GDP Calculator

Calculate Gross Domestic Product using expenditure and income approaches, growth rate, GDP per capita, deflator, and unit conversions with step-by-step solutions.

Calculate

Select a calculation type, enter your values, and click Calculate to see results with step-by-step solution and visualization.

Complete User Guide

What is GDP?

Gross Domestic Product (GDP) is the total monetary value of all finished goods and services produced within a country's borders in a specific time period. It serves as a comprehensive measure of economic performance and is used to compare economic output of different countries. GDP can be calculated using expenditure, income, and production (value-added) approaches.

10 Calculation Types

Expenditure Approach

GDP = C + I + G + (X − M). The most common method.

Income Approach

GDP = W + R + I + P. Sum of all factor incomes.

Growth Rate

((Current − Previous) / Previous) × 100.

GDP Per Capita

GDP / Population. Standard of living indicator.

GDP Deflator

(Nominal / Real) × 100. Price level indicator.

Convert Units

Convert between millions, billions, and trillions.

Real GDP

Nominal GDP / (Deflator/100). Adjusts for inflation.

GDP Projection

Compound growth forecast over N years.

Debt-to-GDP Ratio

(National Debt / GDP) × 100. Key fiscal indicator.

Output Gap

((Actual − Potential) / Potential) × 100. Economic slack indicator.

Key Formulas

Expenditure: GDP = C + I + G + (X − M)

Income: GDP = W + R + I + P

Growth Rate: ((Current − Previous) / Previous) × 100

Per Capita: GDP / Population

Deflator: (Nominal GDP / Real GDP) × 100

Real GDP: Nominal GDP / (Deflator / 100)

Projection: GDP × (1 + rate/100)^years

Debt Ratio: (National Debt / GDP) × 100

Output Gap: ((Actual − Potential) / Potential) × 100

Important Notes

  • All inputs must be non-negative (except profit, which can be negative).
  • Previous GDP and Real GDP cannot be zero for growth rate and deflator calculations.
  • GDP deflator of 100 means no inflation; above 100 indicates inflation.
  • Expenditure and income approaches should yield the same GDP value in theory.

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