Ell to Cable Length Conversion Calculator: Free Online Tool

Convert ells to cable lengths with our free online length converter.

Ell to Cable Length Calculator

Ell
Cable Length

How to Use the Calculator:

  1. Enter the value you want to convert in the 'From' field (Ell).
  2. The converted value in Cable Length will appear automatically in the 'To' field.
  3. Use the dropdown menus to select different units within the Length category.
  4. Click the swap button (⇌) to reverse the conversion direction.

How to Convert Ell to Cable Length

Converting Ell to Cable Length involves multiplying the value by a specific conversion factor, as shown in the formula below.

Formula:

1 Ell = 0.00617171 cable lengths

Example Calculation:

Convert 10 ells: 10 × 0.00617171 = 0.0617171 cable lengths

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 Ell and a Cable Length?

The Ell is an historical unit of length, primarily used for measuring cloth and textiles. Its exact length varied considerably depending on the region, country, and time period, making it a non-standardized unit overall, though often legally defined within specific jurisdictions.

It is generally understood to have originated from the length of the arm or forearm, similar to the cubit. The name itself derives from the Proto-Germanic word *alinō, meaning "forearm".

Common historical values demonstrate this variability:

  • English Ell: Traditionally 45 inches (1.25 yards, exactly 1.143 meters). This was the most common ell in England, particularly for measuring imported Flemish cloth.
  • Scottish Ell: Approximately 37.06 inches (about 0.941 meters), based on the standard Scottish inch.
  • Flemish (or Brabant) Ell: Approximately 27 inches (about 0.686 meters). Widely used in the Low Countries, a major center for textile production.
  • French Ell (Aune): Varied, but often around 46.77 inches (about 1.188 meters) in Paris. The aune itself had different lengths in different French regions.
  • Polish Ell (Łokieć): Approximately 22.7 inches (about 0.576 meters).
  • Swedish Ell (Aln): Approximately 23.3 inches (about 0.593 meters).

A Cable Length (symbol cb), often shortened to cable, is a nautical unit of length, traditionally related to the length of a ship's anchor cable. While its exact length has varied historically and geographically, it is now most commonly defined internationally as one-tenth of a nautical mile (1/10 NM).

This standard definition equates to:

  • 185.2 meters (m)
  • Approximately 607.61 feet (ft)
  • Approximately 202.54 yards (yd)

Other historical definitions based on the fathom also exist.

Note: The Ell is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Cable Length belongs to the imperial/US customary system.

History of the Ell and Cable Length

The ell was a fundamental unit for the textile trade across Europe, flourishing from the medieval period through the early modern era and into the 19th century. Its origins likely lie in anthropomorphic measurements related to the arm, similar to the cubit.

The lack of a universal standard led to numerous regional variations. Different cities, guilds, or nations established their own "standard" ell, often physically represented by a metal rod kept by authorities. This variation could sometimes be a source of trade disputes but also reflected local manufacturing and trade practices.

The English ell of 45 inches (longer than the standard English yard of 36 inches) became particularly well-established, possibly to account for shrinkage or to provide a customary "bonus" measure when selling cloth.

With the rise of standardized measurement systems like the Imperial system (promoting the yard) and especially the Metric system (introducing the meter), the ell gradually became obsolete during the 18th and 19th centuries. Legal reforms in many countries formally abolished it in favor of metric units.

The unit originated from the practical length of a ship's anchor cable (or "shot" of chain) used in the age of sail. Anchor cables were typically manufactured in standard lengths that could be shackled together. This length provided a convenient unit for measuring distances related to anchoring and maneuvering close to shore or other vessels.

However, the length was not universally standardized:

  • In the British Royal Navy, a cable was traditionally defined as 100 fathoms (equivalent to 600 feet or 182.88 meters).
  • In the U.S. Navy, it was often defined as 120 fathoms (equivalent to 720 feet or 219.456 meters).

With the international adoption of the nautical mile (defined as 1852 meters), defining the cable as exactly one-tenth of this value (185.2 m) created a convenient, decimal-based relationship and became the most common modern standard, sometimes referred to as the "international cable length".

Common Uses for ells and cable lengths

Explore the typical applications for both Ell (imperial/US) and Cable Length (imperial/US) to understand their common contexts.

