Find contained-metal value
Start with the metal value calculator when you know weight and purity. Use the purity calculator to translate karat or fineness, and the weight converter when a quote uses a different mass unit.
Commodity calculators for metals and oil.
Practical worksheets for metal value, weight, purity, oil volumes, refinery yields and transaction costs. Every result keeps its formula and assumptions visible.
Metal calculators
Metal value calculator
Use the latest available reference or your own price to value a custom weight and purity.
Calculate metal value →Material weight and cost
Turn sheet, bar or tube dimensions into volume, mass and indicative raw-material cost.
Estimate material →Metal weight converter
Convert between grams, troy ounces, kilograms, ordinary ounces, pounds and tolas.
Open calculator →Gold purity calculator
Convert karat to fineness, and find the fine-metal content of an alloy.
Open calculator →Bullion premium calculator
Compare a dealer price against the contained-metal reference, including delivery and fees.
Open calculator →Scrap gold payout calculator
Estimate the fine-metal value and a buyer’s net payout after a percentage allowance and fees.
Open calculator →Metal profit and loss calculator
Work out gross proceeds, net profit and return after buying and selling costs.
Open calculator →Gold–silver ratio calculator
Calculate the relative reference value of gold and silver from aligned prices.
Open calculator →Oil calculators
Convert physical quantities, explain refinery arithmetic and estimate entered trade values. These tools use your figures rather than pretending to be live quotes.
Oil barrel and volume converter
Convert crude oil between barrels, litres, US gallons, cubic metres and metric tonnes.
Open oil calculator →Crude oil cargo value calculator
Estimate the gross value of a crude cargo after quantity loss and a price adjustment.
Open oil calculator →API gravity converter
Convert between API gravity and specific gravity, and see whether crude is lighter or heavier.
Open oil calculator →Refinery yield estimator
Split crude input into gasoline, distillate and other product volumes.
Open oil calculator →Refinery crack-spread calculator
Estimate a simple product-value margin per barrel of crude from entered yields and prices.
Open oil calculator →Oil import and export value calculator
Turn a daily oil flow into a period volume and estimated trade value.
Open oil calculator →Fuel cost comparison calculator
Compare the fuel cost of two vehicles, routes or fuels over the same distance.
Open oil calculator →Choose a calculator by the decision you need to make.
Model a purchase or sale
The bullion premium calculator separates metal value from the dealer price and purchase costs. The scrap payout calculator applies recovery, payout and fee assumptions to a recovered-metal estimate.
Compare outcomes
Use the profit and loss calculator for purchase, sale, storage and fee inputs. The gold–silver ratio calculator compares aligned references; it does not create a trading recommendation.
Calculator outputs depend on the inputs and assumptions shown beside them. A contained-metal result excludes authenticity, collectible value and any cost that has not been entered.
