A surveyor's chain is 66 feet.
Chains to Petameters Converter — ch to Pm
Convert Chain (ch) to Petameter (Pm) using the exact conversion factor (1 chain = 2.01168e-14 petameter). See the formula, worked examples, and conversion table.
Chains to Petameters 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.
Petameter is 1000000000000000 meter units.
Result = input x 20.1168 / 1e+15.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Chains to Petameters
Chain and Petameter both measure length. Specifically: A surveyor's chain is 66 feet, and petameter is 1000000000000000 meter units.
Formula
petameters = chains × 2.01168e-14
This factor comes from each unit's defined relationship to the category's base unit: 1 chain equals 20.1168 base units, and 1 petameter equals 1e+15 base units, so dividing one by the other gives the direct chain-to-petameter factor of 2.01168e-14.
Simple example
1 ch × 2.01168e-14 = 2.01168e-14 Pm
1 chain = 2.01168e-14 petameters.
Real-world example
10 ch × 2.01168e-14 = 2.01168e-13 Pm
10 chains = 2.01168e-13 petameters.
Conversion table
| Chain (ch) | Petameter (Pm) |
|---|---|
| 1 ch | 2.01168e-14 Pm |
| 5 ch | 1.00584e-13 Pm |
| 10 ch | 2.01168e-13 Pm |
| 21.0975 ch | 4.244142e-13 Pm |
| 42.195 ch | 8.488284e-13 Pm |
| 100 ch | 2.01168e-12 Pm |
Reverse conversion: Petameter to Chain
2.01168e-14 Pm × 4.97097e+13 = 1 ch
2.01168e-14 petameters = 1 chains.
chains = petameters × 4.97097e+13
For a page dedicated to this direction, see Petameter to Chain.
Understanding the Chain (ch)
A surveyor's chain is 66 feet.
Understanding the Petameter (Pm)
Petameter is 1000000000000000 meter units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many petameters are in 1 chain?
1 chain equals 2.01168e-14 petameters, using the exact defined conversion factor rather than an estimate.
How do I convert chain to petameter?
Multiply the chain value by 2.01168e-14. The converter above does this instantly to whatever precision you set.
How do I convert petameter back to chain?
Use the reverse factor: 1 petameter equals 4.97097e+13 chains. You can also use the swap control in the converter above to flip the direction instantly.
What is a chain?
Chain (ch) is a unit of length.
What is a petameter?
Petameter (Pm) is a unit of length.
Is the chain to petameter conversion exact?
Yes. Both chain and petameter are defined by fixed standards rather than physical artifacts, so the factor of 2.01168e-14 used above is exact to as many digits as you choose to display.