Jewelry Metal Weight convertion

In jewelry design and production, we’ve noticed that many clients and industry peers often struggle with metal weight conversions and density-to-price ratios, frequently requiring multiple sources for reference.

To simplify this process for everyone—and for ourselves—we’ve created this one-stop tool page. Here, you can quickly convert weights between wax models and metals, view real-time metal reference prices and densities, and streamline your workflow.

Jewelry Metal Weight Converter

Weight Unit Conversion

Grams (g)

Troy Ounces (oz t)

Carat (ct)

Metal Weight Conversion

From (Original Metal)

Original Weight (g)

To (Target Metal)

Estimated Target Weight

-- g

WAX TO METAL CONVERSION FACTORS FOR JEWELRY CASTING

Formula: Metal Weight = Wax Weight × Conversion Factor

Metal	Wax Factor	Metal	Wax Factor
Cobre	8.34	Oro blanco de 14 quilates	12.61
Nickel Silver	8.69	14K Yellow Gold	13.05
925 Silver	9.97	18K White Gold	14.51
Pure Silver	10.20	18K Yellow Gold	15.15
Palladium Silver	10.32	18K Red Gold	15.30
8K Gold	10.70	Oro de 22 quilates	17.63
9K Gold	11.01	PT900 Platinum	18.57
Oro de 10 quilates	11.34	Oro de 24 quilates	19.00
304 Stainless Steel	12.96	PT950 Platinum	21.00
Paladio	14.32

Calculation Formula: Target Weight = Original Weight × (Target Wax Factor ÷ Original Wax Factor)
All conversion factors are derived from your complete Excel matrix for accurate casting calculations.

📊 Metal Density Reference Table

The densities below are theoretical approximations derived from this tool's conversion factors (assuming wax density is 1 g/cm³) and are specific to the calculations on this page.

Metal Name	Metal Color	Densidad (g/cm³)
Cobre	Cu	8.96
Nickel Silver	NS	8.50
Plata de ley 925	925	10.36
Fine Silver	Ag	10.49
Palladium Silver	PdAg	10.70
8K Gold	8K	10.85
9K Gold	9K	11.20
Oro de 10 quilates	10K	11.55
Oro blanco de 14 quilates	14KW	12.75
18K White Gold	18KW	14.80
PT900 Platinum	PT900	19.90
PT950 Platinum	PT950	20.15
14K Yellow Gold	14KY	13.05
18K Yellow Gold	18KY	15.45
Oro de 22 quilates	22K	17.75
24K Pure Gold	24K	19.32
14K Rose Gold	14KR	13.10
18K Rose Gold	18KR	15.15
304 Stainless Steel	304	7.93
Paladio	Pd	12.02

Nota: Density values are approximate. Color representations are approximations of typical metal appearances.

