Gold by Gram
Gold Gram Calculator
Free gold gram calculator. Find the value of gold per gram at the live spot price for any karat from 10K to 24K.
Use the calculatorAbout gold by the gram
Gold is quoted by the troy ounce, but jewelry is usually weighed in grams. One troy ounce equals 31.1035 grams, so the per-gram value of pure gold is the spot price divided by 31.1035.
This calculator works in grams directly. Enter the gram weight, choose the karat, and it returns the gold value per gram and for the whole piece at the live spot price.
Worked example at an illustrative gold spot of $4,000.00 per troy ounce (use the live price above for current figures):
How to calculate gold by the gram value
- Weigh the item. Use a digital gram or pennyweight scale. Heavier, solid pieces give the most reliable estimate.
- Select the metal and purity. Pick gold, silver, or platinum, then choose the karat or fineness. Use Custom to enter an exact percentage.
- Confirm the live spot price. The calculator fills in the current spot price automatically. Edit it if you use a different quote.
- Calculate and adjust payout. Press Calculate to see the melt value, then move the payout slider to model a buying offer.
Gold Gram Calculator questions
What is the value of 1 gram of gold today?
For pure 24K gold at a $4,000 spot, one gram is worth about $128.60 ($4,000 ? 31.1035). For 14K, it is about $74.98 per gram. Use the live spot above for an exact figure.
How many grams are in a troy ounce of gold?
31.1035 grams. Note this is heavier than a standard (avoirdupois) ounce of 28.35 grams.
How do I convert gold price per ounce to per gram?
Divide the spot price per troy ounce by 31.1035. Then multiply by the karat purity for alloyed jewelry.
Is gold sold by gram or pennyweight?
Both. Jewelers in the U.S. often use pennyweight (dwt); much of the world uses grams. The calculator supports grams, dwt, and troy ounces.