What is a Ton (assay) (US)?

It is a historical mining mass unit used to define the standard sample mass for reporting precious-metal content, with exact mass varying by jurisdiction.

Why convert Ton (assay) to Ton (long)?

To translate mining and assay measurement into the imperial mass unit used historically in UK and maritime contexts, aiding comparisons and contracts.

Are the unit definitions consistent worldwide?

No, differences exist across regions and time periods, so specifying exact masses is important to avoid ambiguity.

How to Convert from Ton (assay) (US) [AT (US)] to Ton (long) [ton (UK)]?

Convert mass values between the US assay ton (AT) and the UK long ton with this easy-to-use online unit converter, ideal for mining data, precious-metal assays, historical shipping, and bulk commodity measurements.

Ton (assay) (US) [AT (US)]

Ton (long) [ton (UK)]

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

Ton (assay) (US) [AT (US)] to Ton (long) [ton (UK)] Conversion Table

Ton (assay) (US) [AT (US)]	Ton (long) [ton (UK)]

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.

Ton (assay) (US) [AT (US)] to Ton (long) [ton (UK)] Conversion Table
Ton (assay) (US) [AT (US)]	Ton (long) [ton (UK)]

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What Is This Tool?

This converter allows you to translate weights from the US assay ton, a specialized mining sample mass, into the UK long ton, an imperial mass unit used historically in maritime and bulk cargo contexts. It supports accurate historical, commercial, and scientific data conversions.

How to Use This Tool?

Enter the value in Ton (assay) (US) [AT (US)] you want to convert.
Select Ton (long) [ton (UK)] as the target unit.
Click convert to see the equivalent weight in the UK long ton.
Use the result for comparisons, reports, or data integration.

Key Features

Converts from the US assay ton (AT) to the UK long ton (Imperial ton).
Supports mining, assay reporting, historical shipping, and bulk commodity trade conversions.
Browser-based and easy to use without complex setup.
Helps integrate legacy and modern mass measurement data for analysis and reporting.

Examples

100 Ton (assay) (US) is equal to 0.0028706 Ton (long) [ton (UK)].
1,000 Ton (assay) (US) converts to 0.028706 Ton (long) [ton (UK)].

Common Use Cases

Reporting gold or silver concentrations on assay certificates as ounces per assay ton.
Contractual settlement calculations for ore shipments based on metal content per assay ton.
Converting historical assay data into modern units for resource estimation.
Recording and converting UK maritime ship displacement and bulk cargo weights.
Translating bulk commodity trade figures in older British records.
Converting legacy engineering, surveying, or legal documents to standardized units.

Tips & Best Practices

Always specify the exact assay ton mass in your data to avoid confusion.
Be mindful of the small conversion ratio and scale results appropriately.
Clarify unit definitions when working across different regions or historical periods.
Use this tool to support consistent reporting and comparison between US and UK mass measures.

Limitations

The assay ton's mass varies with jurisdiction and practice, requiring precise mass definitions for accuracy.
The very small conversion rate results in tiny long ton values for typical assay ton amounts, limiting direct practical use without scaling.
Differences in unit definitions over time and regions may introduce ambiguity if not explicitly clarified.

Frequently Asked Questions

What is a Ton (assay) (US)?: It is a historical mining mass unit used to define the standard sample mass for reporting precious-metal content, with exact mass varying by jurisdiction.
Why convert Ton (assay) to Ton (long)?: To translate mining and assay measurement into the imperial mass unit used historically in UK and maritime contexts, aiding comparisons and contracts.
Are the unit definitions consistent worldwide?: No, differences exist across regions and time periods, so specifying exact masses is important to avoid ambiguity.

Key Terminology

Ton (assay) (US) [AT (US)]: A historical mining unit defining the standard sample mass used for reporting precious-metal content; its exact value varies by jurisdiction.
Ton (long) [ton (UK)]: Also called the Imperial ton, an imperial mass unit equal to 2,240 avoirdupois pounds or exactly 1,016.0469088 kilograms, used historically in UK and maritime contexts.
Conversion Rate: The factor used to translate one unit into another; for these units, 1 Ton (assay) (US) equals 0.000028706 Ton (long) (UK).

Quick Knowledge Check

What does the US assay ton primarily measure?

General cargo weight

Standard sample mass for precious-metal content

Ship displacement

Which context commonly uses the UK long ton?

Mining assay reporting

Historical UK shipping and bulk cargo measurements

Modern metric mass system

Why is specifying exact masses important when converting assay tons?

Because the assay ton’s exact mass varies by jurisdiction and practice

Because conversion formulas are always exact

Because long tons are always larger

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