Economics Tools

Economics tools let you put supply-and-demand theory and macro data to work without a spreadsheet or a stats package. Each tool here runs in your browser, takes no sign-up, and keeps your inputs on your device. They cover the two halves of the field most searchers ask about: micro (how prices and quantities settle in a market) and macro (how output, prices, and inflation move across an economy).

Start with the Equilibrium Price Calculator, which finds the price and quantity where a linear demand curve meets a linear supply curve — the core of any microeconomics problem set. For demand behavior, the Price Elasticity of Demand Calculator measures how much quantity responds to a price change, and the Income Elasticity Calculator tells you whether a good is normal or inferior.

On the macro side, the GDP Calculator adds up consumption, investment, government spending, and net exports, while the CPI Inflation Calculator converts past dollars to today's prices using the consumer price index. Most of these calculators live in Finance Tools; for the regression and averages behind empirical work, see Statistics Tools, and for the algebra underneath, Math Calculators.