Free Platinum Value Calculator
Calculate platinum value from item weight, quantity, purity and a current platinum price you enter. Convert common precious-metal units, estimate fine platinum content and model a dealer payout after fixed fees.
Platinum Price by Weight and Purity
Enter an allowed current platinum price, its weight unit and price-purity basis. The tool values 950, 900, 850, bullion and custom-assay platinum without claiming a live market rate.
The estimate uses your entered weight, purity, price and deductions.
No live platinum price, exchange rate, assay, gemstone value, collectible premium, tax or guaranteed dealer offer is supplied. Use net platinum-alloy weight and a price you are permitted to use.
Reviewed on 16 July 2026 using FTC platinum-marking guidance, LBMA platinum benchmark information and NIST 2026 weight-conversion and precious-metal valuation guidance.
Platinum value depends on net platinum-alloy weight, actual platinum purity and a suitable price for the same currency, date and unit basis. This calculator separates item purity from the entered price's purity basis, so a 950 platinum item can be valued from a fine-platinum spot-price basis or a direct 950 alloy-item rate.
How to Calculate Platinum Value
The calculator first converts weight and price units through grams. When the entered price represents a less-than-100% alloy product, it normalizes that quote to a pure-platinum rate before applying the item's purity.
How to Use the Platinum Calculator
- Enter the net weight of one platinum-bearing item and select its unit.
- Enter the number of identical items.
- Select the verified platinum fineness or enter a custom assay percentage.
- Enter a current platinum price and its exact weight unit.
- Choose the purity basis that the entered price actually represents.
- Select one currency code; the calculator does not convert exchange rates.
- Keep payout at 100% for intrinsic value, or enter a buyer's stated percentage and fixed fee.
Platinum Purity and Fineness Chart
| Mark or fineness | Platinum purity | Calculator treatment |
|---|---|---|
| 999.9 | 99.99% | High-purity platinum preset |
| 999.5 | 99.95% | High-purity bullion preset |
| 999 | 99.9% | Fine platinum preset |
| 950 Pt or 950 Plat. | 95% | Common platinum-jewelry fineness preset |
| 900 Pt or 900 Plat. | 90% | Recognized marked platinum purity |
| 850 Pt or 850 Plat. | 85% | Recognized marked platinum purity |
| Other disclosed alloy or assay | Enter actual percentage | Use custom purity; do not infer platinum from total PGM content |
Under the US FTC Jewelry Guides, an item with at least 950 parts per thousand pure platinum may be described simply as platinum. The guides also recognize qualified 950, 900 and 850 platinum marks and require more detailed disclosures for certain lower-platinum or mixed-PGM alloys. Rules and hallmarking systems vary by country.
Entered Platinum Price and Benchmark Basis
LBMA describes the Platinum Price as a global benchmark for unallocated platinum delivered in London. IBA became administrator of the LBMA Platinum and Palladium Price benchmarks on 1 July 2026. Benchmark access, dealer quotes, futures prices and retail bullion prices can differ in timing, currency, location and licensing terms.
This calculator does not fetch, store or redistribute benchmark data. Enter a current price you are permitted to use and record its time, currency, unit and basis. Select “fine-platinum / spot-price basis” for a quote expressed as value per fine platinum unit; use a product-purity option only for a direct price per gross unit of that specific alloy or product.
Troy Ounce vs Regular Ounce
Weight units and price units are independent. For example, you may enter jewelry weight in grams and an allowed market price per troy ounce.
Worked 950 Platinum Value Example
Assume one 10-gram item marked 950 Pt, an invented USD 1,000 fine-platinum price per troy ounce, a 90% buyer payout and a USD 5 fixed fee:
- Fine platinum content = 10 g × 95% = 9.5 g
- Fine-platinum rate per gram = USD 1,000 ÷ 31.1034768 = about USD 32.1507
- Intrinsic platinum value = 9.5 g × USD 32.1507 = about USD 305.43
- Offer before fixed fee = USD 305.43 × 90% = about USD 274.89
- Estimated net payout = USD 274.89 − USD 5 = USD 269.89
The USD 1,000 price is only a formula example and is not a current quote.
Platinum Jewelry Value
Use net platinum-alloy weight, excluding gemstones and separately identifiable non-platinum components. A hallmark is useful evidence but may not establish current assay, authenticity or the weight of individual alloy constituents.
- Do not enter diamond, gemstone, spring, clasp, watch movement or filling weight as platinum.
- Do not treat rhodium plating as platinum content or as the item's full weight.
- Do not add design, brand, labor or retail markup to intrinsic metal value.
- Use an independent appraisal when jewelry, provenance or gemstones may carry material value.
Platinum Bars and Coins
A platinum bar or coin can trade above or below calculated metal value. Actual transaction price may reflect fabrication premium, mint, product size, authenticity, condition, tax, dealer spread, availability and collector demand. The calculator estimates metal content only.
Use the stated fine weight when a verified product specification provides it. If only gross weight and fineness are available, enter those values and let the calculator derive fine platinum.
Scrap Platinum and Catalytic Converters
Clean, homogenous platinum alloy with a reliable assay can be modeled from its net weight and platinum percentage. Industrial residues, laboratory equipment, dental material and catalysts may contain multiple metals or non-metal carriers and normally need specialist sampling, assay and settlement terms.
Do not enter the full weight of a catalytic converter as platinum. The converter includes a steel shell, ceramic or metallic substrate and other materials; recoverable platinum-group-metal content is a small, variable portion determined through specialist processes.
Intrinsic Value vs Dealer Payout
Ask whether refining, testing, treatment, transaction, shipping or minimum-lot costs are already included in the payout percentage. Entering the same deduction twice understates the estimate.
How to Improve a Platinum Value Estimate
- Use a calibrated scale and the correct troy or regular weight unit.
- Obtain net platinum-alloy weight after excluding stones and non-metal parts.
- Use a full hallmark disclosure, manufacturer specification or professional assay.
- Enter a current same-currency price and select its exact unit and purity basis.
- Compare written net offers at the same valuation time.
- Verify identity, testing method, fees, taxes and settlement timing independently.
Related Precious Metal Calculators
Frequently Asked Questions
How do I calculate platinum value?
What does 950 mean on platinum?
How much pure platinum is in 10 grams of 950 platinum?
Does this calculator provide a live platinum price?
Is a troy ounce the same as a regular ounce?
Should the entered spot price use 100% purity basis?
Can I include diamonds and gemstones in platinum weight?
Can this calculator value platinum in a catalytic converter?
Why might a dealer offer less than calculated platinum value?
Is the calculated platinum value guaranteed?
Official Reference Sources
- LBMA – Platinum and Palladium Price information
- LBMA – IBA benchmark administration from 1 July 2026
- US FTC – Jewelry, Precious Metals, and Pewter Industries Guides
- NIST Handbook 44 (2026), Appendix C – troy and avoirdupois conversions
- NIST Handbook 130 (2026) – precious-metal method-of-sale formula
Disclaimer: This calculator provides an educational estimate, not a live quote, licensed benchmark, professional assay, appraisal, guaranteed dealer offer, investment recommendation, tax advice or legal advice. Verify net weight, purity, price, currency, fees, taxes and settlement terms independently. The next page is the Palladium Value Calculator.