Carat

ct

Unit for gemstone weight (200 mg)

About Carat (ct)

The metric carat equals exactly 200 milligrams and is the universal standard for measuring gemstone weight. Adopted internationally in 1907, the carat originated from the carob seed, which ancient gem traders believed had remarkably uniform weight. A one-carat diamond is approximately 6.5 mm in diameter.

Category
Weight & Mass
Symbol
ct
Also known as
carats ct karat
01

CONVERT TO

Kilogram kg Gram g Milligram mg Microgram µg Metric Ton t Pound lb Ounce oz Stone st Short Ton ton Long Ton long tn Grain gr Troy Ounce oz t Slug slug

Frequently Asked Questions

What is a Carat (ct)?

Unit for gemstone weight (200 mg)

How many Kilogram (kg) are in one Carat (ct)?

One Carat (ct) equals 0.0002 Kilogram (kg).

How many Gram (g) are in one Carat (ct)?

One Carat (ct) equals 0.2 Gram (g).

How many Milligram (mg) are in one Carat (ct)?

One Carat (ct) equals 200 Milligram (mg).

How do I convert Carat to Kilogram?

To convert Carat to Kilogram, multiply the value by 0.0002 (1 ct = 0.0002 kg).