Zettameter is 1e+21 meter units.
Zettameters to Chains Converter — Zm to ch
Convert Zettameter (Zm) to Chain (ch) using the exact conversion factor (1 zettameter = 4.97097e+19 chain). See the formula, worked examples, and conversion table.
Zettameters 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+21 / 20.1168.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Zettameters to Chains
Zettameter and Chain both measure length. Specifically: Zettameter is 1e+21 meter units, and a surveyor's chain is 66 feet.
Formula
chains = zettameters × 4.97097e+19
This factor comes from each unit's defined relationship to the category's base unit: 1 zettameter equals 1e+21 base units, and 1 chain equals 20.1168 base units, so dividing one by the other gives the direct zettameter-to-chain factor of 4.97097e+19.
Simple example
1 Zm × 4.97097e+19 = 4.97097e+19 ch
1 zettameter = 4.97097e+19 chains.
Real-world example
10 Zm × 4.97097e+19 = 4.97097e+20 ch
10 zettameters = 4.97097e+20 chains.
Conversion table
| Zettameter (Zm) | Chain (ch) |
|---|---|
| 1 Zm | 4.97097e+19 ch |
| 5 Zm | 2.485485e+20 ch |
| 10 Zm | 4.97097e+20 ch |
| 21.0975 Zm | 1.04875e+21 ch |
| 42.195 Zm | 2.097501e+21 ch |
| 100 Zm | 4.97097e+21 ch |
Reverse conversion: Chain to Zettameter
4.97097e+19 ch × 2.01168e-20 = 1.000000093 Zm
4.97097e+19 chains = 1.000000093 zettameters.
zettameters = chains × 2.01168e-20
For a page dedicated to this direction, see Chain to Zettameter.
Understanding the Zettameter (Zm)
Zettameter is 1e+21 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 zettameter?
1 zettameter equals 4.97097e+19 chains, using the exact defined conversion factor rather than an estimate.
How do I convert zettameter to chain?
Multiply the zettameter value by 4.97097e+19. The converter above does this instantly to whatever precision you set.
How do I convert chain back to zettameter?
Use the reverse factor: 1 chain equals 2.01168e-20 zettameters. You can also use the swap control in the converter above to flip the direction instantly.
What is a zettameter?
Zettameter (Zm) is a unit of length.
What is a chain?
Chain (ch) is a unit of length.
Is the zettameter to chain conversion exact?
Yes. Both zettameter and chain are defined by fixed standards rather than physical artifacts, so the factor of 4.97097e+19 used above is exact to as many digits as you choose to display.