A rod is 16.5 feet.
Rods to Nautical miles Converter — rd to nmi
Convert Rod (rd) to Nautical mile (nmi) using the exact conversion factor (1 rod = 0.0027155508 nautical mile). See the formula, worked examples, conversion table, history, and common uses.
Rods to Nautical miles converter
Converter
Length Converter
Convert SI, imperial, US customary, astronomical, scientific, and historical length units.
Context values
Some unit families need one extra value for a physically accurate result.
A nautical mile is exactly 1,852 meters.
Result = input x 5.0292 / 1852.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Rods to Nautical miles
Rod and Nautical mile both measure length. Specifically: A rod is 16.5 feet, and a nautical mile is exactly 1,852 meters.
Formula
nautical miles = rods × 0.00271555075594
This factor comes from each unit's defined relationship to the category's base unit: 1 rod equals 5.0292 base units, and 1 nautical mile equals 1852 base units, so dividing one by the other gives the direct rod-to-nautical mile factor of 0.00271555075594.
Simple example
1 rd × 0.002715550756 = 0.0027155508 nmi
1 rod = 0.0027155508 nautical miles.
Real-world example
10 rd × 0.002715550756 = 0.0271555076 nmi
10 rods = 0.0271555076 nautical miles.
Conversion table
| Rod (rd) | Nautical mile (nmi) |
|---|---|
| 1 rd | 0.0027155508 nmi |
| 5 rd | 0.0135777538 nmi |
| 10 rd | 0.0271555076 nmi |
| 21.0975 rd | 0.0572913321 nmi |
| 42.195 rd | 0.1145826641 nmi |
| 100 rd | 0.2715550756 nmi |
Reverse conversion: Nautical mile to Rod
0.0027155508 nmi × 368.2494234 = 1.000000016 rd
0.0027155508 nautical miles = 1.000000016 rods.
rods = nautical miles × 368.249423368
For a page dedicated to this direction, see Nautical mile to Rod.
Understanding the Rod (rd)
A rod is 16.5 feet.
Understanding the Nautical mile
Nautical mile (nmi) measures distance. The international nautical mile is defined as exactly 1,852 meters, standardized in 1929. It is classified as a Non-SI unit accepted for use with SI (maritime/aviation).
Where it's used: Used internationally in maritime navigation and aviation.
Uses of the Nautical mile today
- Marine and aviation distance and navigation
- Basis for the knot (nautical miles per hour)
History of the Nautical mile
The nautical mile was historically defined as one minute of latitude along a meridian, directly tying sea navigation to the Earth's geometry, which made it practical for chart-based navigation using a ship's known latitude. The International Hydrographic Bureau standardized it at exactly 1,852 meters in 1929, a value close to the traditional latitude-based definitions used by different countries.
Historical origin. Nautical mile was not the invention of a single named person; it developed through the process described above.
Nautical mile — sources
- BIPM SI Brochure — Non-SI units accepted for use with SI — Lists the nautical mile among accepted non-SI units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many nautical miles are in 1 rod?
1 rod equals 0.0027155508 nautical miles, using the exact defined conversion factor rather than an estimate.
How do I convert rod to nautical mile?
Multiply the rod value by 0.002715550756. The converter above does this instantly to whatever precision you set.
How do I convert nautical mile back to rod?
Use the reverse factor: 1 nautical mile equals 368.2494234 rods. You can also use the swap control in the converter above to flip the direction instantly.
What is a rod?
Rod (rd) is a unit of length.
What is a nautical mile?
Nautical mile (nmi) measures distance. The international nautical mile is defined as exactly 1,852 meters, standardized in 1929. It is classified as a Non-SI unit accepted for use with SI (maritime/aviation).
Is the rod to nautical mile conversion exact?
Yes. The international nautical mile is defined as exactly 1,852 meters, standardized in 1929. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.