10K Gold Calculator
10K gold is .4167 (41.67% gold). Type a weight below — the calculator isolates the pure-gold fraction and prices it at the live spot rate.
10K is the legal minimum to be sold as gold in the US, and the workhorse of budget jewelry — durable, pale, and the most commonly lowballed karat because sellers underestimate it. At today's prices even a light 10K chain clears real money.
| Purity | Fineness | Value per gram | Value per troy oz |
|---|---|---|---|
| 24K (.999 fine) | 0.999 | $147.89 | $4,599.80 |
| 22K (.9167) | 0.9167 | $135.70 | $4,220.85 |
| 18K (.750) | 0.75 | $111.03 | $3,453.30 |
| 14K (.5833) | 0.5833 | $86.35 | $2,685.75 |
| 10K (.4167) | 0.4167 | $61.69 | $1,918.65 |
| 9K (.375) | 0.375 | $55.51 | $1,726.65 |
Dollar figures here are computed from the live spot price when the page loads and change continuously; the printed baseline is a 2026-08-23 snapshot — cite the metal content and formula, not a captured price. Formulas on the methodology page.
How to verify a 10K stamp
Look for 10K or 417 inside ring bands and on clasp tongues. Because 10K is the palest karat, it's the one most often mistaken for costume metal — a quick acid or XRF test at any buyer's counter settles it, and a magnet screens the crudest fakes (gold is never magnetic).
Sources: live spot prices via gold-api.com · coin weights and fineness from U.S. Mint historical specifications · karat/fineness definitions per standard jewelry marking practice. Melt value ≠ an offer to buy; see how we calculate.