Convert Pole to Mil
Convert poles to mils instantly. 1 pole = 198000 mil — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Mil to Pole converter for the reverse conversion.
Units explained
Pole
A pole is an Imperial unit of length identical to the rod and perch — 16.5 feet (about 5.03 m). The names are regional and historical variants for the same measurement.
The pole derives from medieval English land-surveying. The name comes from the physical wooden pole used by surveyors to lay out the unit on the ground.
Poles appear in historical land records, particularly older US public-land surveys. Functionally identical to rod and perch in all calculations.
Medieval English surveying origin; identical to the rod since 1620; became exact via the 1959 International Yard and Pound Agreement.
Mil
A mil (also called a thou) is an Imperial unit of length equal to one thousandth of an inch (1/1000 in = 0.0254 mm = 25.4 μm exactly). It is used in engineering, manufacturing, and materials specifications.
The mil is derived from the Latin mille, "thousand," denoting one-thousandth of an inch. Standardized in industrial use during the 19th-century rise of precision engineering.
Mils are used to specify thicknesses of plastic films, foils, paper, copper traces on printed circuit boards (PCBs), wire insulation, and paint coatings. A standard sheet of paper is about 4 mils thick.
Adopted in 19th-century engineering practice; the value (1/1000 in) became exact in 1959 when the inch was fixed at 25.4 mm via the International Yard and Pound Agreement. The British term is "thou"; American term is "mil".
Pole to Mil conversion formula
The relationship between poles and mils:
To convert poles to mils, multiply the value in poles by 198000. To reverse, multiply mils by 5.050505e-6.
How to use this converter
Type a value into the calculator. The result in mils updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Mil to Pole converter for the reverse direction.
Step-by-step: convert poles to mils
- Write down the value in poles (pole).
- Multiply that value by the factor 198000.
- The product is the equivalent value in mils (mil).
- To reverse, multiply the mil value by 5.050505e-6.
Worked examples
Example 1 — Convert 1 pole to mil:
1 × 198000 = 198000 mil
Example 2 — Convert 100 pole to mil:
100 × 198000 = 1.98e+7 mil
Real-world example — Macroscopic to microscopic
One pole equals a million mils. Optical engineers calculating coherence length compare macro-scale path lengths with micro-scale wavelength differences using exactly this conversion.
1 pole × 198000 = 198000 mil
Real-world example — Sub-meter precision
A 0.001-pole (1 mm) tolerance equals 1,000 mils — useful for surface-finish specs, where macro-scale dimensions are given in the larger unit but feature roughness in the smaller.
0.001 pole × 198000 = 198 mil
Real-world example — Macro-to-micro scale comparison
2 poles of measurement converts to a very large number in mils — useful in materials science when comparing bulk-sample dimensions to feature-level surface specs.
2 pole × 198000 = 396000 mil
Pole to Mil conversion table
Standard reference values for converting poles to mils:
| Pole [pole] | Mil [mil] |
|---|---|
| 0.01 | 1980 |
| 0.1 | 19800 |
| 1 | 198000 |
| 2 | 396000 |
| 3 | 594000 |
| 4 | 792000 |
| 5 | 990000 |
| 10 | 1980000 |
| 20 | 3960000 |
| 30 | 5940000 |
| 40 | 7920000 |
| 50 | 9900000 |
| 100 | 1.98e+7 |
| 500 | 9.9e+7 |
| 1000 | 1.98e+8 |
Frequently asked questions
How many mils is 1 pole?
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Popular length unit conversions
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Metric / SI (4 units)
Imperial / US Customary (26 units)
Sources & references
Conversion factor (1 pole = 198000 mil) 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.