Convert Nanograms to Carats
Convert Nanograms (ng) to Carats (ct) instantly and accurately.
Conversion Formula
ct = ng × 5.000000000e-9
About Nanograms
A nanogram (ng) is one billionth of a gram (10⁻⁹ g). This is the standard mass unit in analytical chemistry, pharmacology, and toxicology for detecting trace substances. Blood plasma concentrations of hormones, drugs, and environmental contaminants are routinely reported in nanograms per milliliter (ng/mL). A typical therapeutic blood level for many medications is in the range of 10-500 ng/mL. In forensic science, nanogram-level DNA quantities can be amplified by PCR to yield a full genetic profile.
About Carats
A metric carat (ct or CD) is exactly 200 milligrams (0.2 g), the universal standard for weighing gemstones. Established internationally in 1907, it replaced fractionally different regional carat weights previously used in different countries. The total weight of a diamond or colored gemstone is always expressed in carats: a 1.00 ct diamond of excellent cut and color can command over $5,000. The Cullinan diamond, the largest gem-quality rough diamond ever found, weighed 3,106.75 carats.
Quick Reference Table
| Nanograms (ng) | Carats (ct) |
|---|---|
| 1 ng | 5 × 10-9 ct |
| 2 ng | 1 × 10-8 ct |
| 5 ng | 2.5 × 10-8 ct |
| 10 ng | 5 × 10-8 ct |
| 25 ng | 1.25 × 10-7 ct |
| 50 ng | 2.5 × 10-7 ct |
| 100 ng | 5 × 10-7 ct |