Bolt to Roman Mile Conversion Calculator: Free Online Tool
Convert bolts to Roman miles with our free online length converter.
Bolt to Roman Mile Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Bolt).
- The converted value in Roman Mile will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Length category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Bolt to Roman Mile
Converting Bolt to Roman Mile involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Bolt = 0.0205946 Roman milesExample Calculation:
Convert 10 bolts: 10 × 0.0205946 = 0.205946 Roman miles
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
What is a Bolt and a Roman Mile?
A Bolt is a commercial unit of length primarily used for measuring rolls of cloth or fabric. Unlike standardized units like the meter or yard, the length of a bolt is not fixed and can vary significantly depending on the type of material, the manufacturer, the country of origin, and trade customs.
Common lengths often associated with a bolt include:
- 40 yards (approximately 36.58 meters) - Frequently cited, especially for cottons and silks in the US.
- 100 yards (approximately 91.44 meters) - Often used for heavier fabrics like canvas.
- Other lengths such as 30, 50, 60, or 120 yards may also be encountered.
The bolt represents a quantity convenient for wholesale trade, manufacturing, and inventory management rather than a precise scientific measurement.
The Roman Mile (mille passus, meaning "thousand paces"; symbol m.p.) was the standard Roman unit for measuring longer distances.
It was defined as 1,000 Roman paces (passus).
Since one passus (a double step) was equal to 5 Roman feet (pes), the Roman mile was equivalent to:
- 1,000 paces (passus)
- 5,000 Roman feet (pedes)
The exact length varied slightly depending on the precise definition of the Roman foot used, but it is typically estimated as:
- Approximately 1,480 meters (m)
- Approximately 1.48 kilometers (km)
- Approximately 0.919 statute miles (mi)
- Approximately 4,856 feet (ft) (using a common estimate for the Roman foot)
Note: The Bolt is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Roman Mile belongs to the imperial/US customary system.
History of the Bolt and Roman Mile
The concept of the bolt emerged from the practical needs of the textile industry. As cloth production scaled up, manufacturers and merchants needed a standardized way to handle, store, and trade large quantities of fabric. Winding cloth onto a roll or board (the "bolt") provided a convenient package.
The length associated with a bolt likely developed through trade customs specific to different types of fabric and regions. There was never a universal legal standard defining its length, leading to the wide variations seen historically and currently. While retail sales shifted towards measurement by the yard or meter, the bolt remained a useful unit in wholesale and industrial contexts. Even with the global adoption of the metric system, the term "bolt" persists in the textile trade as a reference to a full roll of fabric, though the exact length is usually specified separately in yards or meters.
The Roman mile was established during the Roman Republic and Empire and was used extensively throughout Roman territories for measuring roads, distances between cities, and military movements. Roman roads were famously marked with milestones (miliarium) indicating the distance in Roman miles, often back to the Milliarium Aureum (Golden Milestone) in the Forum Romanum.
The Roman mile significantly influenced the development of the mile unit in other countries, including the English statute mile, although the lengths eventually diverged.
Common Uses for bolts and Roman miles
Explore the typical applications for both Bolt (imperial/US) and Roman Mile (imperial/US) to understand their common contexts.
Common Uses for bolts
The bolt is almost exclusively used within the textile industry:
- Wholesale Trade: Fabric manufacturers sell cloth to distributors or large buyers in bolts.
- Manufacturing: Clothing and upholstery manufacturers purchase fabric by the bolt for production runs.
- Inventory Management: Textile mills, warehouses, and large retailers manage stock using bolts as units.
- Industrial Fabrics: Suppliers of canvas, vinyl, and other industrial textiles often sell material by the bolt.
It is generally not used for retail sales to consumers, where fabric is typically measured and cut to specific lengths (yards or meters) from the bolt.
Common Uses for Roman miles
- Historical Measurement: Used ubiquitously in the Roman Empire for all land distances.
- Historical Texts: Essential for understanding distances mentioned in Roman literature, historical accounts, and geographical works.
- Archaeology: Used to interpret Roman road networks, milestone placements, and site layouts.
Frequently Asked Questions
Questions About Bolt (bolt)
How long is a bolt of cloth?
There is no single standard length. It depends heavily on the fabric type and manufacturer. Common lengths include:
- 40 yards (~36.58 m)
- 100 yards (~91.44 m)
- Other lengths like 30, 50, 60, or 120 yards are also possible. Always check the specific product information for the actual length of a particular bolt.
How many yards are in a bolt?
Commonly 40 yards or 100 yards, but this is highly variable.
How many meters are in a bolt?
Based on common yard lengths:
- A 40-yard bolt is approximately 36.58 meters.
- A 100-yard bolt is approximately 91.44 meters.
Is the bolt a standardized unit?
No, it is not a standardized unit of length like the yard or meter. It's a commercial trade unit whose length varies.
Is the bolt still used today?
Yes, the term "bolt" is still widely used in the wholesale textile industry and manufacturing contexts to refer to a full roll of fabric, although the precise length is usually specified in yards or meters.
Is this related to the fastener "bolt"?
No, the bolt unit for cloth is completely unrelated to the metal fastener known as a bolt. They share the same name but have entirely different meanings and origins.
About Roman Mile (m.p.)
How long was a Roman Mile compared to a modern mile?
A Roman mile (approx. 1480 m) was shorter than the modern international statute mile (1609.344 m). A Roman mile is about 92% the length of a modern statute mile.
What does 'mille passus' mean?
It's Latin for "a thousand paces". Mille means thousand, and passus refers to the Roman pace (a double step of 5 Roman feet).
How many feet were in a Roman Mile?
There were 5,000 Roman feet (pedes) in one Roman mile.
Is the Roman Mile still used?
No, the Roman mile is obsolete and not used for any modern measurements. It is purely a historical unit. Modern distances are measured in kilometers or statute miles.
Conversion Table: Bolt to Roman Mile
| Bolt (bolt) | Roman Mile (m.p.) |
|---|---|
| 1 | 0.021 |
| 5 | 0.103 |
| 10 | 0.206 |
| 25 | 0.515 |
| 50 | 1.03 |
| 100 | 2.06 |
| 500 | 10.297 |
| 1,000 | 20.595 |
All Length Conversions
Other Units from Length
- Meter (m)
- Kilometer (km)
- Hectometer (hm)
- Decimeter (dm)
- Centimeter (cm)
- Millimeter (mm)
- Inch (in)
- Foot (ft)
- Yard (yd)
- Mile (mi)
- Nautical Mile (NM)
- Micrometer (μm)
- Nanometer (nm)
- Light Year (ly)
- Astronomical Unit (AU)
- Parsec (pc)
- Angstrom (Å)
- Point (Typography) (pt)
- Mil/Thou (mil)
- Fathom (fath)
- Furlong (fur)
- Link (Gunter's) (li)
- Pace (pace)
- Span (span)
- Digit (digit)
- Cable Length (cb)
- Ell (ell)
- Finger (finger)
- Stadion (stadion)
- Chi (Chinese) (chi)
- Shaku (Japanese) (shaku)
- Li (Chinese) (li)
- Toise (toise)
- Rope (rope)
- Smoot (smoot)
- Sajene (sajene)
- Ken (ken)
- Wa (wa)
- Vara (vara)
- Aln (aln)
- Cubit (Royal/Egyptian) (cubit)
- Versta (versta)
- Arpent (arpent)
- Ri (Japanese) (ri)
- Klafter (klafter)
- Yojana (yojana)
- Skein (skein)