Ring Weight Calculator — Gold, Silver, Platinum
Ring Weight Calculator: estimate metal weight from ring size, band width, thickness, and metal type.
Gold, silver, platinum, palladium, titanium.
How ring weight is calculated:
A ring is essentially a hollow cylinder. Its weight depends on the ring’s dimensions (inner diameter, width, thickness) and the density of the metal.
The formula:
Volume = π × Width × Thickness × (Inner Diameter + Thickness)
Weight (grams) = Volume (cm³) × Metal density (g/cm³)
This formula models a simple band ring. Wider and thicker bands use significantly more metal — and the relationship is not linear. Doubling the width more than doubles the weight because the ring’s cross-section grows in two dimensions.
Metal densities (g/cm³):
| Metal | Density | Relative Cost |
|---|---|---|
| Sterling silver | 10.36 | $ |
| 10K yellow gold | 11.57 | $$ |
| 14K yellow gold | 13.07 | $$$ |
| 18K yellow gold | 15.58 | $$$$ |
| 24K pure gold | 19.32 | $$$$$ |
| Palladium | 12.02 | $$$ |
| Platinum | 21.45 | $$$$$ |
| Titanium | 4.51 | $ |
| Tungsten carbide | 15.63 | $ |
Worked example:
US size 7 ring (inner diameter 17.35 mm = 1.735 cm), 6 mm wide, 1.5 mm thick, 14K gold:
- Volume = 3.14159 × 0.6 × 0.15 × (1.735 + 0.15) = 0.531 cm³
- Weight = 0.531 × 13.07 = 6.94 grams of 14K gold
Ring size to inner diameter (US sizes):
- Size 5: 15.70 mm
- Size 6: 16.51 mm
- Size 7: 17.35 mm
- Size 8: 18.19 mm
- Size 9: 18.89 mm
- Size 10: 19.84 mm
Cost estimation tip: Multiply weight by the current per-gram price of your metal. For 14K gold, the metal value is 58.3% of pure gold price per gram (14/24 = 0.583).
How we build and check this calculator
This calculator runs entirely in your browser, so the numbers you enter stay on your device. The math behind it is written by hand and tested against worked examples and standard references before the page goes live.
SuperGlobalCalculator is independently built and maintained. See how we build and verify our calculators.