Gold Value Calculator – Calculate Gold Worth by Weight & Karat
Calculate gold value based on weight, karat, and market price
Table of Contents
How to Use
- Enter the weight of your gold item
- Select the weight unit (grams, ounces, or kilograms)
- Choose the gold purity (24k, 22k, 18k, 14k, or 10k)
- Input the current gold price per troy ounce
- Click calculate to see the total value of your gold
Understanding Gold Purity and Karats
Gold purity is measured in karats (k), with 24 karat being the purest form. Each karat represents 1/24th of the total weight being pure gold.
- 24k Gold: 99.9% pure gold - Used in bullion, coins, and high-end jewelry
- 22k Gold: 91.67% pure gold - Common in Asian and Middle Eastern jewelry
- 18k Gold: 75% pure gold - Popular for fine jewelry, good balance of durability and value
- 14k Gold: 58.33% pure gold - Most common in US jewelry, very durable
- 10k Gold: 41.67% pure gold - Most durable, affordable option for everyday wear
Factors Affecting Gold Value
The value of gold items depends on several factors:
- Weight: Measured in grams, troy ounces, or kilograms
- Purity: Higher karat means more pure gold and higher value
- Current Market Price: Gold prices fluctuate daily based on global markets
- Craftsmanship: Antique or designer pieces may have value beyond gold content
- Condition: Well-maintained items may fetch higher prices
- Form: Bullion, coins, jewelry, or scrap gold are valued differently
How Gold is Priced
Gold is priced per troy ounce (31.1 grams) on international markets. The spot price represents the current market value for immediate delivery.
To calculate gold value: (Weight in grams × Purity percentage) × Price per gram = Total Value
For example, 10 grams of 18k gold at $2,000 per troy ounce: (10 × 0.75) × ($2,000 ÷ 31.1) = 7.5 × $64.31 = $482.33
Tips for Selling Gold
- Check current gold prices before selling
- Get multiple quotes from different buyers
- Verify gold purity with a professional assessment
- Consider selling to reputable dealers or refiners
- Understand that buyers typically offer 70-80% of spot price
- Keep detailed records of transactions for tax purposes
- Be aware of scams - legitimate buyers won't pressure you
- Consider the sentimental value before selling heirlooms
Frequently Asked Questions
- How is gold purity measured?
- Gold purity is measured in karats (k), where 24k represents pure gold (99.9%). Each karat equals 1/24th of the total, so 18k gold is 18/24 or 75% pure gold. Lower karat gold contains other metals like copper or silver for durability.
- What's the difference between a troy ounce and a regular ounce?
- A troy ounce weighs 31.1 grams and is used for precious metals, while a regular (avoirdupois) ounce weighs 28.35 grams. Gold prices are always quoted in troy ounces, which are about 10% heavier than regular ounces.
- Where can I find the current gold price?
- Current gold prices are available from financial websites like Kitco.com, BullionVault, or major financial news sites. Prices update in real-time during trading hours and are quoted per troy ounce in various currencies.
- Why do buyers offer less than the spot price?
- Gold buyers typically offer 70-80% of spot price because they need to cover refining costs, business expenses, and profit margin. The exact percentage depends on the item's form (scrap, jewelry, or coins), purity, and current market conditions.