Common Uses for ells

The ell is now obsolete but was historically crucial for:

  • Textile Trade: Its primary and defining use was measuring and selling lengths of cloth (wool, linen, silk, etc.). Cloth was often priced and sold "by the ell".
  • Tailoring and Dressmaking: Used by artisans creating garments.
  • Mercantile Records: Appears frequently in historical merchant accounts, inventories, customs documents, and trade records. Understanding the local ell is vital for interpreting these economic historical sources.
  • Land Measurement (Rarely): In some specific, localized contexts, an ell might have been used for land, but this was uncommon compared to units like the rod or chain.
  • Literature and Culture: Referenced in historical texts, literature, and idioms (e.g., "Give him an inch, and he'll take an ell").

Common Uses for cable lengths

The cable length, particularly the 1/10 NM definition, remains in use in specific maritime contexts:

  • Nautical Navigation & Ship Handling: Measuring short distances at sea, such as the distance between ships in formation, distance off a navigational hazard, distance to a pier, estimating anchor drag, or describing the scope (length) of anchor cable paid out.
  • Hydrographic Surveying: Historically used on nautical charts, although meters are now the primary international standard for depth and short distances on modern charts.
  • Naval Terminology: Persists in naval traditions and communications for describing close ranges.
  • Historical Context: Encountered in older maritime texts, logs, charts, and naval records.

Frequently Asked Questions

Questions About Ell (ell)

How long is an Ell?

There is no single fixed length for the ell; it varied significantly by location and time. Some key examples include:

  • English Ell: 45 inches (1.143 m)
  • Scottish Ell: ~37 inches (~0.94 m)
  • Flemish Ell: ~27 inches (~0.69 m)
  • French Aune (Ell): ~47 inches (~1.19 m) Always check the context (region and era) when encountering a measurement in ells. The English ell of 45 inches is often assumed in English-language historical contexts unless otherwise specified.

How does the Ell compare to a Yard?

The English ell (45 inches) is exactly 1.25 times longer than the standard yard (36 inches). However, other ells could be shorter (like the Flemish ell) or have different relationships to the local yard equivalent.

Is the Ell related to the Elbow or Arm?

Yes, the name "ell" derives from Proto-Germanic *alinō ("forearm"), cognate with Latin ulna and Greek ōlénē, all referring to the forearm or elbow. This strongly suggests an origin based on the length of the human arm, similar to the cubit. However, the standardized lengths adopted for trade were often considerably longer than a literal forearm.

Why did the Ell length vary so much?

The variation stemmed from:

  • Lack of Universal Standards: Before the metric system, measurement standards were highly localized.
  • Regional Customs: Different areas developed their own traditional lengths based on local needs and practices.
  • Trade Protectionism: Sometimes, variations were maintained deliberately by guilds or cities.
  • Evolution Over Time: The definition could change even within the same region over centuries.

Is the Ell an SI unit?

No, the ell is not part of the International System of Units (SI). It is an historical, customary unit belonging to various pre-metric systems. The corresponding SI unit for length is the meter (m).

Is the Ell still used today?

No, the ell is obsolete and is not used for any standard commercial, scientific, or practical measurements today. Its use was superseded primarily by the yard (in Imperial/US customary systems) and the meter (in the metric system). Its relevance is now purely historical.

About Cable Length (cb)

What are the different values for a cable length?

The value depends on the definition being used:

  • International Standard: 1 cable = 1/10 nautical mile = 185.2 meters ≈ 607.61 feet. (Most common modern definition)
  • British Traditional: 1 cable = 100 fathoms = 182.88 meters = 600 feet.
  • US Traditional: 1 cable = 120 fathoms = 219.456 meters = 720 feet.

Always clarify which definition is intended if precision is critical, though the 1/10 NM version is generally assumed today unless otherwise specified.

How many meters are in a standard cable length?

The internationally recognized standard cable length is exactly 185.2 meters.

How many feet are in a standard cable length?

The internationally recognized standard cable length is approximately 607.61 feet. The traditional British cable was 600 ft, and the traditional US cable was 720 ft.

Is the cable length related to the nautical mile?

Yes, the most common modern definition establishes a direct relationship: 1 cable length = 1/10 nautical mile.

Is the cable length an SI unit?

No, the cable length is not an SI unit. It is a traditional nautical unit derived from maritime practice and later linked to the nautical mile. The corresponding SI unit for length is the meter (m).

Is the cable length still used today?

Yes, while meters and nautical miles are standard for most navigation, the cable length (especially the 1/10 NM definition) is still actively used in specific maritime applications like anchoring, close maneuvering, naval operations, and sometimes in recreational boating contexts. It serves as a convenient subdivision of the nautical mile.

Conversion Table: Ell to Cable Length

Ell (ell)Cable Length (cb)
10.006
50.031
100.062
250.154
500.309
1000.617
5003.086
1,0006.172

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