📐 Fathoms to Chains Converter

5.0 out of 5 (4 ratings)

Enter details

25 fathoms =
2.27273 chains
1 fathom =
0.0909091 chains
1 chain =
11 fathoms
Formula
ch = ftm × 0.0909091
Handy values
5 ftm = 0.454545 ch · 10 ftm = 0.909091 ch · 100 ftm = 9.09091 ch

Rate this calculator

Was it useful? A quick star rating helps others — and you can leave a comment too.
Rate it: ★ ★ ★ ★ ★

⚡ Fathoms to Chains: the quick answer

1 ftm = 0.0909091 ch 1 fathom equals 0.0909091 chains

To convert fathoms to chains, multiply the value by 0.0909091. To go the other way, multiply chains by 11 to get fathoms.

↔ Convert chains to fathoms instead

🧮 Formula

Fathoms to Chains
ch = ftm × 0.0909091
Chains to Fathoms
ftm = ch × 11

Where

  • ftm = the length in fathoms
  • ch = the length in chains
Every unit here is defined by its length in meters, so the conversion factor is (meters per fathom) ÷ (meters per chain).

📊 Fathoms to Chains conversion table

Fathoms (ftm)Chains (ch)
1 ftm0.0909091 ch
2 ftm0.181818 ch
3 ftm0.272727 ch
4 ftm0.363636 ch
5 ftm0.454545 ch
6 ftm0.545455 ch
7 ftm0.636364 ch
8 ftm0.727273 ch
9 ftm0.818182 ch
10 ftm0.909091 ch
12 ftm1.09091 ch
14 ftm1.27273 ch
15 ftm1.36364 ch
20 ftm1.81818 ch
21 ftm1.90909 ch
24 ftm2.18182 ch
25 ftm2.27273 ch
30 ftm2.72727 ch
40 ftm3.63636 ch
50 ftm4.54545 ch
60 ftm5.45455 ch
75 ftm6.81818 ch
80 ftm7.27273 ch
100 ftm9.09091 ch
200 ftm18.1818 ch
250 ftm22.7273 ch
300 ftm27.2727 ch
400 ftm36.3636 ch
500 ftm45.4545 ch
750 ftm68.1818 ch
1,000 ftm90.9091 ch

📘 About these units

Fathom (ftm). A fathom is 6 feet (1.8288 m), traditionally used to measure the depth of water.

Chain (ch). A chain is 66 feet (20.1168 m), a surveying unit; 80 chains make one mile.

❓ Frequently asked questions

How many chains are in one fathom?

There are 0.0909091 chains in one fathom.

How do I convert fathoms to chains?

Multiply the number of fathoms by 0.0909091. For example, 10 fathoms equal 0.909091 chains.

How many fathoms are in one chain?

One chain equals 11 fathoms.

How many chains is 12 fathoms?

1.09091 chains. Other common values: 5 fathoms = 0.454545 chains and 100 fathoms = 9.09091 chains.

What people are saying
★★★★★
Anonymous · 10 Oct 2026
★★★★★
Anonymous · 02 Oct 2026
★★★★★
Anonymous · 01 Oct 2026
★★★★★
Anonymous · 28 Sep 2026