What is the difference between stone (US) and stone (UK)?

Stone (US) and stone (UK) are traditional units of mass both equal to 14 avoirdupois pounds, but they differ slightly in usage and exact conversion. Stone (US) is mostly historical and less common.

Why would I need to convert between stone (US) and stone (UK)?

Converting between these units is important for interpreting historical records, regional body weight reporting, agricultural data, and sports weight classifications where the unit origin may vary.

Is stone (UK) still used today?

Yes, stone (UK) remains informally used in the United Kingdom and Ireland, especially for expressing human body weight and in some sports or traditional settings.

How to Convert from Stone (US) to Stone (UK)?

Learn how to convert weight measurements from stone (US) to stone (UK), understanding their definitions, use cases, and the conversion rate between these traditional British units.

Stone (US)

Stone (UK)

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Stone (US) to Stone (UK) Conversion Table

Stone (US)	Stone (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.

Stone (US) to Stone (UK) Conversion Table
Stone (US)	Stone (UK)

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What Is This Tool?

This tool converts weight values from stone (US) to stone (UK), two closely related but regionally distinct units used primarily in the UK, Ireland, and historically in the US. It helps reconcile measurements where the unit origin may vary.

How to Use This Tool?

Enter the weight value in stone (US) into the input field
Select stone (US) as the original unit and stone (UK) as the target unit
Click the convert button to display the equivalent weight in stone (UK)
Review the converted value for applications in healthcare, historical data, or sports weights

Key Features

Converts weight values between stone (US) and stone (UK)
Based on the exact conversion rate: 1 Stone (US) equals 0.8928571429 Stone (UK)
Supports understanding of traditional units still used in personal, agricultural, and sports contexts
Browser-based and easy to use

Examples

Convert 5 Stone (US): 5 × 0.8928571429 = 4.4642857145 Stone (UK)
Convert 10 Stone (US): 10 × 0.8928571429 = 8.928571429 Stone (UK)

Common Use Cases

Informal reporting of human body weight in the UK and Ireland
Translating historical or agricultural weight records involving livestock or commodities
Supporting sports and public communications where weights are given in stones and pounds
Converting older imperial weights for medical or engineering documentation

Tips & Best Practices

Ensure you know the origin of the stone measurement before converting, due to subtle regional differences
Use this tool primarily for informal or legacy data, as scientific contexts prefer kilograms
Double-check converted values when precise weight data is critical
Remember that stone (US) is uncommon today and mostly used historically

Limitations

Stone (US) usage is rare and mostly historical within the United States
Differences between stone (US) and stone (UK) are small but can cause minor errors if unit origin is unclear
Both units are non-SI and less relevant in scientific or international weight measurements

Frequently Asked Questions

What is the difference between stone (US) and stone (UK)?: Stone (US) and stone (UK) are traditional units of mass both equal to 14 avoirdupois pounds, but they differ slightly in usage and exact conversion. Stone (US) is mostly historical and less common.
Why would I need to convert between stone (US) and stone (UK)?: Converting between these units is important for interpreting historical records, regional body weight reporting, agricultural data, and sports weight classifications where the unit origin may vary.
Is stone (UK) still used today?: Yes, stone (UK) remains informally used in the United Kingdom and Ireland, especially for expressing human body weight and in some sports or traditional settings.

Key Terminology

Stone (US): A traditional unit of mass equal to 14 pounds, historically used in the US but now uncommon.
Stone (UK): An imperial unit equal to 14 pounds, still informally used in the UK and Ireland for body weight.
Avoirdupois Pound: A unit of weight used in both US and UK customary systems, defining the stone as 14 pounds.

Quick Knowledge Check

What is the exact conversion rate from stone (US) to stone (UK)?

1 Stone (US) = 1.234 Stone (UK)

1 Stone (US) = 0.8928571429 Stone (UK)

1 Stone (US) = 1 Stone (UK)

In which countries is stone (UK) commonly used to report body weight?

United States and Canada

United Kingdom and Ireland

Australia and New Zealand

What is a common use for converting stone (US) to stone (UK)?

To interpret historical and agricultural weight records

To calculate scientific formulas

To measure liquids in cooking

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