Scrap Gold Calculator
Calculate the value of your scrap gold based on weight, purity, and market price
Calculate Your Scrap Gold Value
Gold Weight
Use a digital scale for accurate measurements. Troy ounces are commonly used for precious metals.
Gold Purity
24K is pure gold. 75.0% pure gold
Common Karat Values:
Market Price
Check current gold prices from reliable sources like financial websites or local dealers.
Gold Value Results
Total Weight: 120 grams (120.00 g)
Karat Rating: 18.0K
Market Price: $65.00 per gram
Calculation: 90.00g × $65.00/g
Value Breakdown
Example: Mixed Gold Jewelry Collection
Scenario: Old Jewelry Box
Batch 1: 18K gold jewelry - 120 grams
Batch 2: 9K gold jewelry - 350 grams
Gold Price: $65 per gram (current market)
Calculation Results
18K batch (75% pure): 120g × 75% = 90g pure gold
9K batch (37.5% pure): 350g × 37.5% = 131.25g pure gold
Total pure gold: 90g + 131.25g = 221.25g
Total value: 221.25g × $65/g = $14,381.25
Gold Karat Reference
Weight Conversions
Gold Selling Tips
Get multiple quotes from different dealers
Check current market prices before selling
Verify gold purity with acid test or XRF
Separate different karat pieces
Consider refining fees and dealer margins
Understanding Gold Purity and Valuation
Gold Purity Basics
Gold purity is measured in karats (K) or percentage. Pure gold is 24K (99.9% pure), but most jewelry contains alloys for durability. The karat system divides gold into 24 parts, so 18K gold contains 18 parts gold and 6 parts other metals.
Common Alloys
- •Copper: Adds strength and reddish color
- •Silver: Lightens color and increases malleability
- •Nickel/Zinc: Creates white gold appearance
Scrap Gold Value Formula
Value = Weight × Purity × Price per Unit
- Weight: Total weight of gold item
- Purity: Percentage of pure gold (karat ÷ 24)
- Price: Current market price per weight unit
Note: Dealers typically pay 70-80% of calculated melt value to cover their costs and profit margins.