📊 Jewelry Metal Weight Conversion & Specific Gravity Comparison

Formula: Target Weight = Source Weight × Ratio

Metal Name	Cobre	Ni-Silver	925 Silver	Fine Silver	Pd-Silver	8K Gold	9K Gold	Oro de 10 quilates	14K White	14K Yellow	18K White	18K Yellow	18K Red	Oro de 22 quilates	PT900	Oro de 24 quilates	PT950	304 Steel	Paladio
Cera1g =	8.34	8.69	9.97	10.20	10.32	10.70	11.01	11.34	12.61	13.05	14.51	15.15	15.30	17.63	18.57	19.00	21.00	12.96	14.32
Cobre1g =	1.00	0.96	0.84	0.82	0.81	0.78	0.76	0.74	0.66	0.64	0.57	0.57	0.53	0.47	0.45	0.44	0.41	1.09	0.75
Ni-Silver1g =	1.04	1.00	0.85	0.85	0.84	0.81	0.79	0.77	0.69	0.67	0.60	0.60	0.58	0.49	0.47	0.46	0.43	1.11	0.71
925 Silver1g =	1.20	1.15	1.00	0.98	0.97	0.93	0.91	0.88	0.79	0.77	0.69	0.69	0.66	0.57	0.54	0.52	0.50	1.30	0.86
Fine Silver1g =	1.22	1.17	1.02	1.00	0.99	0.95	0.93	0.90	0.81	0.78	0.70	0.70	0.68	0.50	0.55	0.54	0.51	1.33	0.87
Pd-Silver1g =	1.24	1.19	1.04	1.04	1.00	0.96	0.94	0.91	0.82	0.79	0.71	0.71	0.63	0.59	0.56	0.54	0.51	1.35	0.89
8K Gold1g =	1.28	1.23	1.07	1.05	1.04	1.00	0.97	0.94	0.85	0.82	0.74	0.74	0.71	0.61	0.57	0.56	0.53	1.39	0.90
9K Gold1g =	1.32	1.27	1.10	1.08	1.07	1.03	1.00	0.94	0.87	0.85	0.76	0.76	0.73	0.62	0.59	0.58	0.55	1.43	0.93
Oro de 10 quilates1g =	1.36	1.30	1.14	1.11	1.10	1.05	1.03	1.00	0.90	0.87	0.78	0.78	0.75	0.64	0.61	0.60	0.56	1.48	0.96
14K White1g =	1.51	1.45	1.26	1.24	1.22	1.18	1.15	1.11	1.00	0.97	0.87	0.87	0.84	0.72	0.68	0.66	0.63	1.64	1.06
14K Yellow1g =	1.56	1.50	1.30	1.27	1.26	1.21	1.18	1.15	1.03	1.00	0.90	0.90	0.86	0.72	0.70	0.68	0.65	1.69	1.09
18K White1g =	1.74	1.67	1.46	1.42	1.41	1.36	1.32	1.20	1.15	1.12	1.00	0.98	0.98	0.82	0.76	0.74	0.72	1.90	1.23
18K Yellow1g =	1.81	1.74	1.51	1.48	1.46	1.41	1.37	1.33	1.20	1.16	4.04	1.00	1.01	0.86	0.81	0.79	0.72	1.96	1.29
18K Red1g =	1.83	1.76	1.53	1.50	1.48	1.43	1.39	1.35	1.21	1.18	4.05	4.05	1.00	0.87	0.82	0.81	0.75	1.99	1.66
Oro de 22 quilates1g =	2.11	2.03	1.77	1.73	1.71	1.65	1.60	1.55	1.40	1.36	1.22	1.22	1.17	1.00	0.95	0.92	0.88	2.30	1.48
PT9001g =	2.23	2.14	1.86	1.82	1.80	1.74	1.69	1.64	1.47	1.43	1.28	1.28	1.23	1.05	1.00	0.98	0.92	2.42	1.68
Oro de 24 quilates1g =	2.20	2.19	1.91	1.86	1.84	1.78	1.73	1.68	1.51	1.46	1.31	1.31	1.26	1.08	1.02	1.00	0.94	2.48	1.61
PT9501g =	2.42	2.32	2.02	1.98	1.95	1.88	1.83	1.78	1.60	1.55	1.39	1.39	1.33	1.14	1.09	1.06	1.00	2.63	1.68
304 Steel1g =	0.91	0.87	0.76	0.74	0.74	0.71	0.69	0.67	0.60	0.59	0.52	0.52	0.50	0.43	0.41	0.40	0.38	1.00	0.66
Paladio1g =	1.34	1.41	1.16	1.15	1.12	1.11	1.07	1.04	0.94	0.92	0.81	0.78	0.60	0.68	0.60	0.62	0.60	1.52	1.00

📊 Metal Composition Table

Metal Name	Composición	Standard / Variant
Oro blanco de 14 quilates	58.3% fine gold 23% copper 11% nickel 7.7% zinc	Normal Alloy
18K White Gold	75% fine gold 10% copper 8% nickel 4.5% zinc 2.5% silver	Normal Alloy
14K Yellow Gold	58.5% fine gold 29% copper 12.5% fine silver	Standard
18K Yellow Gold	75% fine gold 15% copper 10% fine silver	Standard
14K Rose Gold	58% gold 32% copper 10% silver	Standard
18K Rose Gold	75% gold 22.25% copper 2.75% silver	Standard
14K White Gold (Pd)	58.33% pure gold (Au) 32.17% silver (Ag) 9.50% palladium (Pd)	Palladium Alloy
18K White Gold (Pd)	75% pure gold (Au) 25% palladium / platinum	High Grade
24K Pure Gold	99.9% Gold	Pure Metal
PT950 Platinum	95% Platinum 5% Iridium/Ruthenium	Premium
925 Silver	92.5% Silver 7.5% Copper	Plata de ley

Karat Gold Price Calculator

Enter 24K price per ounce to calculate gram prices

Enter 24K Pure Gold Price (Per Ounce)

Formula: (24K Ounce Price ÷ 31.10) × (K/24)
* 1 troy ounce ≈ 31.1035 grams

Karat Gold Price

Unit: Per Gram (USD)

Enter ounce price to calculate...

🔗 Real-Time Metal Price Reference Links

Metal prices fluctuate in real-time. To help you access the most accurate market data, we recommend the following authoritative financial and commodity data websites for your queries:

💎 Precious & Base Metals (Comprehensive)

Kitco Markets – A leading global precious metals website providing real-time charts and news for gold, silver, platinum, and palladium.
Investing.com Commodities – A comprehensive financial portal for futures prices of gold, silver, copper, aluminum, nickel, steel, and more.

🏭 Industrial Metals & Stainless Steel Raw Materials

London Metal Exchange (LME) – The global benchmark for industrial metal pricing. Check official prices for copper, aluminum, zinc, lead, nickel, and tin.
TradingEconomics – Stainless Steel – Provides global stainless steel scrap price trends and related raw material (nickel, chromium) prices.

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