Use this free, accurate carat (diamond / gemstone) to gram calculator to convert between Carat (Diamond / Gemstone) (ct) and Gram (g). Includes live instant results, complete mathematical formulas, conversion tables, and step-by-step examples.
0.2 Gram
1 ct is equal to 0.2 g.
g = ct × 0.2
precious-metals Converters
To convert from Carat (Diamond / Gemstone) to Gram, multiply the value in Carat (Diamond / Gemstone) by 0.2 (or use the formula: g = ct × 0.2).
Take your initial measurement in Carat (Diamond / Gemstone) (ct). For instance, let's convert 1 ct.
Multiply by the standard conversion factor (0.2).
The final converted measurement equals 0.2 Gram (g).
Compare standard reference values and common conversion benchmarks.
| Carat (Diamond / Gemstone) (ct) | Gram (g) | Action |
|---|---|---|
| 1 ct | 0.2 g | |
| 2 ct | 0.4 g | |
| 3 ct | 0.6 g | |
| 5 ct | 1 g | |
| 10 ct | 2 g | |
| 15 ct | 3 g | |
| 20 ct | 4 g | |
| 25 ct | 5 g | |
| 50 ct | 10 g | |
| 75 ct | 15 g | |
| 100 ct | 20 g | |
| 250 ct | 50 g | |
| 500 ct | 100 g | |
| 1000 ct | 200 g |
Official standards, measurement systems, and real-world everyday applications.
The global unit of mass for gemstones and diamonds, defined as exactly 200 milligrams (0.2 grams or 100 points).
Common Practical Uses
The metric base unit of mass widely used worldwide for jewelry, bullion bars, and gold pricing.
Common Practical Uses
Calculate from Gram (g) back to Carat (Diamond / Gemstone) (ct).
Frequently used unit conversions in this category:
Explore other measurement and calculation tools:
There are 0.2 grams in 1 carats. Exactly 1 ct is equal to 0.2 g.
The conversion formula is: Gram = g = ct × 0.2. Applying this to 1 ct gives: 1 × 0.2 = 0.2 g.
To convert in reverse from grams to carats, multiply by the inverse factor: 1 g = 5 ct. Alternatively, divide your Gram amount by 0.2.
To calculate in your head, round the conversion multiplier (0.2) to the nearest easy whole or decimal number.
Carat (Diamond / Gemstone) (ct) belongs to the Gemstone Standard system, commonly used in Diamond weight, Ruby, sapphire, and emerald sizing, Pearl evaluation. In comparison, Gram (g) is part of the Metric (SI) system, frequently applied in Gold pricing per gram, Silver bars, Jewelry weight.
Key milestones include: 1 ct = 0.2 g, 5 ct = 1 g, 10 ct = 2 g, 50 ct = 10 g, and 100 ct = 20 g.