Calculate the current value and allocation of gold, silver, platinum, and palladium holdings. Add your total cost basis and estimated selling deduction to measure gain or loss, then compare the portfolio with your own target percentages.
Last Updated: July 21, 2026
Precious Metals Portfolio Calculator
Track metal value, allocation, return, concentration, and target rebalancing.
Enter Your Metal Holdings
Portfolio Results
| Metal | Fine weight | Current value | Allocation | Cost basis | Gain or loss | Target | Rebalance amount |
|---|---|---|---|---|---|---|---|
| Gold | 0 g | $0.00 | 0% | — | — | — | Set targets to 100% |
| Silver | 0 g | $0.00 | 0% | — | — | — | Set targets to 100% |
| Platinum | 0 g | $0.00 | 0% | — | — | — | Set targets to 100% |
| Palladium | 0 g | $0.00 | 0% | — | — | — | Set targets to 100% |
Enter at least one holding and its current price. Target percentages are optional but must total 100% for rebalancing.
Privacy: Your entries stay in your browser. This calculator does not save or transmit portfolio data.
How to Use This Precious Metals Portfolio Calculator
- Select one display currency. Enter every metal price and cost basis in that same currency.
- Choose whether your market prices are quoted per troy ounce, gram, or kilogram.
- For each metal you own, enter the gross quantity, holding unit, and purity percentage.
- Enter a current price for gold, silver, platinum, or palladium. The calculator does not fetch live spot prices.
- Add the total cost basis for each holding if you want gain, loss, and ROI results.
- Enter an estimated selling deduction for dealer spreads, fees, or other selling costs.
- Optionally set target percentages totaling 100% to estimate value-based rebalancing amounts.
- Select Calculate Portfolio and review the summary, allocation bars, and metal-by-metal table.
Use Load Sample to see a complete fictional example. Replace every sample number before making a real comparison. The Set 25% Targets button creates equal value targets. It does not recommend an investment mix.
What the Calculator Measures
This tool values four common precious metals in one place. It first converts each gross holding into grams. It then applies purity to estimate fine-metal weight and converts that weight to the selected market-price basis. Current value is based only on the numbers you enter.
The portfolio summary separates gross metal value from estimated sale value. Gross value applies the entered market price without a selling deduction. Estimated sale value applies one portfolio-level deduction percentage. Real dealer terms often differ by product, metal, quantity, condition, location, and transaction size. If each holding faces a different spread, run separate scenarios or use the closest conservative combined estimate.
Cost basis is optional. When every valued holding has a cost basis, the calculator shows gross gain or loss, gross ROI, and net gain after the estimated selling deduction. If one active holding lacks cost data, portfolio return stays hidden to avoid presenting an incomplete figure as a complete return.
Precious Metals Portfolio Formulas
Current metal value = fine-metal grams ÷ grams per price unit × current price
Portfolio allocation = metal value ÷ total portfolio value × 100
Gross gain or loss = current value − total cost basis
Gross ROI = gross gain or loss ÷ total cost basis × 100
Estimated sale value = gross value × (1 − selling deduction %)
Rebalance amount = total value × target % − current metal value
A positive rebalance amount means the metal is below the entered value target. A negative amount means it is above the target. The output is a mathematical difference, not a buy or sell recommendation. Taxes, lot selection, storage, liquidity, and dealer terms may change any practical action.
Worked Example: Gold and Silver Portfolio
Assume an investor holds 2 troy ounces of 99.9% gold at an entered price of 2,500 per troy ounce and 100 troy ounces of 99.9% silver at 30 per troy ounce.
- Gold value = 2 × 99.9% × 2,500 = 4,995
- Silver value = 100 × 99.9% × 30 = 2,997
- Total gross value = 4,995 + 2,997 = 7,992
- Gold allocation = 4,995 ÷ 7,992 = 62.50%
- Silver allocation = 2,997 ÷ 7,992 = 37.50%
If the combined cost basis is 6,700, gross gain is 1,292 and gross ROI is about 19.28%. A 3% selling deduction produces an estimated sale value of 7,752.24 and a net gain of 1,052.24 before tax. With a user-entered 60% gold and 40% silver target, the calculation shows gold 199.80 above target and silver 199.80 below target.
Troy Ounce vs Regular Ounce
Precious-metal market prices commonly use the troy ounce. One troy ounce equals exactly 31.1034768 grams in the conversion used by the calculator. A regular avoirdupois ounce equals 28.349523125 grams. Selecting the wrong ounce creates a material valuation error.
If a bar or coin states its fine-metal content in troy ounces, enter that quantity and use 100% purity to avoid reducing fine content twice. If you enter gross jewelry or alloy weight, use the stated or tested purity. Product specifications, hallmarks, and assays should be checked independently.
Cost Basis, Premiums, and Selling Deductions
For a useful return estimate, cost basis should reflect the acquisition costs you intend to measure. This often includes purchase price, dealer premium, transaction tax, shipping, and initial fees. Some investors also add storage and insurance paid to date. Use one consistent method across all holdings.
