Ounces (oz) to Carats (ct) Converter
Enter a value to instantly convert between weight units.
1 Ounce = 141.7476 Carat
Key Formulas
Kilogram → Pound
lb = kg × 2.20462Pound → Kilogram
kg = lb × 0.453592Gram → Ounce
oz = g × 0.035274Ounce → Gram
g = oz × 28.3495Formula
ct = oz × 141.7476One ounce is 28.35 grams, and since a carat is 0.2 grams, one ounce equals about 141.75 carats. This conversion is useful in the jewelry industry when working with both metric and US customary units — some gold weights are measured in ounces while gemstones are measured in carats.
Source: NIST SP 811, Table B.8
Frequently Asked Questions
Real-World Examples
A jeweler weighing 1 oz of gold findings converts to 141.75 carats for the gemstone setting calculation.
1 oz = 141.75 ct
A jewelry manufacturer using 8 oz of gold mesh converts to 1134 carats for the production record.
8 oz = 1133.98 ct
A goldsmith measuring 0.5 oz of bezels calculates 70.87 carats for the diamond accent sizing.
0.5 oz = 70.87 ct
A jewelry importer declaring 16 oz of gold jewelry to customs converts to 2268 carats for the valuation.
16 oz = 2267.96 ct