Convert Caliber to Pole
Convert calibers to poles instantly. 1 caliber = 5.050505e-5 pole — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Pole to Caliber converter for the reverse conversion.
Units explained
Caliber
In length-measurement context, a caliber is a unit equal to one hundredth of an inch (2.54×10⁻⁴ m). The same word also refers to a firearm's bore diameter; in that context the value depends on the specific cartridge.
The caliber as a length unit derives from the inch by hundredth subdivision. Standardised through the 1959 International Yard and Pound Agreement.
Calibers appear in ballistics literature (alongside the more common usage as bore diameter), historical small-arms specifications, and a few precision-engineering contexts. Often confused with the cartridge-naming caliber, which is a different concept.
Length-unit usage standardised through the 1959 International Yard and Pound Agreement; the bore-diameter usage long predates this.
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.
Caliber to Pole conversion formula
The relationship between calibers and poles:
To convert calibers to poles, multiply the value in calibers by 5.050505e-5. To reverse, multiply poles by 19800.
How to use this converter
Type a value into the calculator. The result in poles updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Pole to Caliber converter for the reverse direction.
Step-by-step: convert calibers to poles
- Write down the value in calibers (cl).
- Multiply that value by the factor 5.050505e-5.
- The product is the equivalent value in poles (pole).
- To reverse, multiply the pole value by 19800.
Worked examples
Example 1 — Convert 1 cl to pole:
1 × 5.050505e-5 = 5.050505e-5 pole
Example 2 — Convert 100 cl to pole:
100 × 5.050505e-5 = 0.0050505051 pole
Real-world example — Quarter-meter measurement reference
A 250,000-caliber length equals 0.25 poles — useful for comparing supply-chain spec sheets where some lengths are quoted in the smaller unit and some in the larger.
250000 cl × 5.050505e-5 = 12.6262626263 pole
Real-world example — From microscopic to macroscopic
A million calibers equals exactly one pole. This kind of conversion appears in microfluidics, where total channel length is given in poles but feature widths are in calibers.
1000000 cl × 5.050505e-5 = 50.5050505051 pole
Real-world example — Macro-scale buildup
A million calibers equals exactly one pole — the conversion that bridges microscale features and macroscale objects in microfluidic, biomedical, and semiconductor packaging design.
1000000 cl × 5.050505e-5 = 50.5050505051 pole
Caliber to Pole conversion table
Standard reference values for converting calibers to poles:
| Caliber [cl] | Pole [pole] |
|---|---|
| 0.01 | 5.050505e-7 |
| 0.1 | 5.050505e-6 |
| 1 | 5.050505e-5 |
| 2 | 0.0001010101 |
| 3 | 0.0001515152 |
| 4 | 0.0002020202 |
| 5 | 0.0002525253 |
| 10 | 0.0005050505 |
| 20 | 0.001010101 |
| 30 | 0.0015151515 |
| 40 | 0.002020202 |
| 50 | 0.0025252525 |
| 100 | 0.0050505051 |
| 500 | 0.0252525253 |
| 1000 | 0.0505050505 |
Frequently asked questions
How many poles is 1 caliber?
How do I convert calibers to poles?
How do I convert poles back to calibers?
How many poles is 100 calibers?
Popular length unit conversions
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Metric / SI (4 units)
Imperial / US Customary (26 units)
Sources & references
Conversion factor (1 cl = 5.050505e-5 pole) 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.