Carats to Grams Converter

Convert carats (ct) to grams (g) for diamonds, emeralds, rubies, and gemstones. In international gemology, 1 carat equals exactly 0.20 grams (200 mg).

Instant Weight Calculator

Weight Conversion Tool

Enter amount and select units for real-time accurate calculation.

Rounding
Result
0.2g
1 Carats = 0.2 Grams
Formula: Grams = Carats × 0.2
📐View Step-by-Step Calculation Formula
  1. Identify the conversion formula: Grams = Carats × 0.2
  2. Substitute the value (1 ct) into the formula: 1 × 0.2
  3. Perform the multiplication to obtain the weight in grams: 0.2 g
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📐 Carat to Gram Conversion Formula

To convert carats to grams, multiply your carat measurement by the conversion ratio 0.2.

Mathematical Formula
Grams = Carats × 0.2

How to calculate carats to grams:

To convert carats to grams, multiply the carat value by 0.2 (or divide by 5).

💡 Practical CT to G Examples

1 ct=0.2 g
1.0 carat diamond (200 mg)
5 ct=1 g
5.0 carats gemstone = 1.0 gram
50 ct=10 g
50 carats raw gemstone

📊 Carats to Grams Reference Table

6 Decimal Precision
Carats (ct)Grams (g)
0.5 ct0.1 g
1 ct0.2 g
1.5 ct0.3 g
2 ct0.4 g
3 ct0.6 g
5 ct1 g
10 ct2 g
25 ct5 g
50 ct10 g
100 ct20 g

⚡ Exact-Value & Decimal Guides (CT to G)

Explore dedicated exact-value guides featuring precision decimal tables, formulas, and real-world benchmarks:

0 01 CARAT TO GRAM →0 02 CARAT TO GRAM →0 03 CARAT TO GRAM →0 04 CARAT TO GRAM →0 05 CARAT TO GRAM →0 06 CARAT TO GRAM →0 1 CARAT TO GRAM →0 11 CARAT TO GRAM →0 15 CARAT TO GRAM →0 25 CARAT TO GRAM →0 3 CARAT TO GRAM →0 5 CARAT TO GRAM →0 7 CARAT TO GRAM →1 CARAT TO GRAM →2 CARAT TO GRAM →3 CARAT TO GRAM →3 5 CARAT TO GRAM →4 CARAT TO GRAM →4 5 CARAT TO GRAM →4 8 CARAT TO GRAM →5 CARAT TO GRAM →5 5 CARAT TO GRAM →6 CARAT TO GRAM →6 5 CARAT TO GRAM →7 CARAT TO GRAM →7 25 CARAT TO GRAM →7 5 CARAT TO GRAM →8 CARAT TO GRAM →9 CARAT TO GRAM →10 CARAT TO GRAM →18 CARAT TO GRAM →20 CARAT TO GRAM →22 CARAT TO GRAM →24 CARAT TO GRAM →30 CARAT TO GRAM →37 CARAT TO GRAM →40 CARAT TO GRAM →41 CARAT TO GRAM →42 CARAT TO GRAM →43 CARAT TO GRAM →50 CARAT TO GRAM →56 CARAT TO GRAM →60 CARAT TO GRAM →70 CARAT TO GRAM →80 CARAT TO GRAM →100 CARAT TO GRAM →400 CARAT TO GRAM →500 CARAT TO GRAM →800 CARAT TO GRAM →3000 CARAT TO GRAM →

Frequently Asked Questions (CT to G)

Find answers to common questions about weight units, conversion formulas, and calculations.

How many grams are in 1 carat?

There are exactly 0.2 grams (200 milligrams) in 1 metric carat (ct).

Is gemstone carat the same as gold karat?

No. Gemstone "carat" (ct) measures mass (0.2 g). Gold "karat" (k) measures gold purity (e.g. 24k is 100% pure gold).

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