What is a carat used for?

A carat is a unit of mass primarily used to measure gemstones and pearls, defined exactly as 200 milligrams.

Where is the stone unit commonly used?

The stone (UK) is used mainly in the United Kingdom and Ireland to express human body weight and in some traditional markets.

Why convert carats to stones?

Converting carats to stones helps relate small gemstone weights to a larger, more familiar unit of weight common in the UK and Ireland.

How to Convert from Carat [car, ct] to Stone (UK)?

Convert gemstone and pearl weights measured in carats to the traditional British stone unit using our easy-to-use converter tool.

Carat [car, ct]

Stone (UK)

Carat [car, ct] to Stone (UK) Conversion Table

Carat [car, ct]	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.

Carat [car, ct] to Stone (UK) Conversion Table
Carat [car, ct]	Stone (UK)

Explore More Weight And Mass Units Converter

What Is This Tool?

This converter transforms weight values from carats, a small unit used mainly for gemstones and pearls, into the stone (UK), a larger imperial unit commonly used in the UK and Ireland to express body weight.

How to Use This Tool?

Enter the weight in carats (ct) into the input field.
Select the output unit as stone (UK).
Click the convert button to get the equivalent weight in stones.
Review the conversion result for your specific measurement needs.

Key Features

Converts carat (ct) values to stone (UK) measurements accurately using defined rates.
Ideal for jewelers, gemologists, healthcare, sports, and traditional market applications.
Provides quick cross-referencing between precise gemstone weights and familiar body weight units.
Browser-based tool that is simple and straightforward to use.

Examples

100 carats equals 0.00314946 stones (UK).
500 carats converts to 0.0157473 stones (UK).

Common Use Cases

Weighing and pricing diamonds and gemstones in jewelry trade.
Recording pearl masses on gemological certificates.
Comparing small gem weights to bodyweight units used in the UK and Ireland.
Sports and healthcare contexts where stones are used for weight expression.
Traditional agricultural markets still employing historic imperial units.

Tips & Best Practices

Use the tool for accurate conversions when dealing with small gemstone masses.
Apply conversions mainly for comparative or cross-referencing purposes.
Remember that stone measurements are more common in specific regions like the UK and Ireland.
Keep in mind the difference in scale between carats and stones for practical applications.

Limitations

Carats measure extremely small masses, so results in stones are very small fractional numbers.
Stone is a non-SI unit with limited use outside the British Isles.
Conversions are mainly theoretical or situational rather than for everyday large-scale weights.

Frequently Asked Questions

What is a carat used for?: A carat is a unit of mass primarily used to measure gemstones and pearls, defined exactly as 200 milligrams.
Where is the stone unit commonly used?: The stone (UK) is used mainly in the United Kingdom and Ireland to express human body weight and in some traditional markets.
Why convert carats to stones?: Converting carats to stones helps relate small gemstone weights to a larger, more familiar unit of weight common in the UK and Ireland.

Key Terminology

Carat (car, ct): A unit of mass used mainly for gemstones and pearls, defined as exactly 200 milligrams or 0.2 grams.
Stone (UK): An imperial unit of mass equal to 14 pounds, or exactly 6.35029318 kilograms, used mainly in the UK and Ireland.
Point: A subdivision of a carat, where 1 carat equals 100 points, with each point equal to 0.01 carat.

Quick Knowledge Check

What does one carat equal?

Exactly 200 milligrams

Exactly 0.2 grams

Both A and B

Where is the stone unit primarily used?

United States

United Kingdom and Ireland

Global standard

Carat to stone conversions are mostly useful for what purpose?

Large-scale industrial weight measurements

Comparing small gem weights to commonly used body weight units in the UK

Everyday grocery shopping