Material Weight Calculator

Material Weight Calculator

Estimate casting weight by converting between materials.

Casting Weight: 0 grams

Platinum 18K 14K 9K Sterling
Platinum 10.00 7.23 6.04 5.20 4.83
18K 13.83 10.00 8.36 7.20 6.68
14K 16.55 11.97 10.00 8.61 7.99
9K 19.22 13.90 11.61 10.00 9.28
Sterling 20.70 14.97 12.51 10.77 10.00
Platinum 18K 14K 9K Sterling
Platinum 100% -27.70% -39.60% -48.00% -51.70%
18K 38.30% 100% -16.40% -28.00% -33.20%
14K 65.50% 19.70% 100% -13.90% -20.10%
9K 92.20% 39.00% 16.10% 100% -7.20%
Sterling 107.00% 49.70% 25.10% 7.70% 100%
Gold Weight Conversion Example

Example 1:

Convert weight from 18ct Yellow to 9ct Yellow

Goal: What is the equivalent weight in 9ct Yellow for an article that weighs 50g in 18ct Yellow?

Given:
Density of 18ct Yellow = 15.51
Density of 9ct Yellow = 11.16
Known weight = 50g

Formula
(New Density / Old Density)×Known Weight

11.16
15.51
× 50
= 35.97 gms in 9K Yellow
Gold Weight Conversion Example

Example 2:

Convert weight from 9K Yellow to 18 Yellow

Goal: What is the equivalent weight in 18K Yellow for an article that weighs 50g in 9K Yellow?

Given:
Density of 9ct Yellow = 11.16
Density of 18ct Yellow = 15.51
Known weight = 50g

Formula
(New Density / Old Density)×Known Weight

15.51
11.16
× 50
= 69.49 gms in 18K Yellow
Density of Precious Metals

Understanding the Density of Precious Metals

14k Gold: A Study in Elegance and Durability

14-karat gold, denoted as 14k gold, is an alloy consisting of 58.3% pure gold and 41.7% other metals. This combination enhances the gold’s durability while maintaining its signature luster. The density of 14k gold is approximately 12.9 grams per cubic centimeter (g/cm³) or 12,900 kilograms per cubic meter (kg/m³). Whether you choose yellow, rose, or white gold, the density remains consistent, ensuring jewelry that withstands the test of time.

18k Gold: The Ultimate in Luxury and Purity

Known for its opulent allure, 18-karat gold, or 18k gold, contains a higher gold content than 14k gold. Comprising 75% pure gold and 25% other metals, this alloy exudes a rich, radiant appearance. The density of 18k gold ranges from approximately 15.5 to 16.9 g/cm³, depending on the specific alloy composition. Its higher density reflects the increased gold purity and adds to the inherent value of this sought-after metal.

Sterling Silver: A Shimmering Elegance with Timeless Appeal

Sterling silver, widely utilized in jewelry and decorative items, is composed of 92.5% silver and 7.5% other metals, typically copper. This alloy strikes a balance between silver’s beauty and copper’s strength. Sterling silver has a density of approximately 10.36 g/cm³ or 10,360 kg/m³, which contributes to its malleability and workability. Its density also aids in distinguishing it from other silver-plated or silver-colored metals.


Understanding the density of precious metals provides valuable insights into their composition, durability, and quality. By appreciating the significance of density, we can better comprehend the unique characteristics that make each of these precious metals so desirable and cherished.

Code Description Density
WaxWax1.00
24YGold19.32
22Y22ct Yellow17.86
18Y18ct Yellow15.51
18P18ct Pink15.17
18W18ct White15.64
18SA18ct Setting Alloy17.39
18GP18ct General Purpose15.90
14Y14ct Yellow12.96
14P14ct Pink13.09
14W14ct White13.87
10Y10ct Yellow11.48
10P10ct Pink11.20
10W10ct White12.84
9Y9ct Yellow11.16
9P9ct Pink11.23
9W9ct White12.55
9SA9ct Setting Alloy13.38
FSSilver10.49
SSSterling Silver10.36
PLATPlatinum21.45
PT950RU950 Platinum Ruthenium20.70
PT960960 Platinum Copper20.32
PT970970 Platinum Copper20.59
PALLPalladium12.02
PD950AG950 Palladium Silver11.80
AluminumAluminum2.70
MagnesiumMagnesium1.74
PewterPewter9.50
Brass / BronzeBrass / Bronze8.80
CopperCopper8.92
TinTin7.29
ZincZinc7.14
LeadLead11.34
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