Decameter is 10 meter units.
Decameters to Chains Converter — dam to ch
Convert Decameter (dam) to Chain (ch) using the exact conversion factor (1 decameter = 0.4970969538 chain). See the formula, worked examples, and conversion table.
Decameters to Chains converter
Converter
Length Converter
Convert SI, imperial, US customary, astronomical, scientific, and historical length units.
Context values
Some unit families need one extra value for a physically accurate result.
A surveyor's chain is 66 feet.
Result = input x 10 / 20.1168.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Decameters to Chains
Decameter and Chain both measure length. Specifically: Decameter is 10 meter units, and a surveyor's chain is 66 feet.
Formula
chains = decameters × 0.49709695379
This factor comes from each unit's defined relationship to the category's base unit: 1 decameter equals 10 base units, and 1 chain equals 20.1168 base units, so dividing one by the other gives the direct decameter-to-chain factor of 0.49709695379.
Simple example
1 dam × 0.4970969538 = 0.4970969538 ch
1 decameter = 0.4970969538 chains.
Real-world example
10 dam × 0.4970969538 = 4.970969538 ch
10 decameters = 4.970969538 chains.
Conversion table
| Decameter (dam) | Chain (ch) |
|---|---|
| 1 dam | 0.4970969538 ch |
| 5 dam | 2.485484769 ch |
| 10 dam | 4.970969538 ch |
| 21.0975 dam | 10.48750298 ch |
| 42.195 dam | 20.97500597 ch |
| 100 dam | 49.70969538 ch |
Reverse conversion: Chain to Decameter
0.4970969538 ch × 2.01168 = 1 dam
0.4970969538 chains = 1 decameters.
decameters = chains × 2.01168
For a page dedicated to this direction, see Chain to Decameter.
Understanding the Decameter (dam)
Decameter is 10 meter units.
Understanding the Chain (ch)
A surveyor's chain is 66 feet.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many chains are in 1 decameter?
1 decameter equals 0.4970969538 chains, using the exact defined conversion factor rather than an estimate.
How do I convert decameter to chain?
Multiply the decameter value by 0.4970969538. The converter above does this instantly to whatever precision you set.
How do I convert chain back to decameter?
Use the reverse factor: 1 chain equals 2.01168 decameters. You can also use the swap control in the converter above to flip the direction instantly.
What is a decameter?
Decameter (dam) is a unit of length.
What is a chain?
Chain (ch) is a unit of length.
Is the decameter to chain conversion exact?
Yes. Both decameter and chain are defined by fixed standards rather than physical artifacts, so the factor of 0.4970969538 used above is exact to as many digits as you choose to display.