# Chains to Angstroms (ch to A)

Source: https://www.unitconvertercalculator.com/length/chains-to-angstroms/

**1 ch = 201168000000 A**

One chain equals approximately 2.012 x 1011 angstroms, or about 201 billion angstroms. Gunter's chain (66 feet / 20.1168 m) was the backbone of English land surveying, while the angstrom measures atomic bonds. These units are separated by 11 orders of magnitude and have never intersected in practice.

## Formula

Convert Chains to Angstroms

## Conversion Table

| Chains (ch) | Angstroms (A) |
|---|---|
| 1.0E-11 ch | 2.01168 A |
| 1.0E-10 ch | 20.1168 A |
| 1.0E-9 ch | 201.168 A |
| 1.0E-8 ch | 2011.68 A |
| 1.0E-7 ch | 20116.8 A |
| 1.0E-6 ch | 201168 A |
| 1.0E-5 ch | 2011680 A |
| 0.0001 ch | 20116800 A |
| 0.001 ch | 201168000 A |
| 0.01 ch | 2011680000 A |
| 0.1 ch | 20116800000 A |

## Units

### Chain (ch)

Exactly 66 feet or 4 rods (20.1168 m). Invented by Edmund Gunter for land surveying. 80 chains make one mile. Still used in US public land surveys.

### Angstrom (A)

One ten-billionth of a meter (0.1 nanometers). Named after Anders Jonas Angstrom. Used in crystallography, spectroscopy, and atomic physics.

## Background

A surveyor's chain stretched end to end contains about 201 billion angstroms. A single silicon atom at 2.2 angstroms would need to be replicated roughly 91 billion times to span one chain. The chain measured English farmland; the angstrom measures crystal lattices. They belong to entirely different eras and fields of measurement.

## Good to Know

Edmund Gunter invented his chain around 1620 for practical land surveying. Anders Angstrom introduced his unit in 1868 for spectroscopy. These two innovations, separated by 248 years and vastly different fields, have never needed to communicate.

## FAQ

### How many angstroms are in 1 chain?

One chain (66 feet / 20.1168 meters) contains approximately 2.012 x 1011 angstroms (about 201 billion). Since 1 meter = 1010 angstroms, multiply 20.1168 by 1010.

### How do I convert chains to angstroms?

Multiply the number of chains by 2.012 x 1011. For example, 10 chains (one furlong) = 2.012 x 1012 angstroms.

### Is this conversion ever needed?

No. Chains are a historical land surveying unit. Angstroms measure atoms and molecules. No scientific or surveying application requires converting between them.

## Non-Frequently Asked Questions

### How many atoms are in an actual chain link?

A typical iron chain link contains roughly 1022 iron atoms. A surveyor's chain has 100 links. So a complete Gunter's chain contains about 1024 atoms - roughly the number of stars in the observable universe. Your chain is a universe of iron atoms.

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## See Also

- [Angstroms to Chains](https://www.unitconvertercalculator.com/length/angstroms-to-chains/)