Convert Mile to Perch
Convert miles to perches instantly. 1 mile = 320 perch — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Perch to Mile converter for the reverse conversion.
Units explained
Mile
A mile (statute mile) is an Imperial and US customary unit of length equal to 5,280 feet or exactly 1,609.344 meters. It is the standard unit for road distances in the United States and the United Kingdom.
The mile derives from the Roman mille passus ("thousand paces" — about 1,480 meters). The English statute mile was fixed at 5,280 feet by the Weights and Measures Act of 1593, and exactly defined as 1,609.344 m by the 1959 International Yard and Pound Agreement.
Miles are used in the US and UK for road signs, speed limits (mph), athletic events (one-mile run), and geographic distances. Aviation also uses statute miles for some visibility measurements.
Roman origin (mille passus); English statute mile fixed at 5,280 feet in 1593; standardized to 1,609.344 m exactly by the 1959 International Yard and Pound Agreement.
Perch
A perch is an Imperial unit of length identical to the rod — 16.5 feet (about 5.03 m). The names 'rod', 'perch', and 'pole' all refer to the same surveying unit and differ only by regional preference.
Like the rod, the perch derives from medieval English land-surveying. The name 'perch' was particularly common in legal land descriptions in Ireland and parts of the UK.
Perches appear in legacy land descriptions in Ireland, the UK, and historical US documents. Modern usage is rare.
Medieval English surveying origin; identical to the rod since 1620; became exact via the 1959 International Yard and Pound Agreement.
Mile to Perch conversion formula
The relationship between miles and perches:
To convert miles to perches, multiply the value in miles by 320. To reverse, multiply perches by 0.003125.
How to use this converter
Type a value into the calculator. The result in perches updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Perch to Mile converter for the reverse direction.
Step-by-step: convert miles to perches
- Write down the value in miles (mi).
- Multiply that value by the factor 320.
- The product is the equivalent value in perches (perch).
- To reverse, multiply the perch value by 0.003125.
Worked examples
Example 1 — Convert 1 mi to perch:
1 × 320 = 320 perch
Example 2 — Convert 100 mi to perch:
100 × 320 = 32000 perch
Real-world example — Geographic to human-scale conversion
One mile converts to a precise number of perches — the everyday arithmetic for navigation systems, race-distance calculations, and any context where bigger geographic units must be related to the smaller working units.
1 mi × 320 = 320 perch
Real-world example — Lap pacing and route segmentation
Translating a mile-scale distance into perches is how runners, cyclists, and route planners convert top-line totals into the working segments they actually pace and execute.
1 mi × 320 = 320 perch
Real-world example — Track athletics distances
A 1-mile running track equals one thousand perches. Track athletes' lap pacing converts the lap (often 400 of the smaller unit) into the fractional race distance whenever a coach reviews splits.
1 mi × 320 = 320 perch
Mile to Perch conversion table
Standard reference values for converting miles to perches:
| Mile [mi] | Perch [perch] |
|---|---|
| 0.01 | 3.2 |
| 0.1 | 32 |
| 1 | 320 |
| 2 | 640 |
| 3 | 960 |
| 4 | 1280 |
| 5 | 1600 |
| 10 | 3200 |
| 20 | 6400 |
| 30 | 9600 |
| 40 | 12800 |
| 50 | 16000 |
| 100 | 32000 |
| 500 | 160000 |
| 1000 | 320000 |
Frequently asked questions
How many perches is 1 mile?
How do I convert miles to perches?
How do I convert perches back to miles?
How many perches is 100 miles?
Popular length unit conversions
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Metric / SI (18 units)
Imperial / US Customary (26 units)
Nautical (1 units)
Astronomical (9 units)
Atomic / Physics (6 units)
Typographic (3 units)
Sources & references
Conversion factor (1 mi = 320 perch) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.