Convert Caliber to Furlong
Convert calibers to furlongs instantly. 1 caliber = 1.262626e-6 furlong — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Furlong 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.
Furlong
A furlong is an Imperial unit of length equal to 660 feet, or exactly one eighth of a mile (about 201.17 m). It is the longest unit in the traditional English farm-and-survey system.
The furlong derives from Old English furh (furrow) + lang (long) — originally the length of a furrow in a typical medieval English open field. Standardised at 660 feet (= 10 chains = 220 yards = 1/8 mile) in medieval times.
Furlongs are the standard distance unit in horse racing (e.g., 'The race is 8 furlongs'), historical English farming and surveying, and occasional poetic or rhetorical usage. Modern racing courses worldwide list distances in furlongs.
Medieval English farming origin; standardised at 660 feet; remains the official distance unit in flat-racing thoroughbred horse races worldwide.
Caliber to Furlong conversion formula
The relationship between calibers and furlongs:
To convert calibers to furlongs, multiply the value in calibers by 1.262626e-6. To reverse, multiply furlongs by 792000.0000000001.
How to use this converter
Type a value into the calculator. The result in furlongs updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Furlong to Caliber converter for the reverse direction.
Step-by-step: convert calibers to furlongs
- Write down the value in calibers (cl).
- Multiply that value by the factor 1.262626e-6.
- The product is the equivalent value in furlongs (fur).
- To reverse, multiply the furlong value by 792000.0000000001.
Worked examples
Example 1 — Convert 1 cl to fur:
1 × 1.262626e-6 = 1.262626e-6 fur
Example 2 — Convert 100 cl to fur:
100 × 1.262626e-6 = 0.0001262626 fur
Real-world example — Plastic-film thickness alternates
A 150-caliber plastic film converts cleanly to furlongs — useful for packaging buyers reconciling supplier datasheets across metric and US measurement systems.
150 cl × 1.262626e-6 = 0.0001893939 fur
Real-world example — Hair-width scale measurements
A 70-caliber measurement (about the diameter of a human hair) is the kind of value materials engineers regularly express in adjacent micro-scale units like furlongs for direct comparison across supplier datasheets.
70 cl × 1.262626e-6 = 8.838384e-5 fur
Real-world example — Paper and film thicknesses
At the thickness of office paper (roughly 3 calibers), converting between sub-millimeter units is routine for packaging and printing buyers comparing quotes from metric and US suppliers.
3 cl × 1.262626e-6 = 3.787879e-6 fur
Caliber to Furlong conversion table
Standard reference values for converting calibers to furlongs:
| Caliber [cl] | Furlong [fur] |
|---|---|
| 0.01 | 1.262626e-8 |
| 0.1 | 1.262626e-7 |
| 1 | 1.262626e-6 |
| 2 | 2.525253e-6 |
| 3 | 3.787879e-6 |
| 4 | 5.050505e-6 |
| 5 | 6.313131e-6 |
| 10 | 1.262626e-5 |
| 20 | 2.525253e-5 |
| 30 | 3.787879e-5 |
| 40 | 5.050505e-5 |
| 50 | 6.313131e-5 |
| 100 | 0.0001262626 |
| 500 | 0.0006313131 |
| 1000 | 0.0012626263 |
Frequently asked questions
How many furlongs is 1 caliber?
How do I convert calibers to furlongs?
How do I convert furlongs back to calibers?
How many furlongs is 100 calibers?
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Metric / SI (4 units)
Imperial / US Customary (26 units)
Sources & references
Conversion factor (1 cl = 1.262626e-6 fur) 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 Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.