How to Use the Calculator
- Enter the diameter of your gold ring in millimeters (mm). This is the width of the ring measured across its widest point.
- Enter the height (or thickness) of your gold ring in millimeters (mm). This is the vertical measurement of the ring.
- Select the gold purity from the dropdown menu. Common options include 18 karat (75% pure gold), 22 karat (91.67% pure gold), and 24 karat (100% pure gold).
- Click the "Calculate" button to compute the weight of the gold in your ring.
- The calculator will display the volume of gold, the weight of the gold alone, and the total weight of the ring.
Understanding the Results
The calculator uses the formula: Weight = π × (d² × h × ρ) / 4, where:
- π (Pi): A mathematical constant approximately equal to 3.14159
- d: Diameter of the ring in millimeters
- h: Height of the ring in millimeters
- ρ (rho): Density of gold, which is approximately 10.66 g/cm³
The results are displayed in cubic centimeters (cm³) for volume and grams (g) for weight. This information can help you estimate the value of your gold ring or plan for melting and refining.
Important Notes
This calculator provides an estimation based on geometric measurements and standard gold density. Actual ring weight may vary due to:
- Ring design and craftsmanship
- Presence of base metals in lower-karat gold rings
- Measurement inaccuracies
For precise valuation, it's recommended to consult with a professional jeweler or use specialized equipment.