📐 Chains to Nautical Miles Converter

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250 chains =
2.71555 nautical miles
1 chain =
0.0108622 nautical miles
1 nautical mile =
92.0624 chains
Formula
NM = ch × 0.0108622
Handy values
5 ch = 0.054311 NM · 10 ch = 0.108622 NM · 100 ch = 1.08622 NM

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⚡ Chains to Nautical Miles: the quick answer

1 ch = 0.0108622 NM 1 chain equals 0.0108622 nautical miles

To convert chains to nautical miles, multiply the value by 0.0108622. To go the other way, multiply nautical miles by 92.0624 to get chains.

↔ Convert nautical miles to chains instead

🧮 Formula

Chains to Nautical Miles
NM = ch × 0.0108622
Nautical Miles to Chains
ch = NM × 92.0624

Where

  • ch = the length in chains
  • NM = the length in nautical miles
Every unit here is defined by its length in meters, so the conversion factor is (meters per chain) ÷ (meters per nautical mile).

📊 Chains to Nautical Miles conversion table

Chains (ch)Nautical Miles (NM)
1 ch0.0108622 NM
2 ch0.0217244 NM
3 ch0.0325866 NM
4 ch0.0434488 NM
5 ch0.054311 NM
6 ch0.0651732 NM
7 ch0.0760354 NM
8 ch0.0868976 NM
9 ch0.0977598 NM
10 ch0.108622 NM
12 ch0.130346 NM
14 ch0.152071 NM
15 ch0.162933 NM
20 ch0.217244 NM
21 ch0.228106 NM
24 ch0.260693 NM
25 ch0.271555 NM
30 ch0.325866 NM
40 ch0.434488 NM
50 ch0.54311 NM
60 ch0.651732 NM
75 ch0.814665 NM
80 ch0.868976 NM
100 ch1.08622 NM
200 ch2.17244 NM
250 ch2.71555 NM
300 ch3.25866 NM
400 ch4.34488 NM
500 ch5.4311 NM
750 ch8.14665 NM
1,000 ch10.8622 NM

✏️ Worked examples

Convert 25 chains to nautical miles

25 ch × 0.0108622 = 0.271555 NM

Try this example →

Convert 250 chains to nautical miles

250 ch × 0.0108622 = 2.71555 NM

Try this example →

📘 About these units

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

Nautical mile (NM). A nautical mile is exactly 1,852 meters, based on one minute of latitude, and is used in shipping and aviation.

❓ Frequently asked questions

How many nautical miles are in one chain?

There are 0.0108622 nautical miles in one chain.

How do I convert chains to nautical miles?

Multiply the number of chains by 0.0108622. For example, 10 chains equal 0.108622 nautical miles.

How many chains are in one nautical mile?

One nautical mile equals 92.0624 chains.

How many nautical miles is 12 chains?

0.130346 nautical miles. Other common values: 5 chains = 0.054311 nautical miles and 100 chains = 1.08622 nautical miles.

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