Inflation adjuster
Compound an amount across years using an average annual inflation rate you choose.
Calculators
Small tools for intuition, not official forecasts. All logic runs locally in your browser.
Real interest rate calculator
Turn a nominal interest rate and an inflation rate into an approximate real rate and a more precise real rate.
Output gap calculator
Turn actual output and potential output into an output gap, or solve for the missing level.
Taylor rule calculator
Turn r star, inflation, an inflation target, and an output gap into a classic classroom suggested policy rate.
Okun's law calculator
Turn an Okun coefficient and either an unemployment change or a GDP growth gap into the other side of a classroom sketch.
Phillips curve calculator
Turn expected inflation, a natural rate, and a slope into implied inflation or implied unemployment.
Yield curve spread calculator
Subtract a short yield from a long yield and label the classroom shape as upward sloping, flat, or inverted.
Fiscal multiplier calculator
Turn an MPC into a spending multiplier, add an import leakage, or apply a multiplier you type to a fiscal impulse.
Velocity of money calculator
Solve the quantity theory identity for velocity, for nominal GDP, or for money.
Money multiplier calculator
Turn a required reserve ratio and a new deposit or open market purchase into the money multiplier, the maximum change in loans, and a round by round deposit table.
GDP deflator calculator
Solve for the GDP deflator, for real GDP, or for nominal GDP, or for the percent change between two deflator indexes.
Purchasing power parity calculator
Turn two basket prices into a PPP exchange rate, compare it with a market quote, or compute a real exchange rate.
Opportunity cost and comparative advantage calculator
Turn output per unit of resource into an opportunity cost, or compare two producers for absolute advantage, comparative advantage, and a terms of trade range.
Supply and demand equilibrium calculator
Solve a straight demand line and a straight supply line for the equilibrium price and quantity, or for a shortage or surplus at a price you type.
Educational only. Results are estimates. They are not investment advice and do not replace official CPI series from ONS or BLS.