What's the meaning of GDP Deflator？

The GDP deflator is a measure of the price level of all new, domestically produced, final goods and services in an economy. It is used to adjust nominal GDP to real GDP, which reflects changes in the quantity of goods and services produced in an economy, rather than changes in prices. The GDP deflator is calculated by dividing nominal GDP by real GDP and multiplying by 100. It is a broad measure of inflation in an economy and is often used to compare the economic performance of different countries.