Microgram is 0.000001 gram units.
Micrograms to Carats Converter — ug to ct
Convert Microgram (ug) to Carat (ct) using the exact conversion factor (1 microgram = 0.000005 carat). See the formula, worked examples, and conversion table.
Micrograms to Carats 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.
A metric carat is exactly 200 milligrams.
Result = input x 1e-9 / 0.0002.
Mass uses the kilogram as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Micrograms to Carats
Weight conversions between Microgram and Carat 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: Microgram is 0.000001 gram units, and a metric carat is exactly 200 milligrams.
Formula
carats = micrograms × 0.000005
This factor comes from each unit's defined relationship to the category's base unit: 1 microgram equals 1e-9 base units, and 1 carat equals 0.0002 base units, so dividing one by the other gives the direct microgram-to-carat factor of 0.000005.
Simple example
1 ug × 0.000005 = 0.000005 ct
1 microgram = 0.000005 carats.
Real-world example
50 ug × 0.000005 = 0.00025 ct
50 micrograms = 0.00025 carats.
Conversion table
| Microgram (ug) | Carat (ct) |
|---|---|
| 1 ug | 0.000005 ct |
| 5 ug | 0.000025 ct |
| 10 ug | 0.00005 ct |
| 25 ug | 0.000125 ct |
| 50 ug | 0.00025 ct |
| 100 ug | 0.0005 ct |
Reverse conversion: Carat to Microgram
0.000005 ct × 200000 = 1 ug
0.000005 carats = 1 microgram.
micrograms = carats × 200000
For a page dedicated to this direction, see Carat to Microgram.
Understanding the Microgram (ug)
Microgram is 0.000001 gram units.
Understanding the Carat (ct)
A metric carat is exactly 200 milligrams.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many carats are in 1 microgram?
1 microgram equals 0.000005 carats, using the exact defined conversion factor rather than an estimate.
How do I convert microgram to carat?
Multiply the microgram value by 0.000005. The converter above does this instantly to whatever precision you set.
How do I convert carat back to microgram?
Use the reverse factor: 1 carat equals 200,000 micrograms. You can also use the swap control in the converter above to flip the direction instantly.
What is a microgram?
Microgram (ug) is a unit of mass/weight.
What is a carat?
Carat (ct) is a unit of mass/weight.
Is the microgram to carat conversion exact?
Yes. Both microgram and carat are defined by fixed standards rather than physical artifacts, so the factor of 0.000005 used above is exact to as many digits as you choose to display.