Convert ounces to carats
1 oz = 141.75 ct. Change the amount below, or read the formula and the reference table further down.
1 ounce equals
carats
1 oz = 141.75 ct
The formula
Ounces and carats both measure weight & mass from the same zero, so a single multiplier does the job.
ct = oz × 141.75
Going the other way? Convert carats to ounces.
Ounces to carats table
Common values, rounded for reading.
| Ounces (oz) | Carats (ct) |
|---|---|
| 1 | 141.75 |
| 2 | 283.5 |
| 3 | 425.24 |
| 4 | 566.99 |
| 5 | 708.74 |
| 6 | 850.49 |
| 7 | 992.23 |
| 8 | 1,133.98 |
| 9 | 1,275.73 |
| 10 | 1,417.48 |
| 15 | 2,126.21 |
| 20 | 2,834.95 |
| 25 | 3,543.69 |
| 30 | 4,252.43 |
| 40 | 5,669.9 |
| 50 | 7,087.38 |
| 75 | 10,631.07 |
| 100 | 14,174.76 |
| 250 | 35,436.9 |
| 500 | 70,873.81 |
| 1,000 | 141,747.62 |
Questions people ask
- How many carats are in a ounce?
- One ounce equals 141.75 carats.
- How do I convert ounces to carats by hand?
- Multiply the number of ounces by 141.75. For a rough check, 141.75 is close enough for most everyday use.
- What is 1 ounce in carats?
- 1 ounce is 141.75 carats.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.