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Weight & Mass Converter

Carat to Gram Converter

Convert Carat (ct) to Gram (g) instantly with our interactive tool, benchmark tables, and detailed unit information.

1 ct = 0.2000 g
Editable
ct
Input
Auto-Calculated
g
Result
Weight & Mass conversion — instant results

Convert Carat to Gram

1 ct = 0.2000 g
Carat (ct) Gram (g)
1 ct 0.2 g
5 ct 1 g
10 ct 2 g
25 ct 5 g
50 ct 10 g
100 ct 20 g
500 ct 100 g
1,000 ct 200 g

Convert Gram to Carat

1 g = 5.0000 ct
Gram (g) Carat (ct)
1 g 5 ct
5 g 25 ct
10 g 50 ct
25 g 125 ct
50 g 250 ct
100 g 500 ct
500 g 2,500 ct
1,000 g 5,000 ct

About Carat and Gram

Detailed information about both units of measurement.

METRIC UNIT

Carat

ct
Definition
A unit of mass equal to 200 milligrams (0.2 grams). Used exclusively for gemstones and pearls.
SI / Standard Information
Defined as exactly 200 mg. The word derives from carob seeds, historically used as counterweights in ancient trade.
Approximate Comparison
A carat is roughly the weight of a small paperclip or a grain of rice.
Practical Applications
  • Diamond and gemstone weighing
  • Pearl grading and valuation
  • Jewelry industry standards
  • Precious stone trading
Real-World Examples
  • A typical engagement ring diamond is 0.5 to 1 carat
  • The Hope Diamond weighs 45.52 carats
  • A 1-carat diamond is about the size of a small pea
METRIC UNIT

Gram

g
Definition
A metric unit of mass equal to 1/1,000 of a kilogram. The base unit for most food and small-scale measurements.
SI / Standard Information
SI-derived unit (g). The gram is the base unit of the CGS system. Originally defined as the mass of 1 cm³ of water at 4°C.
Approximate Comparison
A gram is roughly the weight of a standard paperclip or a single raisin.
Practical Applications
  • Cooking and baking ingredient measurement
  • Nutritional labeling on food products
  • Jewelry weighing
  • Mail and postage calculation
Real-World Examples
  • A standard paperclip weighs about 1 gram
  • A small apple weighs approximately 150 grams
  • A typical letter weighs 20 to 30 grams

About Converting Carat to Gram

Our Carat to Gram converter provides instant, accurate conversion between these two essential weight & mass units. Whether you are working in engineering, construction, education, or everyday weight & mass measurement, this tool delivers precise results with zero friction.

The Carat (ct) is a metric unit of weight & mass. A unit of mass equal to 200 milligrams (0.2 grams). Used exclusively for gemstones and pearls. A carat is roughly the weight of a small paperclip or a grain of rice.

The Gram (g) is a metric unit of weight & mass. A metric unit of mass equal to 1/1,000 of a kilogram. The base unit for most food and small-scale measurements. A gram is roughly the weight of a standard paperclip or a single raisin.

Conversion Formula & Worked Examples

The conversion between ct and g uses the following mathematical relationship:

Gram = Carat × 0.200000

Carat = Gram × 5.000000

Whether you need to convert for diamond and gemstone weighing or cooking and baking ingredient measurement, our interactive converter provides instant, accurate results.

Example

1 ct

=

0.2 g

Example

5 ct

=

1 g

Example

10 ct

=

2 g

Reverse Direction

Need to convert Gram back into Carat?

Switch conversion direction to view Gram → Carat tables, benchmarks, and detailed info.

Open Gram → Carat

Practical Use Cases & Applications

ct Carat

  • Diamond and gemstone weighing
  • Pearl grading and valuation
  • Jewelry industry standards
  • Precious stone trading

g Gram

  • Cooking and baking ingredient measurement
  • Nutritional labeling on food products
  • Jewelry weighing
  • Mail and postage calculation

Frequently Asked Questions

Common questions about this conversion and related measurement topics.

How do I convert Carat to Gram?
To convert Carat (ct) to Gram (g), multiply the carat value by the conversion factor. Our converter below handles this instantly — just enter the value in ct and the g result appears in real time.
How many Grams are in one carat?
One carat (ct) equals approximately 0.200000 gram (g). This conversion factor is constant and can be used for any carat value.
What is the formula to convert ct to g?
The conversion formula is: <strong>Gram = Carat × 0.200000</strong>. For example, 5 ct × 0.2000 = 1.0000 g, and 10 ct × 0.2000 = 2.0000 g.
Can I convert Gram back to Carat?
Yes! Use the reverse direction on our converter, or visit our dedicated <a href="/weight-and-mass/grams-to-carats/" class="text-accent-teal underline">Gram to Carat converter</a>. The reverse conversion factor is approximately 1 g = 5.000000 ct.
Where is Carat commonly used?
Diamond and gemstone weighing, Pearl grading and valuation, Jewelry industry standards. A unit of mass equal to 200 milligrams (0.2 grams). Used exclusively for gemstones and pearls.
What is the difference between Carat and Gram?
Carat (ct) and Gram (g) are both units of weight & mass. Carat belongs to the metric system, while Gram belongs to the metric system. Understanding the conversion between them is essential for international work in weight measurement.
What are some real-world examples of carats and grams?
Carat: A typical engagement ring diamond is 0.5 to 1 carat; The Hope Diamond weighs 45.52 carats Gram: A standard paperclip weighs about 1 gram; A small apple weighs approximately 150 grams

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About This Conversion ℹ

This Carat to Gram converter provides accurate, real-time conversions between these two weight & mass units.

Both units are among the most commonly used weight & mass measurements — rated 6/10 and 9/10 in popularity.

Bookmark this page for quick access to the Carat → Gram converter whenever you need precise unit conversion.

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