Convert Cable to Rope
Convert cables to ropes instantly. 1 cable = 30.3805774278 rope — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Rope to Cable converter for the reverse conversion.
Units explained
Cable
A cable is a nautical unit of length equal to one tenth of a nautical mile (exactly 185.2 m). It is used in maritime navigation for short-distance descriptions.
The cable derives from the historical length of a ship's anchor cable. Standardised at one tenth of an international nautical mile in 1929.
Cables are used in modern maritime navigation when describing short distances between vessels, anchoring depths, and harbor manoeuvres. Common in naval and yachting contexts.
Standardised at 1/10 nautical mile by the International Hydrographic Organization in 1929.
Rope
A rope is an Imperial unit of length equal to 20 feet (6.096 m). It was historically used in English customary measurement, particularly in masonry and some land contexts.
The rope derives from English customary practice and represents 20 feet. Less commonly used than the rod-perch-pole family.
Ropes appear in historical English construction and surveying records but are rare in modern practice. Some legacy specifications and contracts may still reference the unit.
Medieval English customary origin; standardised at 20 feet; became exact via the 1959 International Yard and Pound Agreement.
Cable to Rope conversion formula
The relationship between cables and ropes:
To convert cables to ropes, multiply the value in cables by 30.3805774278. To reverse, multiply ropes by 0.0329157667.
How to use this converter
Type a value into the calculator. The result in ropes updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Rope to Cable converter for the reverse direction.
Step-by-step: convert cables to ropes
- Write down the value in cables (cable).
- Multiply that value by the factor 30.3805774278.
- The product is the equivalent value in ropes (rope).
- To reverse, multiply the rope value by 0.0329157667.
Worked examples
Example 1 — Convert 1 cable to rope:
1 × 30.3805774278 = 30.3805774278 rope
Example 2 — Convert 100 cable to rope:
100 × 30.3805774278 = 3038.0577427822 rope
Cable to Rope conversion table
Standard reference values for converting cables to ropes:
| Cable [cable] | Rope [rope] |
|---|---|
| 0.01 | 0.3038057743 |
| 0.1 | 3.0380577428 |
| 1 | 30.3805774278 |
| 2 | 60.7611548556 |
| 3 | 91.1417322835 |
| 4 | 121.5223097113 |
| 5 | 151.9028871391 |
| 10 | 303.8057742782 |
| 20 | 607.6115485564 |
| 30 | 911.4173228346 |
| 40 | 1215.2230971129 |
| 50 | 1519.0288713911 |
| 100 | 3038.0577427822 |
| 500 | 15190.2887139108 |
| 1000 | 30380.5774278215 |
Frequently asked questions
How many ropes is 1 cable?
How do I convert cables to ropes?
How do I convert ropes back to cables?
How many ropes is 100 cables?
Popular length unit conversions
Convert Cable to other length units
Show all Cable conversions
Metric / SI (4 units)
Imperial / US Customary (26 units)
Sources & references
Conversion factor (1 cable = 30.3805774278 rope) 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.