Carat to Gigagram Converter
Unit Converter
Instant · Precise · Universal
34 units available
6 categories total
How to Convert Carat to Gigagram
To convert carats to grams: multiply by 0.2. To convert grams to carats: multiply by 5.
1 ct = 0.2 g = 200 mg = 0.007055 oz.
For example, 1 Carat (ct) = 2.000000e-10 Gigagram (Gg).
Carat to Gigagram — Common Values
| Carat (ct) | Gigagram (Gg) |
|---|---|
| 0.1 | 2.000000e-11 |
| 0.5 | 1.000000e-10 |
| 1 | 2.000000e-10 |
| 2 | 4.000000e-10 |
| 5 | 1.000000e-9 |
| 10 | 2.000000e-9 |
| 25 | 5.000000e-9 |
| 50 | 1.000000e-8 |
| 100 | 2.000000e-8 |
| 500 | 1.000000e-7 |
| 1000 | 2.000000e-7 |
About Carat (ct)
Definition
The carat is a unit of mass used for gemstones and pearls, equal to exactly 200 milligrams (0.2 grams).
Mathematical Relationship
1 ct = 0.2 g = 200 mg = 0.007055 oz.
Conversion Formula
To convert carats to grams: multiply by 0.2. To convert grams to carats: multiply by 5.
Practical Applications
Diamond grading and pricing, gemstone trade, pearl classification, and jewelry appraisal.
Interesting Facts
The Hope Diamond weighs 45.52 ct (9.1 g). The Cullinan Diamond, the largest gem-quality rough diamond ever found, was 3,106 ct (621 g).
Common Mistakes
Confusing carat (ct, mass) with karat (K, gold purity). 24K gold is pure gold; a 24-carat diamond weighs 4.8 g.
Educational Tips
Carat = weight of a gem. Karat = purity of gold. They sound the same but measure completely different things.
About Gigagram (Gg)
Definition
The gigagram is equal to 10⁹ grams or 1,000 tonnes (metric tons).
Mathematical Relationship
1 Gg = 10⁹ g = 10⁶ kg = 1,000 tonnes.
Conversion Formula
To convert Gg to tonnes: multiply by 1,000. To convert Gg to kg: multiply by 10⁶.
Practical Applications
National emissions reports, large mining output figures, and major commodity trade volumes.
Interesting Facts
The Great Pyramid of Giza has an estimated mass of about 6,000 Gg (6 million tonnes).
Common Mistakes
Confusing Gg (gigagram) with GB (gigabyte). In mass contexts, G always means giga = 10⁹.
Educational Tips
1 Gg = 1 kilotonne = 1,000 tonnes. Used when 'tonnes' gets unwieldy for very large masses.