Convert 1 oz to ct
1 ounce = 141.747616 carats
Sumwise · Maintained by Theo Abbott (pen name) · automated checks · Data: exact arithmetic; unit definitions from NIST SP 811 · Updated · How the checks work
How to convert ounces to carats
- Formula:
carats = ounces × 141.747616 - Put in the value: 1 ounce.
- Result: 141.747616 carats.
Ounces to carats table
| ounces | carats |
|---|---|
| 1 oz | 141.747616 ct |
| 2 oz | 283.495231 ct |
| 5 oz | 708.738078 ct |
| 10 oz | 1,417.48 ct |
| 20 oz | 2,834.95 ct |
| 50 oz | 7,087.38 ct |
| 100 oz | 14,174.76 ct |
| 500 oz | 70,873.81 ct |
| 1,000 oz | 141,747.62 ct |
Converting the other way: carats to ounces
ounces = carats × 0.00705479. So 141.747616 carats is back to 1 ounce; one carat is 0.00705479 ounces. See the carats to ounces table.
Quick estimate in your head
For a rough answer, multiply by about 100: 1 × 100 ≈ 100 ct, against the exact 141.747616 ct (29.5% out). Good enough to check that a calculated result is sensible.
Common mistakes
The usual slip is using the factor the wrong way round. A ounce is bigger than a carat, so the number of carats must come out larger than the number of ounces. If your answer goes the other way, divide instead of multiplying.
About the units
Ounce (oz) and carat (ct) are both units of mass. One ounce equals 141.747616 carats, and one carat equals 0.00705479 ounces. Results on this page are rounded for display; the conversion itself uses the exact definitions.
Mass conversions come up in cooking and baking, shipping and luggage limits, body weight, medicine doses and buying food by weight.
1 ounce in other units
The most readable unit for this amount is ounces (1).
- 28,349.52 mg
- 28.349523 g
- 0.02834952 kg
- 0.00002835 t
- 0.0625 lb
- 0.00446429 st
- 0.00003125 ton
- 141.747616 ct
How answers are calculated and checked: methodology.
Questions
How many carats are in 1 ounce?
141.747616 carats.
What is the formula to convert ounces to carats?
carats = ounces × 141.747616
How many carats are in one ounce?
One ounce is 141.747616 carats, so multiply any number of ounces by 141.747616.
Is 1 oz more than 1 ct?
Yes. 1 ounce is 141.747616 carats, which is more than 1 carat.
How do I convert ounces to carats in a spreadsheet?
Put the number of ounces in A1 and type =A1*141.747616 in the next cell. Fill the formula down to convert a whole column.