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gdpClassic tool

GDP Calculator

Add consumption, investment, government spending, and net exports to estimate GDP with the expenditure approach.

Use this GDP calculator when you want a quick total without building the formula by hand. It fits class exercises, scenario comparisons, and simple explanations of how the expenditure approach works.

Enter consumption, investment, government spending, exports, and imports using the same period and the same currency. The result shows total GDP, net exports, and the formula with your values.

Use the same currency and the same time period in every field so the result stays consistent.

SummaryFill in all five fields to calculate GDP.
Estimated GDP—
Net exports—
Applied formulaGDP = C + I + G + (X - M)

Use clear inputs to get a more useful result.

This tool uses the standard expenditure formula: GDP = C + I + G + (X - M). Exports are added because they reflect domestic output sold abroad, while imports are subtracted so foreign production is not counted as part of domestic output. If you compare quarters, years, or projections, keep the same currency, scale, and time frame in every field. This calculator is useful for understanding the structure of the equation, but it is not a substitute for official series or deeper economic adjustments.