Spot price and resale value are not the same. Coins and bars may be bought above spot and sold below an advertised retail price. Collectible coins may depend more on rarity, grade, certification, and demand than metal content. The U.S. Federal Trade Commission has highlighted the importance of purchase price, fees, melt value, and reasonable resale value in precious-metals transactions.
The calculator uses one percentage to estimate selling deductions:
- Enter 0% to compare holdings at gross entered market value.
- Enter the expected gap between gross value and proceeds if you have a dealer quote.
- Include fixed fees in a separate manual adjustment if they do not translate well into a percentage.
- Do not treat the result as a guaranteed bid, liquidation value, or appraisal.
How Target Allocation and Rebalancing Work
Market movements change a portfolio’s value mix even when quantities stay unchanged. Rebalancing compares current value percentages with targets chosen by you. Investor.gov defines rebalancing as bringing a portfolio back to its original asset-allocation mix after holdings move out of alignment.
This calculator shows value differences for four metals. It does not decide suitable targets. A complete financial portfolio may also contain cash, bonds, stocks, property, retirement accounts, or other assets. Owning several metals remains exposure to one broad commodity group, so it should not be confused with diversification across unrelated asset classes.
Targets must total 100% because the tool treats the entered metals as the full metals sub-portfolio. If metals represent only part of your overall investments, first decide the total metals allocation separately. Then use this page to analyze the mix inside that metals portion.
Ways to Rebalance Without Misreading the Output
A positive or negative value is the amount needed to reach the entered target at current prices. It does not account for price movement during a transaction. Common mathematical approaches include:
- Add new money to metals below target.
- Reduce metals above target and direct proceeds to metals below target.
- Use future purchases to move gradually toward the chosen mix.
- Review targets periodically or when allocation moves beyond a personal tolerance band.
Before selling, consider taxes, holding periods, product liquidity, bid-ask spreads, storage arrangements, and minimum dealer quantities. Rebalancing may create transaction costs or taxable events. Seek qualified advice when the amount or tax impact is significant.
Accuracy Checklist
- Use current prices from one consistent time and source.
- Keep price and cost basis in one currency. The currency selector formats numbers but performs no exchange-rate conversion.
- Confirm whether the quoted price is per troy ounce, gram, or kilogram.
- Separate regular ounces from troy ounces.
- Use fine-metal quantity at 100% purity, or gross quantity with the correct purity.
- Include all acquisition costs required by your chosen cost-basis method.
- Use a realistic selling deduction based on an actual quote when possible.
- Remember that physical inventory, exchange-traded products, pooled accounts, and futures contracts have different ownership and fee structures.
Methodology and Sources
The weight conversion uses the U.S. National Institute of Standards and Technology value of 31.1034768 grams per troy ounce. The rebalancing explanation follows general educational guidance from the U.S. Securities and Exchange Commission and Investor.gov. Consumer-risk notes reflect Federal Trade Commission guidance on precious-metals pricing, fees, and investment scams. See the NIST precious-metals conversion guide, Investor.gov rebalancing definition, and FTC investment-scam guidance.
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Frequently Asked Questions
What does a precious metals portfolio calculator calculate?
It estimates current value, fine-metal weight, allocation, cost basis, gain or loss, ROI, estimated sale value, concentration, and target-rebalancing differences for entered gold, silver, platinum, and palladium holdings.
Does this calculator use live precious-metal prices?
No. Enter current prices from a source you trust. Use one price time, currency, and price basis across all metals for a consistent comparison.
How is metal portfolio allocation calculated?
Each metal’s current value is divided by the total current value of all entered metals, then multiplied by 100. Allocation is based on value, not physical weight.
What should I include in precious-metals cost basis?
Use a consistent method. It often includes purchase price, dealer premium, applicable transaction tax, shipping, and acquisition fees. Tax rules differ, so confirm the formal tax basis with a qualified professional.
What is the estimated selling deduction?
It is a user-entered percentage for the expected difference between gross entered value and sale proceeds, such as a dealer spread or selling fee. It is not a guaranteed dealer payout.
How does the rebalancing calculation work?
The calculator multiplies total current value by each target percentage, then subtracts the metal’s current value. Positive results are below target and negative results are above target.
Do gold, silver, platinum, and palladium create a diversified portfolio?
They diversify exposure within precious metals, but they remain part of a broad commodity group. Diversification across a full portfolio normally considers other asset classes and personal risk needs.
Should I enter troy ounces or regular ounces?
Select the unit shown by your source. A troy ounce is 31.1034768 grams, while a regular avoirdupois ounce is 28.349523125 grams. They are not interchangeable.
Does the calculated gain or loss include tax?
No. The result is a mathematical estimate before income, capital-gains, goods-and-services, sales, or other taxes. Tax treatment depends on location, ownership structure, transaction, and holding history.