Diamond Carat to mm Calculator — 公式
## Diamond Carat to Millimeter Conversion
Diamond size (diameter) relates to carat weight through the cube root, since volume increases with the cube of the diameter.
### Formula (Round Brilliant)
**Diameter (mm) = 6.5 x Carat^(1/3)**
One carat equals 200 milligrams (0.2 grams). A 1-carat round diamond is approximately 6.5 mm in diameter. Doubling the carat weight only increases diameter by about 26% (cube root of 2).
Diamond size (diameter) relates to carat weight through the cube root, since volume increases with the cube of the diameter.
### Formula (Round Brilliant)
**Diameter (mm) = 6.5 x Carat^(1/3)**
One carat equals 200 milligrams (0.2 grams). A 1-carat round diamond is approximately 6.5 mm in diameter. Doubling the carat weight only increases diameter by about 26% (cube root of 2).
计算示例
A 1.0 carat round brilliant diamond.
- Diameter = 6.5 x 1.0^(1/3) = 6.5 x 1.0 = 6.5 mm
- Weight = 1.0 x 200 = 200 mg
- Weight = 1.0 x 0.2 = 0.2 grams