A metric carat is exactly 200 milligrams.
Carats to Hectograms Converter — ct to hg
Convert Carat (ct) to Hectogram (hg) using the exact conversion factor (1 carat = 0.002 hectogram). See the formula, worked examples, and conversion table.
Carats to Hectograms converter
Converter
Mass/Weight Converter
Convert SI mass, imperial weight, jewelry, atomic, and astronomy mass units.
Context values
Some unit families need one extra value for a physically accurate result.
Hectogram is 100 gram units.
Result = input x 0.0002 / 0.1.
Mass uses the kilogram as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Carats to Hectograms
Weight conversions between Carat and Hectogram come up constantly in everyday commerce, shipping, and cooking, since US packaging is usually labeled in pounds while most of the rest of the world uses kilograms. Specifically: A metric carat is exactly 200 milligrams, and hectogram is 100 gram units.
Formula
hectograms = carats × 0.002
This factor comes from each unit's defined relationship to the category's base unit: 1 carat equals 0.0002 base units, and 1 hectogram equals 0.1 base units, so dividing one by the other gives the direct carat-to-hectogram factor of 0.002.
Simple example
1 ct × 0.002 = 0.002 hg
1 carat = 0.002 hectograms.
Real-world example
50 ct × 0.002 = 0.1 hg
50 carats = 0.1 hectograms.
Conversion table
| Carat (ct) | Hectogram (hg) |
|---|---|
| 1 ct | 0.002 hg |
| 5 ct | 0.01 hg |
| 10 ct | 0.02 hg |
| 25 ct | 0.05 hg |
| 50 ct | 0.1 hg |
| 100 ct | 0.2 hg |
Reverse conversion: Hectogram to Carat
0.002 hg × 500 = 1 ct
0.002 hectograms = 1 carat.
carats = hectograms × 500
For a page dedicated to this direction, see Hectogram to Carat.
Understanding the Carat (ct)
A metric carat is exactly 200 milligrams.
Understanding the Hectogram (hg)
Hectogram is 100 gram units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many hectograms are in 1 carat?
1 carat equals 0.002 hectograms, using the exact defined conversion factor rather than an estimate.
How do I convert carat to hectogram?
Multiply the carat value by 0.002. The converter above does this instantly to whatever precision you set.
How do I convert hectogram back to carat?
Use the reverse factor: 1 hectogram equals 500 carats. You can also use the swap control in the converter above to flip the direction instantly.
What is a carat?
Carat (ct) is a unit of mass/weight.
What is a hectogram?
Hectogram (hg) is a unit of mass/weight.
Is the carat to hectogram conversion exact?
Yes. Both carat and hectogram are defined by fixed standards rather than physical artifacts, so the factor of 0.002 used above is exact to as many digits as you choose to display.