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GDP Calculator

Calculate Gross Domestic Product using the Expenditure Method — summing consumption, investment, government spending, and net exports.

Calculate Gross Domestic Product using the Expenditure Method — the most common approach, which sums everything an economy spends on final goods and services.

Consumption — C ($)

Investment — I ($)

Government Spending — G ($)

Exports — X ($)

Imports — M ($)

Enter at least one component value.

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Everyday Uses

Understanding the news

When headlines say GDP grew 2%, see what actually goes into that number.

Economics coursework

Practice the expenditure approach — C + I + G + (X − M) — with your own figures.

Comparing economies

Assemble GDP figures to compare countries or track one economy over time.

Component insight

See how much consumption, investment, government, and trade each contribute.

What it deliberately leaves out

Unpaid care, housework and volunteering are excluded, while cleaning up a pollution spill counts as output. GDP measures recorded activity, not wellbeing, and was never designed to.

Nominal against real

Nominal GDP rises with inflation alone, so an economy standing still can appear to grow. Real GDP strips price changes out, and confusing the two is the commonest error in reading the news.

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.