Carats (ct) to Micrograms (μg) Converter
Enter a value to instantly convert between weight units.
1 Carat = 200000 Microgram
Key Formulas
Kilogram → Pound
lb = kg × 2.20462Pound → Kilogram
kg = lb × 0.453592Gram → Ounce
oz = g × 0.035274Ounce → Gram
g = oz × 28.3495Formula
μg = ct × 200000One carat equals exactly 200,000 micrograms — a consequence of the carat being 0.2 grams and each gram being a million micrograms. Jewelers and gemologists convert between carats and micrograms when working with very small gemstones, precision jewelry components, or laboratory-grade measurements.
Source: NIST SP 811, Table B.8
Frequently Asked Questions
Real-World Examples
A jeweler setting a 1-carat center stone knows it weighs 200,000 μg — useful for precision work.
1 ct = 200000 μg
A jewelry manufacturer ordering 5 carats of small accent stones receives 1,000,000 μg of material.
5 ct = 1000000 μg
A customer asking about a half-carat diamond learns it weighs 100,000 μg — about the weight of a drop of water.
0.5 ct = 100000 μg
A diamond grading report listing 10 carats total weight converts to 2,000,000 μg for the certificate.
10 ct = 2000000 μg