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Unit Guide

Carat Guide

Use this page to understand carat, compare it with nearby weight units, and open the conversion pages that are most useful next.

Unit Guide
Carat

The carat is usually written as ct. This guide explains the unit itself and points you to the conversions people check most often.

Symbol: ct System: Precision Cluster: Precision
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About Carat

Definition. The carat (ct) is a unit of mass used for gemstones and pearls, defined as exactly 200 milligrams.

Common Uses. Carats are used mainly in jewelry and gemstone trade, where weight is part of how stones are described, compared, and priced.

Where People Use Carat. Use this guide to see where carat fits, then open the conversion page that matches the number you need to check.

Conversion Factors.

  • 1 carat (ct) = 200 milligrams (mg)
  • 1 carat (ct) = 0.2 grams (g)
  • 5 carats (ct) = 1 gram (g)
  • 1 kilogram (kg) = 5000 carats (ct)
  • 1 ounce (oz) is about 141.7476 carats (ct)
  • 1 pound (lb) is about 2267.96 carats (ct)

Comparisons. A 1-carat diamond describes weight, not visible size alone, which is why carat is best understood as a specialized mass unit rather than a shape or dimension.

Note. Use the live converter on this page when you want a quick jewelry-weight comparison, then open a pair page if you need the full context for one conversion path.

Popular Carat Conversions

Start with these if you want the most common ways people convert to or from carat.

Carat To Kilogram Converter Carat To Gram Converter Carat To Milligram Converter Carat To Metric Ton Converter Carat To Long Ton Converter Carat To Short Ton Converter Carat To Pound Converter Carat To Ounce Converter Carat To Atomic Mass Unit Converter Kilogram To Carat Converter Gram To Carat Converter Milligram To Carat Converter Metric Ton To Carat Converter Long Ton To Carat Converter Short Ton To Carat Converter Pound To Carat Converter Ounce To Carat Converter Atomic Mass Unit To Carat Converter

Related Weight Units

These guides help you compare carat with nearby weight units before choosing the conversion you need.

Milligram Guide Kilogram Guide Gram Guide Metric Ton Guide Long Ton Guide Short Ton Guide

FAQ

What is carat used for?

Carats are used mainly in jewelry and gemstone trade, where weight is part of how stones are described, compared, and priced.

How do I convert carat into another weight unit?

Use the live converter on this page for a quick result, or open one of the pair pages below if you want formula notes and a reference table.

Why keep a separate carat guide page?

The unit guide gives context about the unit itself, while pair pages focus on one conversion path at a time. Keeping both helps the site feel easier to browse.

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