Chains to Feet Converter

Surveying, land records, or historical documents — this tool converts chains to feet and feet to chains. Choose the chain type: the classic 66 ft Gunter’s chain or the 100 ft engineer’s chain.

Enter length in chains

feet = chains × chain length

Reverse: Feet → Chains

Enter feet to convert back

chains = feet ÷ chain length

Current chain length: 66 ft per chain

Make sure you pick the same chain standard your source uses.

Quick table (survey 66 ft)

Chains Feet (66 ft) Feet (100 ft) Notes
1661001 chain
213220066 ft × 2
5330500≈ 1 furlong (660 ft) = 10 chains
10660100010 chains = 1 furlong
805280800080 chains = 1 mile (survey)

Chains in surveying

The surveying (Gunter’s) chain is defined as 66 feet. This is the value you will see in most land survey documents, older plats, and US public land surveys.

The engineer’s chain is a convenient 100 feet. Some construction or engineering specs may quote chains in this way; that’s why this converter lets you switch between 66 ft and 100 ft.

Formulas

feet = chains × chain_length

For surveyor’s chain: feet = chains × 66

For engineer’s chain: feet = chains × 100

chains = feet ÷ chain_length

Survey: chains = feet ÷ 66

Engineer’s: chains = feet ÷ 100

FAQ

1. How many chains in a mile?

With 66 ft chains: 1 mile = 5,280 ft → 5,280 ÷ 66 = 80 chains.

2. What is a furlong?

1 furlong = 10 chains = 660 ft (with the 66 ft chain).

3. Which value should I use?

If you are dealing with historical or cadastral records, pick 66 ft. If your spec explicitly says “100 ft chain”, pick 100 ft.