A statute mile is exactly 1,609.344 meters.
Miles to Fathoms Converter — mi to ftm
Convert Mile (mi) to Fathom (ftm) using the exact conversion factor (1 mile = 880 fathom). See the formula, worked examples, conversion table, history, and common uses.
Miles to Fathoms 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 fathom is six feet.
Result = input x 1609.344 / 1.8288.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Miles to Fathoms
Mile and Fathom both measure length. Mile is most often used for road signage, speed limits, and odometers in the us and uk.
Formula
fathoms = miles × 880
This factor comes from each unit's defined relationship to the category's base unit: 1 mile equals 1609.344 base units, and 1 fathom equals 1.8288 base units, so dividing one by the other gives the direct mile-to-fathom factor of 880.
Simple example
1 mi × 880 = 880 ftm
1 mile = 880 fathoms.
Real-world example
10 mi × 880 = 8,800 ftm
10 miles = 8,800 fathoms.
Conversion table
| Mile (mi) | Fathom (ftm) |
|---|---|
| 1 mi | 880 ftm |
| 5 mi | 4,400 ftm |
| 10 mi | 8,800 ftm |
| 21.0975 mi | 18,565.8 ftm |
| 42.195 mi | 37,131.6 ftm |
| 100 mi | 88,000 ftm |
Reverse conversion: Fathom to Mile
880 ftm × 0.001136363636 = 1 mi
880 fathoms = 1 mile.
miles = fathoms × 0.00113636363636
For a page dedicated to this direction, see Fathom to Mile.
Understanding the Mile
Mile (mi) measures distance. The international statute mile is defined as exactly 1,609.344 meters (5,280 feet). It is classified as a US/imperial customary unit.
Where it's used: United States United Kingdom (road distances and speed limits)
Uses of the Mile today
- Road signage, speed limits, and odometers in the US and UK
- Everyday distance estimates in US/UK contexts
- Aviation and marine contexts use the related but distinct nautical mile instead
History of the Mile
The mile traces back to the Roman 'mille passus' ('a thousand paces'), about 1,000 double-steps of a marching legion, roughly 1,480 meters. The English statute mile diverged from this over the medieval period.
Elizabeth I's government fixed the English statute mile at 5,280 feet in 1593, replacing the old Roman-derived value so it would align evenly with the furlong (660 ft), a unit already standard in English land measurement.
The modern international mile (1,609.344 m exactly) was fixed by the same 1959 International Yard and Pound Agreement that standardized the pound, tying it to the internationally agreed yard of exactly 0.9144 meters.
Historical origin. Mile was not the invention of a single named person; it developed through the process described above.
Understanding the Fathom (ftm)
A fathom is six feet.
Mile — sources
- NIST — International yard and pound (1959) — Fixes the modern mile via the international yard.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many fathoms are in 1 mile?
1 mile equals 880 fathoms, using the exact defined conversion factor rather than an estimate.
How do I convert mile to fathom?
Multiply the mile value by 880. The converter above does this instantly to whatever precision you set.
How do I convert fathom back to mile?
Use the reverse factor: 1 fathom equals 0.0011363636 miles. You can also use the swap control in the converter above to flip the direction instantly.
What is a mile?
Mile (mi) measures distance. The international statute mile is defined as exactly 1,609.344 meters (5,280 feet). It is classified as a US/imperial customary unit.
What is a fathom?
Fathom (ftm) is a unit of length.
Is the mile to fathom conversion exact?
Yes. The international statute mile is defined as exactly 1,609.344 meters (5,280 feet). 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 mile still used today?
United States United Kingdom (road distances and speed limits)