Convert Inches to Nautical miles
1 inch is 0.00001371 nmi. One inch is exactly 0.0000137149028078 nautical miles.
One inch is 1.3715 × 10^-5 nautical miles. To convert inches to nautical miles, multiply by 1.3715 × 10^-5; to go the other way, divide by 1.3715 × 10^-5 or multiply by 72913.386. The relation is exact but the figure is not: it is a rounding of a number that does not terminate, and it follows from NIST. Exactly 25.4 millimeters since the 1959 international yard and pound agreement, and one twelfth of a foot.
Factor checked against the defining standard · How we check
- Inches × 1.3715 × 10^-5
1 * 0.00001370 nmi
1 inch in every length unit
| Unit | Value | Exact factor |
|---|---|---|
| inches (as entered) | 1 in | — |
| feet | 0.08333333333 ft | × 0.0833333333333 |
| yards | 0.02777777778 yd | × 0.0277777777778 |
| miles | 0.00001578282828 mi | × 0.0000157828282828 |
| millimeters | 25.4 mm | × 25.4 |
| decimetres | 0.254 dm | × 0.254 |
| centimeters | 2.54 cm | × 2.54 |
| meters | 0.0254 m | × 0.0254 |
| kilometers | 0.0000254 km | × 0.0000254 |
| nautical miles | 0.00001371490281 nmi | × 0.0000137149028078 |
| micrometers | 25,400 µm | × 25,400 |
| nanometers | 25,400,000 nm | × 25,400,000 |
| thou | 1,000 thou | × 1,000 |
Factors are entered by hand from NIST rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert inches to nautical miles? The converter and the working
- 1.Take the measurement in inches.
- 2.Multiply by 1.3715 × 10^-5 — that is how many nautical miles fit in one inch.
- 3.To go back the other way, divide by 1.3715 × 10^-5, or multiply by 72913.386.
Worked example: 25 inches to nautical miles
- Formula
- in × 1.3715 × 10^-5 = nmi
- Arithmetic
- 25 × 1.3715 × 10^-5 = 0.0003429 nmi
- Answer
- 25 in = 0.0003429 nmi
The factor is rounded for display; the figure above is computed from the full value.
Inches to nautical miles conversion table
| Inches | Nautical miles |
|---|---|
| 1 in | 0.00001371 nmi |
| 2 in | 0.00002743 nmi |
| 3 in | 0.00004114 nmi |
| 4 in | 0.00005486 nmi |
| 5 in | 0.00006857 nmi |
| 6 in | 0.00008229 nmi |
| 7 in | 0.000096 nmi |
| 8 in | 0.0001097 nmi |
| 9 in | 0.0001234 nmi |
| 10 in | 0.0001371 nmi |
| 12 in | 0.0001646 nmi |
| 15 in | 0.0002057 nmi |
| 20 in | 0.0002743 nmi |
| 25 in | 0.0003429 nmi |
| 50 in | 0.0006857 nmi |
| 100 in | 0.001371 nmi |
| 200 in | 0.002743 nmi |
| 300 in | 0.004114 nmi |
| 500 in | 0.01 nmi |
| 1000 in | 0.01 nmi |
| 2000 in | 0.03 nmi |
| 5000 in | 0.07 nmi |
| 10000 in | 0.14 nmi |
What is an inch?
Exactly 25.4 millimeters since the 1959 international yard and pound agreement, and one twelfth of a foot.
What is a nautical mile?
Exactly 1,852 meters by international agreement since 1929, chosen because it is one minute of latitude — which is why a chart, a speed in knots and a position in degrees all use the same arithmetic.
How many nautical miles are in an inch?
One inch is 1.3715 × 10^-5 nautical miles. Going the other way, one nautical mile is 72913.386 inches. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every length unit here
The whole group — 13 units with their symbols and the size of each one in meters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to an inch.
Source: NIST — international yard and pound agreement (inch = 25.4 mm exactly)
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Questions people actually ask
- How many nautical miles are in an inch?
- 1.3715 × 10^-5. Exactly 1,852 meters by international agreement since 1929, chosen because it is one minute of latitude — which is why a chart, a speed in knots and a position in degrees all use the same arithmetic.
- How do I convert nautical miles back to inches?
- Divide by 1.3715 × 10^-5, or multiply by 72913.386 — they are the same operation.
Other length conversions
Nautical miles to inches — the same conversion the other way.