Gigameter is 1000000000 meter units.
Gigameters to Chains Converter — Gm to ch
Convert Gigameter (Gm) to Chain (ch) using the exact conversion factor (1 gigameter = 49,709,695.38 chain). See the formula, worked examples, and conversion table.
Gigameters 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 1e+9 / 20.1168.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gigameters to Chains
Gigameter and Chain both measure length. Specifically: Gigameter is 1000000000 meter units, and a surveyor's chain is 66 feet.
Formula
chains = gigameters × 49709695.379
This factor comes from each unit's defined relationship to the category's base unit: 1 gigameter equals 1000000000 base units, and 1 chain equals 20.1168 base units, so dividing one by the other gives the direct gigameter-to-chain factor of 49709695.379.
Simple example
1 Gm × 49709695.38 = 49,709,695.38 ch
1 gigameter = 49,709,695.38 chains.
Real-world example
10 Gm × 49709695.38 = 497,096,953.8 ch
10 gigameters = 497,096,953.8 chains.
Conversion table
| Gigameter (Gm) | Chain (ch) |
|---|---|
| 1 Gm | 49,709,695.38 ch |
| 5 Gm | 248,548,476.9 ch |
| 10 Gm | 497,096,953.8 ch |
| 21.0975 Gm | 1,048,750,298 ch |
| 42.195 Gm | 2,097,500,597 ch |
| 100 Gm | 4,970,969,538 ch |
Reverse conversion: Chain to Gigameter
1 ch × 2.01168e-8 = 2.01168e-8 Gm
1 chain = 2.01168e-8 gigameters.
gigameters = chains × 2.01168e-8
For a page dedicated to this direction, see Chain to Gigameter.
Understanding the Gigameter (Gm)
Gigameter is 1000000000 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 gigameter?
1 gigameter equals 49,709,695.38 chains, using the exact defined conversion factor rather than an estimate.
How do I convert gigameter to chain?
Multiply the gigameter value by 49709695.38. The converter above does this instantly to whatever precision you set.
How do I convert chain back to gigameter?
Use the reverse factor: 1 chain equals 2.01168e-8 gigameters. You can also use the swap control in the converter above to flip the direction instantly.
What is a gigameter?
Gigameter (Gm) is a unit of length.
What is a chain?
Chain (ch) is a unit of length.
Is the gigameter to chain conversion exact?
Yes. Both gigameter and chain are defined by fixed standards rather than physical artifacts, so the factor of 49709695.38 used above is exact to as many digits as you choose to display.