How many NM is 1 thou?

One thou equals approximately 1.371 x 10-8 NM.

How many thou are in 1 NM?

One NM contains approximately 72,913,386 thou.

When is this conversion used?

In naval engineering where construction tolerances (thou) must survive voyage distances (NM).

Thou to Nautical Miles (thou to nmi) Converter

1 thou = 1.37149 × 10⁻⁸ nmi

1 Thou equals 1.37149 × 10⁻⁸ Nautical Miles (1 thou = 1.37149 × 10⁻⁸ nmi). Convert Thou to Nautical Miles with formula, table, and examples.

One thou equals approximately 1.371 x 10^-8 nautical miles. A nautical mile (72,913,386 thou) contains about 72.9 million thou. The thou measures ship construction hardware; the NM measures the ship's voyage.

How to Convert Thou to Nautical Miles

nmi = thou × 1.37149 × 10⁻⁸

Multiply the value in Thou by 1.37149 × 10⁻⁸

Take your value in Thou
Multiply by 1.37149 × 10⁻⁸
Read the result in Nautical Miles

Common Thou to Nautical Miles Conversions

Thou (thou)	Nautical Miles (nmi)	Status
1 thou	1.37149 × 10⁻⁸ nmi
1,000 thou	0.00001 nmi
100,000 thou	0.0014 nmi
1,000,000 thou	0.0137 nmi
10,000,000 thou	0.1371 nmi
50,000,000 thou	0.6857 nmi
72,913,386 thou	1 nmi
100,000,000 thou	1.3715 nmi
1,000,000,000 thou	13.7149 nmi

Good to Know About Thou to Nautical Miles Conversion

Ships are born in thou and live in NM. Every weld, rivet, and seal is specified in thou. Every voyage is charted in NM. The ship is the physical object where thou-precision engineering meets NM-scale operation. The ocean tests every thou of construction at every NM of voyage.

Thou to Nautical Miles: What You Need to Know

A nautical mile is about 72.9 million thou. Hull rivets at 1,000 thou (1 inch) diameter must hold across NM-scale voyages. Ship construction specs in thou determine performance over NM-scale distances.

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 →

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 →

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

Thou to Nautical Miles FAQ

One thou equals approximately 1.371 x 10^-8 NM.
One NM contains approximately 72,913,386 thou.
In naval engineering where construction tolerances (thou) must survive voyage distances (NM).

Non-Frequently Asked Questions About Thou to Nautical Miles

Questions nobody should ask - but someone did.

Steel corrodes at about 4-8 thou per year in seawater. A ship sailing 100,000 NM per year loses about 0.00004-0.00008 thou per NM. Every NM of sailing costs less than one ten-thousandth of a thou. The ocean dissolves ships extremely slowly in thou-per-NM terms.
Anti-corrosion paint is about 8-20 thou thick. A ship is repainted every 3-5 years (about 300,000-500,000 NM of sailing). So 8-20 thou of paint protects 300,000-500,000 NM. About 0.00003-0.00007 thou per NM. Paint is remarkably efficient protection.
A large ship propeller blade is about 4,000-8,000 thou (4-8 inches / 100-200 mm) thick at the root. This blade pushes the ship thousands of NM per year. Thou-scale metal moves NM-scale ships. Engineering magnification at its finest.