18K Gold Calculator

Calculate the precise value of 18K gold (75% pure / 750 fineness) based on current market prices. Whether you're evaluating fine jewelry, engagement rings, wedding bands, or luxury watches, our calculator provides accurate real-time valuations for the most popular gold purity in fine jewelry worldwide.

18K Gold Value Calculator

Enter your 18 karat gold's weight to calculate its current market value. Pre-set to 75% purity (750 fineness) - the European fine jewelry standard.

Select purity
Enter weight
Estimated melt value
$0.00
Weight conversions
Important: This reflects the melt value at today's price. Cash offers from jewelers or pawn shops are commonly lower (often 10–30% or more) due to refining and business costs. Actual amounts vary.

Understanding 18K Gold

Everything you need to know about 18 karat gold - the perfect balance of purity, beauty, and durability for fine jewelry.

What Makes 18K Gold Special

18K gold is the global standard for fine jewelry, offering the ideal balance of purity and practicality:

  • 75% Pure Gold (750 Fineness): 18 parts gold, 6 parts alloy metals
  • Fine Jewelry Standard: Preferred in Europe, considered luxury quality worldwide
  • Rich Color: Warm golden tone close to pure gold, more vibrant than 14K
  • Durable Enough: Strong enough for daily wear in rings and bracelets
  • Hypoallergenic: Higher gold content = less alloy = fewer skin reactions
  • Investment Quality: Retains 75% of gold's intrinsic value
  • Resale Value: Better than 14K or 10K when selling as scrap

18K vs Other Gold Purities

How 18K gold compares to other common purities:

  • 24K (999): 99.9% pure - Too soft for jewelry, investment only
  • 22K (916): 91.6% pure - Popular in Asia, still quite soft
  • 18K (750): 75.0% pure - Sweet spot: luxury + durability
  • 14K (585): 58.5% pure - More durable, paler color, US standard
  • 10K (417): 41.7% pure - Very durable, least valuable

Price Comparison: At $2,400/oz spot, 1 gram = 24K: $77, 18K: $58, 14K: $45, 10K: $32. Best For: 18K is ideal for engagement rings, luxury watches, heirloom jewelry, and pieces you'll wear regularly but want to retain value.

18K Gold Colors

18K gold comes in three main colors, all with 75% gold content:

  • Yellow Gold: Classic warm golden color. Alloy: copper + silver. Most traditional, least maintenance.
  • White Gold: Silvery-white appearance. Alloy: palladium/platinum/nickel + silver. Rhodium-plated (requires re-plating every 1-2 years).
  • Rose Gold: Romantic pink-red hue. Alloy: copper (higher %) + silver. Trending, vintage appeal, durable.

Value: Same melt value for all three. White gold costs more new due to rhodium plating labor. Durability: Rose gold is slightly harder due to copper. White gold's rhodium wears off but protects underneath.

Buying & Selling 18K Gold

Important factors when transacting in 18K gold jewelry:

  • Retail Markup: New jewelry costs 2-4× melt value due to craftsmanship, design, brand
  • Selling Payouts: Expect 85-95% of melt value from reputable dealers; avoid "cash for gold" shops (60-75%)
  • Verification: Always verify purity with XRF testing before large purchases
  • Hallmarks: Look for "18K", "750", or "0.750" stamps
  • Designer Premium: Cartier, Tiffany, Van Cleef pieces sell above melt value
  • Gemstone Value: Diamonds/gems add value beyond gold content

Current 18K Gold Prices by Weight

Live 18K gold prices across different weight units. Calculated as 75% of gold spot price (pure 24K/.999 fine gold) since 18K contains 75% gold and 25% other metals.

Per Gram
$0.00
Standard metric unit
Per Troy Ounce
$0.00
31.1035 grams
Per Kilogram
$0.00
1,000 grams
Per Tola
$0.00
11.66 grams (South Asian)

Frequently Asked Questions About Gold

Find answers to common questions about gold pricing, purity, and valuation.

How is gold purity measured?

Gold purity is measured using two systems: karats (K) and fineness.

  • Karats: Based on 24 parts total. 24K gold is pure (100%), while 18K gold is 18/24 = 75% pure
  • Fineness: Parts per thousand. 999 fineness = 99.9% pure gold

Common stamps you'll find on gold jewelry include "14K", "585" (14K fineness), "18K", "750" (18K fineness), etc.

What should I do before selling my gold?

Follow these steps to maximize your return when selling gold:

  • Verify purity: Look for karat stamps (10K, 14K, 18K, 24K) and test if unsure
  • Weigh accurately: Use a precise scale (0.01g accuracy recommended)
  • Calculate melt value: Use our calculator to know the baseline value
  • Get multiple quotes: Contact 3-5 buyers to compare offers
  • Separate by purity: Don't mix different karats together
  • Know the market: Check current spot price before negotiating

Reputable dealers typically offer 75-95% of melt value for scrap gold.