To convert chains to US survey rods, multiply the value by 3.99999. To go the other way, multiply US survey rods by 0.250001 to get chains.
| Chains (ch) | US Survey Rods (rdUS) |
|---|---|
| 1 ch | 3.99999 rdUS |
| 2 ch | 7.99998 rdUS |
| 3 ch | 12 rdUS |
| 4 ch | 16 rdUS |
| 5 ch | 20 rdUS |
| 6 ch | 24 rdUS |
| 7 ch | 27.9999 rdUS |
| 8 ch | 31.9999 rdUS |
| 9 ch | 35.9999 rdUS |
| 10 ch | 39.9999 rdUS |
| 12 ch | 47.9999 rdUS |
| 14 ch | 55.9999 rdUS |
| 15 ch | 59.9999 rdUS |
| 20 ch | 79.9998 rdUS |
| 21 ch | 83.9998 rdUS |
| 24 ch | 95.9998 rdUS |
| 25 ch | 99.9998 rdUS |
| 30 ch | 120 rdUS |
| 40 ch | 160 rdUS |
| 50 ch | 200 rdUS |
| 60 ch | 240 rdUS |
| 75 ch | 299.999 rdUS |
| 80 ch | 319.999 rdUS |
| 100 ch | 399.999 rdUS |
| 200 ch | 799.998 rdUS |
| 250 ch | 999.998 rdUS |
| 300 ch | 1,200 rdUS |
| 400 ch | 1,600 rdUS |
| 500 ch | 2,000 rdUS |
| 750 ch | 2,999.99 rdUS |
| 1,000 ch | 3,999.99 rdUS |
Chain (ch). A chain is 66 feet (20.1168 m), a surveying unit; 80 chains make one mile.
US survey rod (rdUS). The US survey rod is 16.5 US survey feet, about 5.0292 m.
There are 3.99999 US survey rods in one chain.
Multiply the number of chains by 3.99999. For example, 10 chains equal 39.9999 US survey rods.
One US survey rod equals 0.250001 chains.
47.9999 US survey rods. Other common values: 5 chains = 20 US survey rods and 100 chains = 399.999 US survey rods.