GDP Calculator
Calculate Gross Domestic Product using the Expenditure Method — summing consumption, investment, government spending, and net exports.
Frequently Asked Questions
What is GDP and what does it measure?
GDP (Gross Domestic Product) is the total monetary value of all goods and services produced within a country in a given period. It is the most widely used measure of economic size and growth. The US GDP is approximately $28 trillion (2024); global GDP is ~$110 trillion. A positive GDP growth rate signals economic expansion; two consecutive quarters of negative growth is the informal definition of a recession.
What is the Expenditure Method for calculating GDP?
GDP = C + I + G + (X − M): C = Private consumption (households buying goods and services, ~70% of US GDP). I = Business investment (equipment, buildings, inventory). G = Government spending (not transfer payments like welfare). X − M = Net exports (exports minus imports). This is the most commonly cited GDP calculation method.
Why are imports subtracted from GDP?
GDP measures domestic production. When a consumer buys an imported good, the spending is captured in C (consumption), but the good was made abroad, so it must be subtracted from net exports (X − M) to cancel it out. Only goods and services produced within the country's borders count toward GDP.
What is the difference between real GDP and nominal GDP?
Nominal GDP measures output at current prices — it can increase simply because prices rose, not because output grew. Real GDP adjusts for inflation using a base year, making it a true measure of volume growth. When economists talk about "GDP growth," they almost always mean real GDP growth (typically 2–3% per year in developed economies).
What are the limitations of GDP as a measure of wellbeing?
GDP ignores income inequality (a country could have high GDP but most citizens be poor), unpaid work (childcare, volunteering), environmental degradation, sustainability, and happiness. Countries like Bhutan use the Gross National Happiness index. Economists complement GDP with the Human Development Index (HDI), Gini coefficient, and measures of median household income.