Carat to Gram Converter
Convert Carats to Grams
Quick Conversions
How to Convert Carats to Grams
The conversion from carats to grams is simple. One carat is defined as exactly 0.2 grams. For more information about carats as a unit of measurement, visit our carats page.
Formula
Grams = Carats × 0.2
or
g = ct × 0.2
Step-by-step process
- Take the measurement in carats
- Multiply that number by 0.2
- The result is the equivalent weight in grams
Examples
- 5 carats = 5 × 0.2 = 1 gram
- 10 carats = 10 × 0.2 = 2 grams
- 25 carats = 25 × 0.2 = 5 grams
- 50 carats = 50 × 0.2 = 10 grams
When to Convert Carats to Grams
Converting carats to grams is common in the jewelry and gemstone industry, as well as in scientific contexts.
Jewelry & Gemstones
While carats are the standard for individual stones, grams are often used for bulk quantities of smaller gems or for finished jewelry pieces.
Scientific & Lab Use
In scientific research and laboratories, grams are the standard unit of mass. Any measurements taken in carats would be converted to grams for calculations and data logging.
Common Carats to Grams Conversions
Here is a table of common carat to gram conversions for quick reference:
| Carats (ct) | Grams (g) | Carats (ct) | Grams (g) |
|---|---|---|---|
| 1 | 0.2 | 50 | 10 |
| 2 | 0.4 | 75 | 15 |
| 5 | 1 | 100 | 20 |
| 10 | 2 | 250 | 50 |
| 15 | 3 | 500 | 100 |
| 20 | 4 | 750 | 150 |
| 25 | 5 | 1,000 | 200 |
| 30 | 6 | 5,000 | 1,000 |
Other conversions from carats
Carats can be converted to various other units of mass. Here are some common conversions:
Other conversions to grams
Various units can be converted to grams. Here are some common conversions:
Frequently Asked Questions
How many grams are in a carat?
There are exactly 0.2 grams in one carat.
Why is a carat 0.2 grams?
The 0.2 gram standard for the metric carat was adopted in 1907 to create a consistent international measure for gemstones.