Calculators and tools
Calculators and charts built on stored metal prices and economic data. A tool appears here once its data is stored.
Calculators
Gold and scrap valuation
Estimate gold content value from weight, purity and a dated gold price.
Bullion premium and offer comparison calculator
Calculate your premium over spot from a fine-metal weight and total price, with an optional second offer comparison.
Equivalent gold and silver quantities
Calculate metal quantities after your sale deduction, purchase premium and fees.
US dollar purchasing power
Convert a dollar amount between months using stored seasonally adjusted CPI-U index levels.
Inflation-adjusted gold price
Compare daily USD gold closes with the same prices restated using stored US CPI-U index levels.
Charts and metrics
Gold-silver ratio
Gold price divided by silver price in the same currency. Latest snapshots pair quotes within six hours; historical points pair each UTC day’s final stored prices.
Gold carat prices
Calculated intrinsic gold value per gram by purity: price per troy ounce divided by 31.1034768, multiplied by carat divided by 24. Retail premiums and fabrication costs are excluded.
Gold / US real-yield correlation
Rolling Pearson correlation of USD gold daily returns and daily 10-year US real-yield changes. Each result requires 90 aligned pairs. Descriptive, not causal or predictive.
Gold period highs and lows
Select dates to compare observed weekday-close extremes and their dates.
Gold monthly returns and seasonality
Explore month-end returns, missing coverage and descriptive seasonal averages when enough complete years exist.