What is the chain (US survey) unit?

The chain (US survey) is a traditional length unit equal to 66 US survey feet, historically used in U.S. land surveying and cadastral work.

What does the petameter measure?

The petameter is an SI unit representing 10^15 metres, suited for expressing extremely large distances such as astronomical scales.

Why convert chain to petameter?

Converting chain to petameter allows translating historical land survey data into scales appropriate for astronomical or astrophysical analysis.

Convert Chain (US survey) to Petameter - Online Length Converter

Easily convert lengths from chain (US survey) [ch], a historic land measurement, to petameter [Pm], an SI unit for extremely large distances. Use this tool for translating legacy surveying data into astronomical scales.

Chain (US survey) [ch]

Petameter [Pm]

Please check your input. It must be a valid numeric value.

Chain (US survey) [ch] to Petameter [Pm] Conversion Table

Chain (US survey) [ch]	Petameter [Pm]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Chain (US survey) [ch] to Petameter [Pm] Conversion Table
Chain (US survey) [ch]	Petameter [Pm]

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What Is This Tool?

This converter facilitates the transformation of length measurements from the US survey chain (ch), a traditional unit used mainly in land surveying, into petameters (Pm), a vast SI unit suited for astronomical distances. It bridges historical land data with modern scientific scales.

How to Use This Tool?

Enter the length value in chain (US survey) [ch]
Select petameter [Pm] as the target unit
Click the convert button to view the equivalent length in petameters
Review the output and use it for scientific or analytical purposes

Key Features

Converts chain (US survey) [ch] to petameter [Pm] with exact defined rates
Supports interpreting legacy land survey measurements for scientific use
Browser-based tool requiring no installation
Includes examples demonstrating conversion calculations
Ideal for integrating historical survey data into astronomical contexts

Examples

10 chain (US survey) equals 2.011684023368e-13 petameter
100 chain (US survey) equals 2.011684023368e-12 petameter

Common Use Cases

Interpreting and recording distances from historical U.S. land deeds and cadastral surveys
Converting old survey measurements into modern astronomical units for research
Describing linear distances in rural property boundaries for spatial data systems
Expressing distances between nearby stars or interstellar structures measured in petameters

Tips & Best Practices

Use this conversion when integrating historic land survey data with large-scale scientific datasets
Remember that values in petameters will be extremely small for typical land measurements
Apply this tool mainly for scientific or astronomical context conversions rather than everyday surveying
Verify unit selections carefully to ensure accurate transformation between vastly different scales

Limitations

The very small conversion factor results in petameter values close to zero for most lengths expressed in chains
Historic nature of the chain unit may introduce rounding or precision constraints
Conversion is largely theoretical and not practical for common land measurement or engineering tasks

Frequently Asked Questions

What is the chain (US survey) unit?: The chain (US survey) is a traditional length unit equal to 66 US survey feet, historically used in U.S. land surveying and cadastral work.
What does the petameter measure?: The petameter is an SI unit representing 10^15 metres, suited for expressing extremely large distances such as astronomical scales.
Why convert chain to petameter?: Converting chain to petameter allows translating historical land survey data into scales appropriate for astronomical or astrophysical analysis.

Key Terminology

Chain (US survey): A traditional unit of length equal to 66 US survey feet, historically used in land surveying in the United States.
Petameter (Pm): An SI unit of length equal to 10^15 metres, used to express very large distances such as those in astronomy.
US Survey Foot: A unit of length used in the US survey system, serving as the basis for defining the US survey chain.

Quick Knowledge Check

What length does one US survey chain approximately equal in metres?

66 metres

20.1168 metres

100 metres

What scale of distance is typically measured using petameters?

Small land plots

Extremely large astronomical distances

Everyday building dimensions

Why is converting chain (US survey) to petameter mostly theoretical?

Because petameter is smaller than a chain

Due to the very small conversion factor and historic unit precision limits

Because chain is not a length unit

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