Nanogram is 1e-9 gram units.
Nanograms to Carats Converter — ng to ct
Convert Nanogram (ng) to Carat (ct) using the exact conversion factor (1 nanogram = 5e-9 carat). See the formula, worked examples, and conversion table.
Nanograms 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-12 / 0.0002.
Mass uses the kilogram as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Nanograms to Carats
Weight conversions between Nanogram 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: Nanogram is 1e-9 gram units, and a metric carat is exactly 200 milligrams.
Formula
carats = nanograms × 5e-9
This factor comes from each unit's defined relationship to the category's base unit: 1 nanogram equals 1e-12 base units, and 1 carat equals 0.0002 base units, so dividing one by the other gives the direct nanogram-to-carat factor of 5e-9.
Simple example
1 ng × 5e-9 = 5e-9 ct
1 nanogram = 5e-9 carats.
Real-world example
50 ng × 5e-9 = 2.5e-7 ct
50 nanograms = 2.5e-7 carats.
Conversion table
| Nanogram (ng) | Carat (ct) |
|---|---|
| 1 ng | 5e-9 ct |
| 5 ng | 2.5e-8 ct |
| 10 ng | 5e-8 ct |
| 25 ng | 1.25e-7 ct |
| 50 ng | 2.5e-7 ct |
| 100 ng | 5e-7 ct |
Reverse conversion: Carat to Nanogram
5e-9 ct × 200000000 = 1 ng
5e-9 carats = 1 nanograms.
nanograms = carats × 200000000
For a page dedicated to this direction, see Carat to Nanogram.
Understanding the Nanogram (ng)
Nanogram is 1e-9 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 nanogram?
1 nanogram equals 5e-9 carats, using the exact defined conversion factor rather than an estimate.
How do I convert nanogram to carat?
Multiply the nanogram value by 5e-9. The converter above does this instantly to whatever precision you set.
How do I convert carat back to nanogram?
Use the reverse factor: 1 carat equals 200,000,000 nanograms. You can also use the swap control in the converter above to flip the direction instantly.
What is a nanogram?
Nanogram (ng) is a unit of mass/weight.
What is a carat?
Carat (ct) is a unit of mass/weight.
Is the nanogram to carat conversion exact?
Yes. Both nanogram and carat are defined by fixed standards rather than physical artifacts, so the factor of 5e-9 used above is exact to as many digits as you choose to display.