Mil/Thou to Roman Mile Conversion Calculator: Free Online Tool
Convert mils to Roman miles with our free online length converter.
Mil/Thou to Roman Mile Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Mil/Thou).
- 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 Mil/Thou to Roman Mile
Converting Mil/Thou to Roman Mile involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Mil/Thou = 1.7162e-8 Roman miles
Example Calculation:
Convert 10 mils: 10 × 1.7162e-8 = 1.7162e-7 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 Mil/Thou and a Roman Mile?
A mil (also known as a thou) is a unit of length equal to one thousandth of an inch (0.001 inches or 25.4 micrometers).
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 Mil/Thou 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 Mil/Thou and Roman Mile
The unit originates from precision engineering and manufacturing where small tolerances are critical.
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 mils and Roman miles
Explore the typical applications for both Mil/Thou (imperial/US) and Roman Mile (imperial/US) to understand their common contexts.
Common Uses for mils
- Measuring thickness of materials (e.g., paper, plastic film, coatings)
- Specifying manufacturing tolerances
- Electronics (e.g., PCB trace widths)
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 Mil/Thou (mil)
Is a mil the same as a millimeter?
No, a mil (0.001 inches) is much smaller than a millimeter (0.001 meters). 1 millimeter is approximately 39.37 mils.
Is 'mil' short for millimeter?
No, 'mil' is short for the Latin 'mille', meaning thousandth (of an inch). It is not an abbreviation for millimeter (mm).
What does 'thou' mean in this context?
'Thou' is another common name for a mil, also meaning one thousandth (of an inch). It is frequently used in engineering and machining.
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: Mil/Thou to Roman Mile
Mil/Thou (mil) | Roman Mile (m.p.) |
---|---|
1 | 0 |
5 | 0 |
10 | 0 |
25 | 0 |
50 | 0 |
100 | 0 |
500 | 0 |
1,000 | 0 |
All Length Conversions
Other Units from Length
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