Micrometer is 0.000001 meter units.
Micrometers to Chains Converter — um to ch
Convert Micrometer (um) to Chain (ch) using the exact conversion factor (1 micrometer = 4.97097e-8 chain). See the formula, worked examples, and conversion table.
Micrometers 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-6 / 20.1168.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Micrometers to Chains
Micrometer and Chain both measure length. Specifically: Micrometer is 0.000001 meter units, and a surveyor's chain is 66 feet.
Formula
chains = micrometers × 4.97097e-8
This factor comes from each unit's defined relationship to the category's base unit: 1 micrometer equals 0.000001 base units, and 1 chain equals 20.1168 base units, so dividing one by the other gives the direct micrometer-to-chain factor of 4.97097e-8.
Simple example
1 um × 4.97097e-8 = 4.97097e-8 ch
1 micrometer = 4.97097e-8 chains.
Real-world example
10 um × 4.97097e-8 = 4.97097e-7 ch
10 micrometers = 4.97097e-7 chains.
Conversion table
| Micrometer (um) | Chain (ch) |
|---|---|
| 1 um | 4.97097e-8 ch |
| 5 um | 2.485485e-7 ch |
| 10 um | 4.97097e-7 ch |
| 21.0975 um | 0.0000010488 ch |
| 42.195 um | 0.0000020975 ch |
| 100 um | 0.000004971 ch |
Reverse conversion: Chain to Micrometer
4.97097e-8 ch × 20116800 = 1.000000093 um
4.97097e-8 chains = 1.000000093 micrometers.
micrometers = chains × 20116800
For a page dedicated to this direction, see Chain to Micrometer.
Understanding the Micrometer (um)
Micrometer is 0.000001 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 micrometer?
1 micrometer equals 4.97097e-8 chains, using the exact defined conversion factor rather than an estimate.
How do I convert micrometer to chain?
Multiply the micrometer value by 4.97097e-8. The converter above does this instantly to whatever precision you set.
How do I convert chain back to micrometer?
Use the reverse factor: 1 chain equals 20,116,800 micrometers. You can also use the swap control in the converter above to flip the direction instantly.
What is a micrometer?
Micrometer (um) is a unit of length.
What is a chain?
Chain (ch) is a unit of length.
Is the micrometer to chain conversion exact?
Yes. Both micrometer and chain are defined by fixed standards rather than physical artifacts, so the factor of 4.97097e-8 used above is exact to as many digits as you choose to display.