GDP Calculator: Per Capita, Real, Growth
This GDP calculator handles the four calculations students and analysts use most. The expenditure method adds consumption, investment, government spending and net exports, C + I + G + (X − M). The per capita mode divides GDP by population. The real GDP mode adjusts nominal GDP with the GDP deflator, and the growth mode finds the percent change between two years. Values can be in any unit, such as billions or trillions of dollars, as long as you use the same unit for every field. Each result shows the formula with your numbers so you can check homework.
GDP Calculator
Calculate GDP from C + I + G + (X − M), plus GDP per capita, real GDP and growth rate.
How to use the GDP Calculator
- Choose what to calculate.
- Enter the values in one unit, such as trillions of dollars.
- Read the result and the worked formula.
- Switch modes to compare per capita or real GDP.
GDP formulas
GDP = C + I + G + (X − M). Per capita = GDP ÷ population. Real GDP = nominal ÷ deflator × 100. Growth = (new − old) ÷ old × 100.
Features
- Expenditure approach C + I + G + (X − M)
- GDP per capita
- Real GDP with the deflator
- GDP growth rate
- Shows the formula with your numbers
- Runs in your browser
Frequently asked questions
What is the formula for GDP?
The expenditure approach is GDP = C + I + G + (X − M): consumer spending, business investment, government spending, and exports minus imports.
How do you calculate GDP per capita?
Divide GDP by population. For example, $30 trillion ÷ 340 million people is about $88,235 per person.
What is the difference between nominal and real GDP?
Nominal GDP uses current prices. Real GDP removes price changes: real GDP = nominal GDP ÷ deflator × 100.
How is GDP growth rate calculated?
Growth = (this year − last year) ÷ last year × 100. Economists usually use real GDP so that price rises do not count as growth.
Are the default numbers official?
No. The defaults are round example figures in trillions of dollars, close in size to the US economy, for practice. Use BEA data for official values.