What is the GDP Deflator?
The GDP deflator is a broad measure of price level changes across an entire economy, comparing the value of all goods and services produced at current prices (nominal GDP) to their value at base-year prices (real GDP).
The Formula
GDP Deflator = (Nominal GDP ÷ Real GDP) × 100. A deflator of 110 means overall prices have risen 10% relative to the base year used for real GDP.
Note: This tool is for general economic education and planning purposes only.
Last reviewed August 2026