Gram to Carat Converter
Convert Gram (g) to Carat (ct) instantly. 1 g = 5 ct.
Mass Converter
26 units available
1 g = 5 ct
Formula:
ct = g × 5With your value: 1 g = 5 ct
How big is that?
Everyday references on a logarithmic scale, all expressed in gram so you can sanity-check the result.
Other Gram to Carat conversions
Gram to Carat Conversion Table
| Gram (g) | Carat (ct) |
|---|---|
| 0.5 | 2.5 |
| 1 | 5 |
| 2 | 10 |
| 5 | 25 |
| 10 | 50 |
| 15 | 75 |
| 20 | 100 |
| 25 | 125 |
| 50 | 250 |
| 100 | 500 |
| 250 | 1,250 |
| 500 | 2,500 |
| 1000 | 5,000 |
Carat to Gram Conversion Table
| Carat (ct) | Gram (g) |
|---|---|
| 0.5 | 0.1 |
| 1 | 0.2 |
| 2 | 0.4 |
| 5 | 1 |
| 10 | 2 |
| 15 | 3 |
| 20 | 4 |
| 25 | 5 |
| 50 | 10 |
| 100 | 20 |
| 250 | 50 |
| 500 | 100 |
| 1000 | 200 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Gram (g)
Mass
Traceable to the kilogram, defined by fixing the Planck constant at 6.626 070 15 × 10⁻³⁴ J·s. Avoirdupois masses derive from the 1959 international pound (0.453 592 37 kg exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
Carat (ct)
Mass
The metric carat is exactly 200 mg, agreed internationally in 1907.
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Gram to Carat
To convert from Gram (g) to Carat (ct), multiply the value by 5.
Formula: ct = g × 5
Reverse: g = ct × 0.2
Step-by-Step Example
- Start with your value in Gram. For example: 5 g
- Multiply by the conversion factor: 5 x 5
- The result is: 25 ct
About Gram
The gram equals one thousandth of a kilogram. It is commonly used for measuring food, ingredients, and small items.
Common uses: cooking, nutrition labels, jewelry.
About Carat
The carat equals 200 milligrams and is the standard unit for measuring gemstone weight.
Fun Fact: The word "carat" comes from the carob seed, which was used as a balance weight in ancient gem trading.
Common uses: gemstones, diamonds, jewelry.
Frequently Asked Questions
How many Carat are in 1 Gram?
There are exactly 5 Carat in 1 Gram. This means the conversion factor from Gram to Carat is 5.
What is the formula to convert Gram to Carat?
The formula to convert Gram to Carat is: ct = g × 5. For example, to convert 10 Gram to Carat, you would multiply 10 by 5.
What is a Gram?
The gram equals one thousandth of a kilogram. It is commonly used for measuring food, ingredients, and small items.
What is a Carat?
The carat equals 200 milligrams and is the standard unit for measuring gemstone weight.
What are the common uses of Gram?
The Gram is commonly used in cooking, nutrition labels, jewelry.
Related Mass Conversions
Cite this page
UnitConvertLab. (2026). Gram to Carat converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/gram-to-carat