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

メタル	Wax Factor	メタル	Wax Factor
銅	8.34	14Kホワイトゴールド	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	22Kゴールド	17.63
9K Gold	11.01	PT900 Platinum	18.57
10Kゴールド	11.34	24Kゴールド	19.00
304 Stainless Steel	12.96	PT950 Platinum	21.00
パラジウム	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	密度 (g/cm³)
銅	銅	8.96
Nickel Silver	NS	8.50
スターリングシルバー925	925	10.36
Fine Silver	アグ	10.49
Palladium Silver	PdAg	10.70
8K Gold	8K	10.85
9K Gold	9K	11.20
10Kゴールド	10K	11.55
14Kホワイトゴールド	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
22Kゴールド	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
パラジウム	博士号	12.02

注： 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	銅	Ni-Silver	925 Silver	Fine Silver	Pd-Silver	8K Gold	9K Gold	10Kゴールド	14K White	14K Yellow	18K White	18K Yellow	18K Red	22Kゴールド	PT900	24Kゴールド	PT950	304 Steel	パラジウム
ワックス1g =	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
銅1g =	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
10Kゴールド1g =	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
22Kゴールド1g =	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
24Kゴールド1g =	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
パラジウム1g =	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	構成	Standard / Variant
14Kホワイトゴールド	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	スターリングシルバー

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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