Jewelry Metal Weight Comparison Chart
The same design,a different weight.In every metal.
A ring cast in platinum weighs far more than the same ring in silver — because metals differ in density. This chart and calculator convert a piece's weight between platinum, gold from 24k to 9k, and silver, so you can estimate weight and material cost across metals before you produce.
Why the same ring weighs different amounts.
A jewelry design has a fixed volume — but every metal has a different density, so that same volume weighs a different number of grams depending on what it's cast in. Platinum is the densest of the common jewelry metals; silver is among the lightest.
That matters because precious metal is sold by weight. Two identical rings can carry very different material costs simply because one is platinum and the other 14k gold. If you know a piece's weight in one metal — say, from a silver sample — this chart lets you estimate it in any other.
"Same design, same volume — but platinum weighs more than twice what sterling silver does."
One simple rule.
Locate the metal you already know the weight in along the left-hand column of the chart.
Follow that row across to the column for the metal you want to convert to. That cell is your factor.
Multiply your known weight by that factor. That's the estimated weight in the new metal — or just use the calculator below.
Convert a weight in seconds.
Enter a known weight, pick the two metals, and we'll do the maths from the chart below.
Figures are estimates for typical alloys; exact density varies slightly with gold color and alloy mix.
Metal weight comparison chart.
Find your known metal on the left, read across to the target metal, and multiply. The highlighted diagonal is each metal against itself (×1.00).
| From ↓ / To → | Pt. | F.G. | 22kt | 18kt | 14kt | 10kt | 9kt | F.S. | Stg |
|---|---|---|---|---|---|---|---|---|---|
| Pt. | 1.00 | 0.90 | 0.82 | 0.70 | 0.60 | 0.53 | 0.53 | 0.49 | 0.48 |
| F.G. | 1.11 | 1.00 | 0.91 | 0.78 | 0.67 | 0.59 | 0.58 | 0.54 | 0.54 |
| 22kt | 1.22 | 1.10 | 1.00 | 0.86 | 0.73 | 0.65 | 0.65 | 0.60 | 0.59 |
| 18kt | 1.42 | 1.28 | 1.16 | 1.00 | 0.85 | 0.76 | 0.75 | 0.69 | 0.68 |
| 14kt | 1.66 | 1.50 | 1.36 | 1.17 | 1.00 | 0.89 | 0.88 | 0.81 | 0.80 |
| 10kt | 1.88 | 1.69 | 1.54 | 1.32 | 1.13 | 1.00 | 0.99 | 0.92 | 0.90 |
| 9kt | 1.90 | 1.71 | 1.56 | 1.34 | 1.14 | 1.01 | 1.00 | 0.93 | 0.92 |
| F.S. | 2.04 | 1.84 | 1.68 | 1.44 | 1.23 | 1.09 | 1.08 | 1.00 | 0.99 |
| Stg | 2.07 | 1.87 | 1.70 | 1.46 | 1.25 | 1.11 | 1.09 | 1.01 | 1.00 |
From sample to quote.
For brands and designers, this is the quickest way to estimate metal weight — and therefore material cost — when moving a design between platinum, gold, and silver, or when quoting the same style across a metal range. Cast one sample, and you can price the whole collection.
Weight conversion, answered.
The questions we hear most about converting jewelry weight between metals.
Ask About ManufacturingAny metal, made in-house.
We produce across platinum, gold (9k–24k), silver, and genuine gold vermeil — OEM, ODM, and private label, under strict NDA. Send us your design and we'll quote the weight and cost.