A surveyor's chain is 66 feet.
Chains to Attometers Converter — ch to am
Convert Chain (ch) to Attometer (am) using the exact conversion factor (1 chain = 2.01168e+19 attometer). See the formula, worked examples, and conversion table.
Chains to Attometers 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.
Attometer is 1e-18 meter units.
Result = input x 20.1168 / 1e-18.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Chains to Attometers
Chain and Attometer both measure length. Specifically: A surveyor's chain is 66 feet, and attometer is 1e-18 meter units.
Formula
attometers = chains × 2.01168e+19
This factor comes from each unit's defined relationship to the category's base unit: 1 chain equals 20.1168 base units, and 1 attometer equals 1e-18 base units, so dividing one by the other gives the direct chain-to-attometer factor of 2.01168e+19.
Simple example
1 ch × 2.01168e+19 = 2.01168e+19 am
1 chain = 2.01168e+19 attometers.
Real-world example
10 ch × 2.01168e+19 = 2.01168e+20 am
10 chains = 2.01168e+20 attometers.
Conversion table
| Chain (ch) | Attometer (am) |
|---|---|
| 1 ch | 2.01168e+19 am |
| 5 ch | 1.00584e+20 am |
| 10 ch | 2.01168e+20 am |
| 21.0975 ch | 4.244142e+20 am |
| 42.195 ch | 8.488284e+20 am |
| 100 ch | 2.01168e+21 am |
Reverse conversion: Attometer to Chain
2.01168e+19 am × 4.97097e-20 = 1 ch
2.01168e+19 attometers = 1 chain.
chains = attometers × 4.97097e-20
For a page dedicated to this direction, see Attometer to Chain.
Understanding the Chain (ch)
A surveyor's chain is 66 feet.
Understanding the Attometer (am)
Attometer is 1e-18 meter units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many attometers are in 1 chain?
1 chain equals 2.01168e+19 attometers, using the exact defined conversion factor rather than an estimate.
How do I convert chain to attometer?
Multiply the chain value by 2.01168e+19. The converter above does this instantly to whatever precision you set.
How do I convert attometer back to chain?
Use the reverse factor: 1 attometer equals 4.97097e-20 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 attometer?
Attometer (am) is a unit of length.
Is the chain to attometer conversion exact?
Yes. Both chain and attometer are defined by fixed standards rather than physical artifacts, so the factor of 2.01168e+19 used above is exact to as many digits as you choose to display.