Carats (ct)	Troy Ounces (oz t)
1 ct	0.00643 oz t
2 ct	0.01286 oz t
5 ct	0.03215 oz t
10 ct	0.0643 oz t
25 ct	0.1608 oz t
50 ct	0.3215 oz t
100 ct	0.643 oz t
250 ct	1.6075 oz t
500 ct	3.2151 oz t
1000 ct	6.4301 oz t

Convert Carats to Troy Ounces

Convert carats to troy ounces (ct to oz t) with our instant calculator. 1 ct = 0.00643 oz t. Includes exact formula and reference tables.

How to Convert Carats to Troy Ounces (ct to oz t)

1 Carat (ct) is equal to 0.00643 Troy Ounces (oz t). Multiply the carat value by 0.006430149314

Quick Answer 1 ct = 0.00643 oz t

Formula oz t = ct × 0.006430149314

Inverse Factor 1 oz t = 155.517384 ct

Unit Definitions & Metrology Context

The standard SI base unit of mass is the kilogram (kg), defined in terms of the Planck constant (h = 6.62607015 × 10⁻³⁴ J⋅s).

About Carats (ct): Carat (ct) is a unit in the Weight & Mass measurement category. It is widely used in diamonds & gemstones. Relative to the weight & mass base unit, 1 ct equals 0.0002 Kilograms (kg).

About Troy Ounces (oz t): Troy Ounce (oz t) is a unit in the Weight & Mass measurement category. It is widely used in gold, silver & bullion (31.1 g). Relative to the weight & mass base unit, 1 oz t equals 0.031103 Kilograms (kg).

Need to convert in the opposite direction? Visit our Convert Troy Ounces to Carats (oz t to ct) calculator (1 oz t = 155.517384 ct).

Step-by-Step Worked Examples (ct to oz t)

Convert 5 Carats to Troy Ounces: Applying the formula (oz t = ct × 0.006430149314): starting with 5 ct, multiply the carat value by 0.006430149314 to get 0.0322 oz t.
Convert 10 Carats to Troy Ounces: Applying the formula (oz t = ct × 0.006430149314): starting with 10 ct, multiply the carat value by 0.006430149314 to get 0.0643 oz t.
Convert 50 Carats to Troy Ounces: Applying the formula (oz t = ct × 0.006430149314): starting with 50 ct, multiply the carat value by 0.006430149314 to get 0.3215 oz t.

Popular Weight & Mass Conversions

Pound ⇄ Kilogram

1 avoirdupois pound is legally defined as exactly 0.45359237 kilograms.

Ounce ⇄ Gram

1 ounce is approximately 28.3495 grams (1/16 of a pound).

Stone ⇄ Pound

1 British stone is exactly equal to 14 pounds (approx. 6.35029 kg).

Kilogram ⇄ Gram

1 kilogram equals exactly 1,000 grams.

Frequently Asked Questions

Verified answers and formulas for converting carats to troy ounces.

How many troy ounces are in 1 carat?

There are 0.00643 troy ounces (oz t) in 1 carat (ct). Conversely, 1 troy ounce equals 155.517384 carats.

How do you convert carats to troy ounces?

To convert carats (ct) to troy ounces (oz t), use the formula: oz t = ct × 0.006430149314. Multiply the carat value by 0.006430149314. For example, 10 ct equals 0.0643 oz t.

How do I convert back from troy ounces to carats?

To convert in the reverse direction from troy ounces (oz t) to carats (ct), use the inverse formula: ct = oz t × 155.517384. Multiply the troy ounce value by 155.517384 (1 oz t = 155.517384 ct).

What is the difference between carat (ct) and troy ounce (oz t)?

Both carat and troy ounce measure weight & mass. Carat (ct) is a unit in the Weight & Mass measurement category. It is widely used in diamonds & gemstones. Relative to the weight & mass base unit, 1 ct equals 0.0002 Kilograms (kg). Troy Ounce (oz t) is a unit in the Weight & Mass measurement category. It is widely used in gold, silver & bullion (31.1 g). Relative to the weight & mass base unit, 1 oz t equals 0.031103 Kilograms (kg).

How many pounds are in 1 kilogram?

1 kilogram equals approximately 2.20462 pounds. A quick mental trick is to multiply kilograms by 2.2.