A surveyor's chain is 66 feet.
Chains to Zeptometers Converter — ch to zm
Convert Chain (ch) to Zeptometer (zm) using the exact conversion factor (1 chain = 2.01168e+22 zeptometer). See the formula, worked examples, and conversion table.
Chains to Zeptometers 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.
Zeptometer is 1e-21 meter units.
Result = input x 20.1168 / 1e-21.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Chains to Zeptometers
Chain and Zeptometer both measure length. Specifically: A surveyor's chain is 66 feet, and zeptometer is 1e-21 meter units.
Formula
zeptometers = chains × 2.01168e+22
This factor comes from each unit's defined relationship to the category's base unit: 1 chain equals 20.1168 base units, and 1 zeptometer equals 1e-21 base units, so dividing one by the other gives the direct chain-to-zeptometer factor of 2.01168e+22.
Simple example
1 ch × 2.01168e+22 = 2.01168e+22 zm
1 chain = 2.01168e+22 zeptometers.
Real-world example
10 ch × 2.01168e+22 = 2.01168e+23 zm
10 chains = 2.01168e+23 zeptometers.
Conversion table
| Chain (ch) | Zeptometer (zm) |
|---|---|
| 1 ch | 2.01168e+22 zm |
| 5 ch | 1.00584e+23 zm |
| 10 ch | 2.01168e+23 zm |
| 21.0975 ch | 4.244142e+23 zm |
| 42.195 ch | 8.488284e+23 zm |
| 100 ch | 2.01168e+24 zm |
Reverse conversion: Zeptometer to Chain
2.01168e+22 zm × 4.97097e-23 = 1 ch
2.01168e+22 zeptometers = 1 chains.
chains = zeptometers × 4.97097e-23
For a page dedicated to this direction, see Zeptometer to Chain.
Understanding the Chain (ch)
A surveyor's chain is 66 feet.
Understanding the Zeptometer (zm)
Zeptometer is 1e-21 meter units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many zeptometers are in 1 chain?
1 chain equals 2.01168e+22 zeptometers, using the exact defined conversion factor rather than an estimate.
How do I convert chain to zeptometer?
Multiply the chain value by 2.01168e+22. The converter above does this instantly to whatever precision you set.
How do I convert zeptometer back to chain?
Use the reverse factor: 1 zeptometer equals 4.97097e-23 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 zeptometer?
Zeptometer (zm) is a unit of length.
Is the chain to zeptometer conversion exact?
Yes. Both chain and zeptometer are defined by fixed standards rather than physical artifacts, so the factor of 2.01168e+22 used above is exact to as many digits as you choose to display.