How many thou are in 1 NM?

One NM contains approximately 72,913,386 thou (about 72.9 million).

How many NM is 1 thou?

One thou equals approximately 1.371 x 10-8 NM.

Is this conversion used?

Not directly. But American shipyards specify tolerances in thou for vessels that will sail NM distances.

Nautical Miles to Thou (nmi to thou) Converter

1 nmi = 72,913,385.8268 thou

1 Nautical Mile equals 72,913,385.8268 Thou (1 nmi = 72,913,385.8268 thou). Convert Nautical Miles to Thou with formula, table, and examples.

One nautical mile equals approximately 72,913,386 thou (about 72.9 million mils). Since 1 NM = 72,913 inches and 1 inch = 1,000 thou. The NM measures sea distances; the thou measures precision engineering. Both serve ships but at different scales.

How to Convert Nautical Miles to Thou

thou = nmi × 72,913,385.8267716467

Multiply the value in Nautical Miles by 72,913,385.8267716467

Take your value in Nautical Miles
Multiply by 72,913,385.8267716467
Read the result in Thou

Common Nautical Miles to Thou Conversions

Nautical Miles (nmi)	Thou (thou)	Status
1 × 10⁻⁸ nmi	0.7291 thou
1 × 10⁻⁷ nmi	7.2913 thou
0.000001 nmi	72.9134 thou
0.00001 nmi	729.1339 thou
0.0001 nmi	7,291.3386 thou
0.001 nmi	72,913.3858 thou
0.01 nmi	729,133.8583 thou
0.1 nmi	7,291,338.5827 thou
1 nmi	72,913,385.8268 thou
10 nmi	729,133,858.2677 thou
100 nmi	7,291,338,582.6772 thou

Good to Know About Nautical Miles to Thou Conversion

American shipbuilding uses thou. American navigation uses NM. The same vessel exists in both measurement systems: built to thou tolerances, sailed across NM distances. The ship is the physical object that bridges two measurement worlds.

Nautical Miles to Thou: What You Need to Know

1 NM = 72.9 million thou. A hull rivet at 1,000 thou (1 inch = 25.4 mm) diameter holds a ship that travels thousands of NM. Ship construction specs use thou; voyage charts use NM.

What is a Nautical Mile? nmi

Exactly 1852 meters by international agreement. Based on one minute of arc of latitude at the Earth's surface. The standard unit for maritime and air navigation.

Nautical maritime navigation aviation international shipping

Learn more about Nautical Mile →

What is a Thou? thou

One thousandth of an inch (0.0254 mm). Also called a mil in the US. Used in engineering, manufacturing, and for measuring thin materials like plastic film.

Imperial engineering plastic film thickness wire gauges

Learn more about Thou →

Going the other way? Use our Thou to Nautical Miles converter.

Nautical Miles to Thou FAQ

One NM contains approximately 72,913,386 thou (about 72.9 million).
One thou equals approximately 1.371 x 10^-8 NM.
Not directly. But American shipyards specify tolerances in thou for vessels that will sail NM distances.

Non-Frequently Asked Questions About Nautical Miles to Thou

Questions nobody should ask - but someone did.

Steel hulls lose about 4-8 thou (0.1-0.2 mm) per year from corrosion. A ship sailing 36,500 NM/year loses about 0.00011-0.00022 thou per NM. That is about 1 thou per 4,500-9,000 NM. Every few thousand nautical miles costs you one-thousandth of an inch of hull.
A large container ship draws about 16 m (630,000 thou = 630 inches) of water. That is 630,000 thou below the waterline while traveling thousands of NM on the surface. The thou measures what is underwater; the NM measures where it is going.
American shipyards already use metric for international contracts. Domestic Navy contracts still use inches and thou. Converting entirely to metric would require rewriting standards, retraining workers, and recalibrating instruments. The cost outweighs the benefit. So thou persist at sea.