Convert Carat (Metric) to troy ounces
Western Europe · European Weight · standardized · modern
Exact by definition The unit is fixed by statute or standard against an exactly defined anchor, so the only rounding is in the digits displayed.
Quick answer
1 Carat (Metric) = 0.00643015 troy ounces
1 Carat (Metric) = 0.00643015 troy ounces. Carat (Metric) is a traditional mass unit from Western Europe.
Convert any amount
Carat (Metric) to troy ounces table
| Carat (Metric) | troy ounces |
|---|---|
| 0.25 Carat (Metric) | 0.00160754 troy ounces |
| 0.5 Carat (Metric) | 0.00321507 troy ounces |
| 1 Carat (Metric) | 0.00643015 troy ounces |
| 2 Carat (Metric) | 0.0128603 troy ounces |
| 3 Carat (Metric) | 0.0192904 troy ounces |
| 4 Carat (Metric) | 0.0257206 troy ounces |
| 5 Carat (Metric) | 0.0321507 troy ounces |
| 10 Carat (Metric) | 0.0643015 troy ounces |
| 20 Carat (Metric) | 0.128603 troy ounces |
| 25 Carat (Metric) | 0.160754 troy ounces |
| 50 Carat (Metric) | 0.321507 troy ounces |
| 100 Carat (Metric) | 0.643015 troy ounces |
About the Carat (Metric)
International gemstone weight. 1 Carat = 0.2g exactly.
- Symbol
- ct
- Value in SI
- 1 Carat (Metric) = 0.0002 kilogram
- Typical use
- jewellery
- Source
- UnitConvertLab measurement atlas
Every atlas conversion routes through the SI kilogram. See our methodology and data provenance pages for how these values are sourced and verified.
Frequently asked
How many troy ounces are in a Carat (Metric)?
1 Carat (Metric) = 0.00643015 troy ounces. Multiply the number of Carat (Metric) by 0.0064301493 to get troy ounces.
What is Carat (Metric) used for?
International gemstone weight. 1 Carat = 0.2g exactly. It is classified as standardized and dates from the modern period.
Is the Carat (Metric) value exact?
Yes for practical purposes. UnitConvertLab converts every atlas unit through the SI kilogram, so the arithmetic itself introduces no rounding beyond the digits shown.
How reliable is this Carat (Metric) conversion?
Exact by definition — The unit is fixed by statute or standard against an exactly defined anchor, so the only rounding is in the digits displayed. Source: UnitConvertLab measurement atlas.
Cite this page
UnitConvertLab. (2026). Convert Carat (Metric) to troy ounces. UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/carat-to-troy-ounce-si
Report an incorrect value or source
Regional units vary by district and by century. If this figure, its variant list or its citation is wrong where you are, tell us — the report carries the page context automatically.