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All calculators →Value a weight of metal Combine weight, purity and a source-labelled reference.
Metal weight converter Convert between grams, troy ounces, kilograms, ordinary ounces, pounds and tolas.
Gold purity calculator Convert karat to fineness, and find the fine-metal content of an alloy.
Bullion premium calculator Compare a dealer price against the contained-metal reference, including delivery and fees.
Scrap gold payout calculator Estimate the fine-metal value and a buyer’s net payout after a percentage allowance and fees.
Metal profit and loss calculator Work out gross proceeds, net profit and return after buying and selling costs.
Gold–silver ratio calculator Calculate the relative reference value of gold and silver from aligned prices.
Oil barrel and volume converter Convert crude oil between barrels, litres, US gallons, cubic metres and metric tonnes.
Crude oil cargo value calculator Estimate the gross value of a crude cargo after quantity loss and a price adjustment.
API gravity converter Convert between API gravity and specific gravity, and see whether crude is lighter or heavier.
Refinery yield estimator Split crude input into gasoline, distillate and other product volumes.
Refinery crack-spread calculator Estimate a simple product-value margin per barrel of crude from entered yields and prices.
Oil import and export value calculator Turn a daily oil flow into a period volume and estimated trade value.
Fuel cost comparison calculator Compare the fuel cost of two vehicles, routes or fuels over the same distance.
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Compare two markets Align dates and compare indexed price movements.
Gold–silver ratio See gold measured in silver over a shared history.
Historical archive Explore daily, monthly and yearly observations and download data.
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All interactive stories →Which commodity changed more? Compare two histories from the same starting point.
What is an oil cargo worth? Explain barrels, adjustments, loss and costs.
Where is metal supply concentrated? Read producer shares with their limits.
What commodities are inside everyday things? Explore a phone, car, home or farm.
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