Carat Weight Calculator
Convert between carats and grams. Carats are used for gemstones and diamonds. 1 carat = 0.2 grams = 200 milligrams.
How to Use This Calculator
- Select whether to convert from carats or grams.
- Enter the weight value.
- The calculator displays the conversion in carats, grams, and milligrams.
- Use this to convert gemstone weights between units.
Carat Weight Conversion Formula
Carats are converted to grams and milligrams:
1 Carat = 200 Milligrams
Grams = Carats × 0.2
Carats = Grams / 0.2
Milligrams = Carats × 200
Example: 1 carat = 0.2 grams = 200 milligrams. 2.5 carats = 0.5 grams = 500 milligrams. 5 carats = 1.0 gram = 1,000 milligrams. The calculator converts between all three units automatically.
Full Description
The Carat Weight Calculator converts between carats, grams, and milligrams. A carat is a unit of weight specifically used for gemstones and diamonds. One carat equals 0.2 grams or 200 milligrams. Carats are divided into 100 points, where 1 point = 0.01 carat. This unit is used worldwide for measuring gemstone weight.
The conversion is straightforward: 1 carat = 0.2 grams = 200 milligrams. To convert carats to grams, multiply by 0.2. To convert grams to carats, divide by 0.2. The calculator handles conversions in both directions and displays results in carats, grams, and milligrams. Note: Carat (ct) is different from Karat (kt or K), which measures gold purity, not weight.
This calculator helps you convert gemstone weights. Enter carats or grams, and it converts to all three units. Use it for diamond shopping, gemstone measurements, understanding carat weights, or converting between units. Remember, carat measures weight, not size—two diamonds of the same carat weight can have different sizes depending on cut and shape!
Frequently Asked Questions
What is a carat?
A carat is a unit of weight for gemstones and diamonds. 1 carat = 0.2 grams = 200 milligrams. Carats are divided into 100 points (0.01 carat = 1 point). Example: 1.5 carats = 0.3 grams = 300 milligrams. Carats are used worldwide for measuring gemstone weight.
How do I convert carats to grams?
Grams = Carats × 0.2. Example: 1 carat = 0.2 grams, 2 carats = 0.4 grams, 5 carats = 1.0 gram. The calculator does this conversion automatically. You can also convert from grams to carats: Carats = Grams / 0.2.
What about points?
Carats are divided into 100 points. 1 point = 0.01 carat. Example: 1.25 carats = 1 carat and 25 points. Points are used for precise measurements, especially for smaller diamonds. Jewelers often refer to diamonds by points (e.g., "25 points" = 0.25 carats).
Is carat the same as karat?
No! Carat (ct) = weight unit for gemstones (1 carat = 0.2g). Karat (kt or K) = purity unit for gold (24K = pure gold, 18K = 75% gold). They sound the same but measure different things. Carat measures weight, karat measures purity.