Convert Cable to Perch
Convert cables to perches instantly. 1 cable = 36.8249423368 perch — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Perch 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.
Perch
A perch is an Imperial unit of length identical to the rod — 16.5 feet (about 5.03 m). The names 'rod', 'perch', and 'pole' all refer to the same surveying unit and differ only by regional preference.
Like the rod, the perch derives from medieval English land-surveying. The name 'perch' was particularly common in legal land descriptions in Ireland and parts of the UK.
Perches appear in legacy land descriptions in Ireland, the UK, and historical US documents. Modern usage is rare.
Medieval English surveying origin; identical to the rod since 1620; became exact via the 1959 International Yard and Pound Agreement.
Cable to Perch conversion formula
The relationship between cables and perches:
To convert cables to perches, multiply the value in cables by 36.8249423368. To reverse, multiply perches by 0.0271555076.
How to use this converter
Type a value into the calculator. The result in perches updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Perch to Cable converter for the reverse direction.
Step-by-step: convert cables to perches
- Write down the value in cables (cable).
- Multiply that value by the factor 36.8249423368.
- The product is the equivalent value in perches (perch).
- To reverse, multiply the perch value by 0.0271555076.
Worked examples
Example 1 — Convert 1 cable to perch:
1 × 36.8249423368 = 36.8249423368 perch
Example 2 — Convert 100 cable to perch:
100 × 36.8249423368 = 3682.4942336753 perch
Cable to Perch conversion table
Standard reference values for converting cables to perches:
| Cable [cable] | Perch [perch] |
|---|---|
| 0.01 | 0.3682494234 |
| 0.1 | 3.6824942337 |
| 1 | 36.8249423368 |
| 2 | 73.6498846735 |
| 3 | 110.4748270103 |
| 4 | 147.299769347 |
| 5 | 184.1247116838 |
| 10 | 368.2494233675 |
| 20 | 736.4988467351 |
| 30 | 1104.7482701026 |
| 40 | 1472.9976934701 |
| 50 | 1841.2471168377 |
| 100 | 3682.4942336753 |
| 500 | 18412.4711683767 |
| 1000 | 36824.9423367534 |
Frequently asked questions
How many perches is 1 cable?
How do I convert cables to perches?
How do I convert perches back to cables?
How many perches is 100 cables?
Popular length unit conversions
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Metric / SI (4 units)
Imperial / US Customary (26 units)
Sources & references
Conversion factor (1 cable = 36.8249423368 perch) 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.