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Convert Calc

Ounces (oz) to Carats (ct) Converter

Enter a value to instantly convert between weight units.

Precision4 dp

1 Ounce = 141.7476 Carat

Key Formulas

Kilogram → Pound

lb = kg × 2.20462

Pound → Kilogram

kg = lb × 0.453592

Gram → Ounce

oz = g × 0.035274

Ounce → Gram

g = oz × 28.3495

Formula

ct = oz × 141.7476

One 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