Grain to Carat Converter

1 Grain = 0.32399455 Carat
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Grain vs Carat Comparison Chart

Source - GrainTarget - Carat

Grain (gr) - Definition and Overview

What is Grain?

A grain is a unit of mass that is part of the avoirdupois, apothecaries, and troy weight systems. 1 grain is equal to 0.06479891 grams. It is historically based on the weight of a single grain of cereal, such as wheat or barley.

Summary

  • A grain is a traditional unit of mass that is based on the weight of a single grain of cereal, such as wheat or barley
  • It is used in the avoirdupois, apothecaries, and troy weight systems
  • One grain is equal to approximately 0.06479891 grams.

Carat (ct) - Definition and Overview

What is Carat?

The carat (ct) is a unit of mass equal to 200 mg, and is used for measuring gemstones and pearls.

Summary

  • A carat is a unit of mass used for measuring gemstones and pearls
  • One carat is equal to 200 milligrams (0.2 grams)
  • The carat is a standard unit in the jewelry industry for expressing the weight of diamonds and other precious stones.

How to Convert Grain to Carat?

1 Grain is equal to 0.32399455 Carat. To convert Grain to Carat, use this simple formula:

Carat = Grain x 0.32399455

So, just multiply the number of Grain by 0.32399455 to get equivalent value in Carat.

Example 1:

Convert 5 Grain to Carat
5 x 0.32399455 = 1.61997275 Carat

Example 2:

Convert 7.5 Grain to Carat
7.5 x 0.32399455 = 2.429959125 Carat

Author Information

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Rajesh V U

Full-Stack Developer & Storage Technologist | Creator of UnitSmash.com
Last updated: September 1, 2026

I am a Storage Technologist with strong experience in enterprise storage systems, Angular development, and web-based tools. I enjoy building practical calculators, converters, and utilities, and I also create original cartoons. I share my tools, articles, and creative work on my personal website, rajeshvu.com.

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