Carats to Micrograms (ct → µg)
Formula
1 ct = 200000 µgConversion Table
| ct | µg |
|---|---|
| 0 | 0 |
| 1.0000 | 200,000 |
| 2.0000 | 400,000 |
| 3.0000 | 600,000 |
| 4.0000 | 800,000 |
| 5.0000 | 1,000,000 |
| 6.0000 | 1,200,000 |
| 7.0000 | 1,400,000 |
| 8.0000 | 1,600,000 |
| 9.0000 | 1,800,000 |
| 10.000 | 2,000,000 |
| 11.000 | 2,200,000 |
| 12.000 | 2,400,000 |
| 13.000 | 2,600,000 |
| 14.000 | 2,800,000 |
| 15.000 | 3,000,000 |
| 16.000 | 3,200,000 |
| 17.000 | 3,400,000 |
| 18.000 | 3,600,000 |
| 19.000 | 3,800,000 |
| ct | µg |
|---|---|
| 20.000 | 4,000,000 |
| 21.000 | 4,200,000 |
| 22.000 | 4,400,000 |
| 23.000 | 4,600,000 |
| 24.000 | 4,800,000 |
| 25.000 | 5,000,000 |
| 26.000 | 5,200,000 |
| 27.000 | 5,400,000 |
| 28.000 | 5,600,000 |
| 29.000 | 5,800,000 |
| 30.000 | 6,000,000 |
| 31.000 | 6,200,000 |
| 32.000 | 6,400,000 |
| 33.000 | 6,600,000 |
| 34.000 | 6,800,000 |
| 35.000 | 7,000,000 |
| 36.000 | 7,200,000 |
| 37.000 | 7,400,000 |
| 38.000 | 7,600,000 |
| 39.000 | 7,800,000 |
| ct | µg |
|---|---|
| 40.000 | 8,000,000 |
| 41.000 | 8,200,000 |
| 42.000 | 8,400,000 |
| 43.000 | 8,600,000 |
| 44.000 | 8,800,000 |
| 45.000 | 9,000,000 |
| 46.000 | 9,200,000 |
| 47.000 | 9,400,000 |
| 48.000 | 9,600,000 |
| 49.000 | 9,800,000 |
| 50.000 | 10,000,000 |
| 51.000 | 10,200,000 |
| 52.000 | 10,400,000 |
| 53.000 | 10,600,000 |
| 54.000 | 10,800,000 |
| 55.000 | 11,000,000 |
| 56.000 | 11,200,000 |
| 57.000 | 11,400,000 |
| 58.000 | 11,600,000 |
| 59.000 | 11,800,000 |
| ct | µg |
|---|---|
| 60.000 | 12,000,000 |
| 61.000 | 12,200,000 |
| 62.000 | 12,400,000 |
| 63.000 | 12,600,000 |
| 64.000 | 12,800,000 |
| 65.000 | 13,000,000 |
| 66.000 | 13,200,000 |
| 67.000 | 13,400,000 |
| 68.000 | 13,600,000 |
| 69.000 | 13,800,000 |
| 70.000 | 14,000,000 |
| 71.000 | 14,200,000 |
| 72.000 | 14,400,000 |
| 73.000 | 14,600,000 |
| 74.000 | 14,800,000 |
| 75.000 | 15,000,000 |
| 76.000 | 15,200,000 |
| 77.000 | 15,400,000 |
| 78.000 | 15,600,000 |
| 79.000 | 15,800,000 |
Carats to Micrograms Conversion
Converting Carats (ct) to Micrograms (µg) is a common weight conversion. 1 ct equals 200,000 µg. For example, 100 ct is equal to 20,000,000 µg.
Quick Mental Math: Carats to Micrograms
Multiply by approximately 200000 to convert carats to micrograms.
Why is converting Carats to Micrograms tricky?
The large non-round factor is difficult to estimate mentally.
Quick Reference Values
1 ct = 200,000 µg. 5 ct = 1,000,000 µg. 10 ct = 2,000,000 µg. 25 ct = 5,000,000 µg. 50 ct = 10,000,000 µg. 100 ct = 20,000,000 µg.
What is Carats?
Carats (ct) is a unit of weight. A carat is a unit of mass equal to 200 milligrams (0.2 grams), used primarily for gemstones and pearls. It is internationally recognized and standardized by the International Bureau of Weights and Measures (BIPM) for trade and gemology. One carat equals exactly 0.2 grams according to ISO standards [bipm-si-brochure]. The carat originated from the carob seed, historically used as a reference mass. It was standardized in 1907 by the International Committee of Weights and Measures at 200 mg to ensure uniformity in gemstone trade and valuation [bipm-si-brochure]. Carats are globally used in the jewelry industry to weigh diamonds, sapphires, and other gemstones. Countries including the US, UK, Canada, and most of Europe rely on the carat for gemstone mass measurement, aligned with ISO and BIPM standards [bipm-si-brochure].
What is Micrograms?
Micrograms (µg) is a unit of weight. A microgram is one millionth of a gram, or 10⁻⁶ grams, used to measure extremely small masses. This unit is precise for pharmaceuticals, environmental science, and chemistry applications requiring micro-scale mass quantification. It conforms to the SI prefix micro- indicating 10⁻⁶ [bipm-si-brochure]. The microgram unit originated with the formal adoption of SI prefixes by the CGPM in the 20th century to express very small masses conveniently. It standardized scientific and medical measurements worldwide [cgpm-resolutions]. Micrograms are universally used in pharmacology for drug dosages, in nutrition labels to indicate vitamin contents, and in environmental monitoring for pollutant levels. Regulatory agencies in the US, EU, and elsewhere reference the µg unit [nist-sp-811].
Common Misspellings
People often search for this conversion using these alternate spellings: carat, karat, carrots, carret, micro gram, microgramme, micogram, microgrm. All of these refer to the Carats to Micrograms conversion.