A metric carat is exactly 200 milligrams.
Carats to Picograms Converter — ct to pg
Convert Carat (ct) to Picogram (pg) using the exact conversion factor (1 carat = 200,000,000,000 picogram). See the formula, worked examples, and conversion table.
Carats to Picograms 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.
Picogram is 1e-12 gram units.
Result = input x 0.0002 / 1e-15.
Mass uses the kilogram as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Carats to Picograms
Weight conversions between Carat and Picogram 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 picogram is 1e-12 gram units.
Formula
picograms = carats × 200000000000
This factor comes from each unit's defined relationship to the category's base unit: 1 carat equals 0.0002 base units, and 1 picogram equals 1e-15 base units, so dividing one by the other gives the direct carat-to-picogram factor of 200000000000.
Simple example
1 ct × 200000000000 = 200,000,000,000 pg
1 carat = 200,000,000,000 picograms.
Real-world example
50 ct × 200000000000 = 1e+13 pg
50 carats = 1e+13 picograms.
Conversion table
| Carat (ct) | Picogram (pg) |
|---|---|
| 1 ct | 200,000,000,000 pg |
| 5 ct | 1e+12 pg |
| 10 ct | 2e+12 pg |
| 25 ct | 5e+12 pg |
| 50 ct | 1e+13 pg |
| 100 ct | 2e+13 pg |
Reverse conversion: Picogram to Carat
1 pg × 5e-12 = 5e-12 ct
1 picogram = 5e-12 carats.
carats = picograms × 5e-12
For a page dedicated to this direction, see Picogram to Carat.
Understanding the Carat (ct)
A metric carat is exactly 200 milligrams.
Understanding the Picogram (pg)
Picogram is 1e-12 gram units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many picograms are in 1 carat?
1 carat equals 200,000,000,000 picograms, using the exact defined conversion factor rather than an estimate.
How do I convert carat to picogram?
Multiply the carat value by 200000000000. The converter above does this instantly to whatever precision you set.
How do I convert picogram back to carat?
Use the reverse factor: 1 picogram equals 5e-12 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 picogram?
Picogram (pg) is a unit of mass/weight.
Is the carat to picogram conversion exact?
Yes. Both carat and picogram are defined by fixed standards rather than physical artifacts, so the factor of 200000000000 used above is exact to as many digits as you choose to display.