To convert Ramsden chains to millimeters, multiply the value by 30,480. To go the other way, multiply millimeters by 3.28084 × 10⁻⁵ to get Ramsden chains.
| Ramsden Chains (rch) | Millimeters (mm) |
|---|---|
| 1 rch | 30,480 mm |
| 2 rch | 60,960 mm |
| 5 rch | 152,400 mm |
| 10 rch | 304,800 mm |
| 20 rch | 609,600 mm |
| 50 rch | 1,524,000 mm |
| 100 rch | 3,048,000 mm |
| 500 rch | 15,240,000 mm |
| 1,000 rch | 30,480,000 mm |
Ramsden chain (rch). The Ramsden or engineer's chain is 100 feet (30.48 m), used in engineering surveys.
Millimeter (mm). A millimeter is one thousandth of a meter, used for small measurements such as thickness and rainfall.
There are 30,480 millimeters in one Ramsden chain.
Multiply the number of Ramsden chains by 30,480. For example, 10 Ramsden chains equal 304,800 millimeters.
One millimeter equals 3.28084 × 10⁻⁵ Ramsden chains.