If nominal GDP is $12,000 and the GDP deflator is 80, then real GDP is $15,000.

GDP Deflator

An economic metric that converts output measured at current prices into constant-dollar GDP, detaching price changes from real output changes.

Nominal GDP

Gross Domestic Product measured in current market prices, without adjustment for inflation, reflecting the value of all goods and services produced by an economy in a year.

Real GDP

Gross Domestic Product adjusted for inflation, measuring the value of all goods and services produced within a country in real terms.