A nautical mile is exactly 1,852 meters.
Nautical miles to Picas Converter — nmi to pc
Convert Nautical mile (nmi) to Pica (pc) using the exact conversion factor (1 nautical mile = 437,480.315 pica). See the formula, worked examples, conversion table, history, and common uses.
Nautical miles to Picas 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 pica is 12 points.
Result = input x 1852 / 0.004233333333.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Nautical miles to Picas
Nautical mile and Pica both measure length. Nautical mile is most often used for marine and aviation distance and navigation.
Formula
picas = nautical miles × 437480.314995
This factor comes from each unit's defined relationship to the category's base unit: 1 nautical mile equals 1852 base units, and 1 pica equals 0.004233333333 base units, so dividing one by the other gives the direct nautical mile-to-pica factor of 437480.314995.
Simple example
1 nmi × 437480.315 = 437,480.315 pc
1 nautical mile = 437,480.315 picas.
Real-world example
10 nmi × 437480.315 = 4,374,803.15 pc
10 nautical miles = 4,374,803.15 picas.
Conversion table
| Nautical mile (nmi) | Pica (pc) |
|---|---|
| 1 nmi | 437,480.315 pc |
| 5 nmi | 2,187,401.575 pc |
| 10 nmi | 4,374,803.15 pc |
| 21.0975 nmi | 9,229,740.946 pc |
| 42.195 nmi | 18,459,481.89 pc |
| 100 nmi | 43,748,031.5 pc |
Reverse conversion: Pica to Nautical mile
1 pc × 0.000002285817134 = 0.0000022858 nmi
1 pica = 0.0000022858 nautical miles.
nautical miles = picas × 0.00000228581713445
For a page dedicated to this direction, see Pica to Nautical mile.
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.
Understanding the Pica (pc)
A pica is 12 points.
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 picas are in 1 nautical mile?
1 nautical mile equals 437,480.315 picas, using the exact defined conversion factor rather than an estimate.
How do I convert nautical mile to pica?
Multiply the nautical mile value by 437480.315. The converter above does this instantly to whatever precision you set.
How do I convert pica back to nautical mile?
Use the reverse factor: 1 pica equals 0.0000022858 nautical miles. You can also use the swap control in the converter above to flip the direction instantly.
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).
What is a pica?
Pica (pc) is a unit of length.
Is the nautical mile to pica 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.
Where is the nautical mile still used today?
Used internationally in maritime navigation and aviation.