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    Length Conversion

    13 Chain to Fathom

    Quick answer

    13 Chain (ch) equals

    143 ftm

    To convert 13 Chains to Fathoms, multiply by 11. Therefore, 13 Chain (ch) equals 143 Fathom (ftm).

    Formula: ftm = ch × 11. Calculation: 13 × 11 = 143 ftm.

    Convert Chain (ch) to Fathom (ftm) online with our free unit converter. In length, 1 ch = 11 ftm. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.

    Worked example: converting Chain to Fathom

    1. Step 1 — start with the formula. ftm = ch × 11
    2. Step 2 — substitute your figure. 13 ch × 11
    3. Step 3 — read the result. 13 ch = 143 ftm
    4. Step 4 — check it in reverse. ch = ftm × 0.0909090909 returns 13 ch, which matches the figure you started with.

    Length Converter

    31 units available

    Decimals:
    143

    13 ch = 143 ftm

    Formula:

    ftm = ch × 11

    With your value: 13 ch = 143 ftm

    How big is that?

    Everyday references on a logarithmic scale, all expressed in chain so you can sanity-check the result.

    London double-decker bus (1/24 your value)0.547 ch
    Olympic pool (1/5.2 your value)2.49 ch
    Football pitch (length) (1/2.5 your value)5.22 ch
    Your value13.0 ch
    Eiffel Tower (1.3× your value)16.4 ch
    Burj Khalifa (3.2× your value)41.2 ch

    Other Chain to Fathom conversions

    9 ch to ftm10 ch to ftm11 ch to ftm12 ch to ftm14 ch to ftm15 ch to ftm16 ch to ftmFull Chain to Fathom converter

    Chain to Fathom Conversion Table

    Chain (ch)Fathom (ftm)
    0.55.5
    111
    222
    555
    10110
    15165
    20220
    25275
    50550
    1001,100
    2502,750
    5005,500
    100011,000

    Fathom to Chain Conversion Table

    Fathom (ftm)Chain (ch)
    0.50.045455
    10.090909
    20.181818
    50.454545
    100.909091
    151.363636
    201.818182
    252.272727
    504.545455
    1009.090909
    25022.727273
    50045.454545
    100090.909091

    Where these values come from

    Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

    Chain (ch)

    Length

    Exact conversion

    Traceable to the metre, defined by fixing the speed of light in vacuum at 299 792 458 m/s. Imperial lengths derive from the 1959 international yard (0.9144 m exactly).

    Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

    Bureau International des Poids et Mesures · Reviewed 2026-07-01

    Fathom (ftm)

    Length

    Exact conversion

    Traceable to the metre, defined by fixing the speed of light in vacuum at 299 792 458 m/s. Imperial lengths derive from the 1959 international yard (0.9144 m exactly).

    Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

    Bureau International des Poids et Mesures · Reviewed 2026-07-01

    How to Convert Chain to Fathom

    To convert from Chain (ch) to Fathom (ftm), multiply the value by 11.

    Formula: ftm = ch × 11

    Reverse: ch = ftm × 0.0909090909

    Step-by-Step Example

    1. Start with your value in Chain. For example: 5 ch
    2. Multiply by the conversion factor: 5 x 11
    3. The result is: 55 ftm

    Chain and Fathom Relationship

    This calculation facilitates standardized conversion between recognized units of length. Since 1 Chain equals approximately 11 Fathoms, the Chain represents a larger unit interval than the Fathom. Understanding the relationship between Chain and Fathom is essential for accurate calculations in physics, engineering, commerce, and daily applications.

    About Chain

    Gunter's chain equals 66 feet (20.1168 m) and underpins the US Public Land Survey System: 10 square chains make one acre.

    Common uses of Chain: land surveying, cadastral records, cricket pitch length.

    About Fathom

    The fathom equals 6 feet (1.8288 m) and is the traditional unit for water depth on nautical charts.

    Fun Fact: The word comes from the Old English "fæðm", the span of a man's outstretched arms.

    Common uses of Fathom: sounding depth, nautical charts, diving.

    Frequently Asked Questions

    What is 13 Chain in Fathom?
    13 Chain equals 143 Fathom.
    How many Fathoms are in 1 Chain?
    There are exactly 11 Fathoms in 1 Chain. This means the conversion factor from Chain to Fathom is 11.
    What is the formula to convert Chain to Fathom?
    The formula to convert Chain to Fathom is: ftm = ch × 11. For example, to convert 10 Chains to Fathoms, you would multiply 10 by 11.
    What is a Chain?
    Gunter's chain equals 66 feet (20.1168 m) and underpins the US Public Land Survey System: 10 square chains make one acre.
    What is a Fathom?
    The fathom equals 6 feet (1.8288 m) and is the traditional unit for water depth on nautical charts.
    What are the common uses of Chain?
    The Chain is commonly used in land surveying, cadastral records, cricket pitch length.

    Related Length Conversions

    Meter → FathomKilometer → FathomCentimeter → FathomMillimeter → FathomMicrometer → FathomNanometer → FathomAngstrom → FathomMile → FathomYard → Fathom

    Cite this page

    UnitConvertLab. (2026). 13 Chain to Fathom. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/13-chain-to-fathom