautical mile.

Worked examples

1 millimeter1 mm × 5.399568035×10⁻⁷ = 5.399568035×10⁻⁷ nmi
5 millimeters5 mm × 5.399568035×10⁻⁷ = 0.000002699784017 nmi
10 millimeters10 mm × 5.399568035×10⁻⁷ = 0.000005399568035 nmi
20 millimeters20 mm × 5.399568035×10⁻⁷ = 0.00001079913607 nmi
100 millimeters100 mm × 5.399568035×10⁻⁷ = 0.00005399568035 nmi

Millimeters to nautical miles conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Millimeters to nautical miles: 0.1–10 mm
Millimeters (mm)	Nautical miles (nmi)
0.1 mm	5.399568×10⁻⁸ nmi
0.25 mm	1.349892×10⁻⁷ nmi
0.5 mm	2.699784×10⁻⁷ nmi
1 mm	5.399568×10⁻⁷ nmi
2 mm	0.0000010799136 nmi
3 mm	0.0000016198704 nmi
4 mm	0.0000021598272 nmi
5 mm	0.000002699784 nmi
6 mm	0.0000032397408 nmi
7 mm	0.0000037796976 nmi
8 mm	0.0000043196544 nmi
9 mm	0.0000048596112 nmi
10 mm	0.000005399568 nmi

Millimeters to nautical miles: 12–1,000 mm
Millimeters (mm)	Nautical miles (nmi)
12 mm	0.0000064794816 nmi
15 mm	0.0000080993521 nmi
20 mm	0.000010799136 nmi
25 mm	0.00001349892 nmi
30 mm	0.000016198704 nmi
40 mm	0.000021598272 nmi
50 mm	0.00002699784 nmi
75 mm	0.00004049676 nmi
100 mm	0.00005399568 nmi
250 mm	0.0001349892 nmi
500 mm	0.0002699784 nmi
1,000 mm	0.0005399568 nmi

About the units

Millimeter (mm)

One thousandth of a metre. Millimetres are the standard unit on engineering drawings, rulers and rainfall gauges; a credit card is about 0.76 mm thick. One millimeter equals 0.001 meters (m).

Nautical mile (nmi)

Exactly 1,852 m, originally one minute of latitude. Nautical miles are used in aviation and at sea, together with the knot (one nautical mile per hour).

Frequently asked questions

How many nautical miles are in one millimeter?

There are 5.399568035×10⁻⁷ nautical miles in one millimeter, and this value is exact by definition.

How do I convert millimeters to nautical miles?

Multiply the number of millimeters by 5.399568035×10⁻⁷. For example, 10 mm × 5.399568035×10⁻⁷ = 0.000005399568035 nmi.

How many millimeters are in one nautical mile?

One nautical mile equals 1,852,000 millimeters. That is the reverse factor, 1 ÷ 5.399568035×10⁻⁷.

What is 10 millimeters in nautical miles?

10 mm = 0.000005399568035 nmi.

Is this mm to nmi converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.

mm to Nautical Miles Converter