GDP Calculator

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

✓ Your Input

Select a calculation type and enter values, then 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 a nation's economic performance and is used to compare the economic output of different countries. GDP can be calculated using three approaches: expenditure, income, and production (value-added).

How to Use This Calculator

  1. Select a calculation type from the dropdown (Expenditure Approach, Income Approach, Growth Rate, GDP Per Capita, GDP Deflator, or Convert Units).
  2. Enter the required values in the input form.
  3. Select appropriate units (millions, billions, or trillions).
  4. Click Calculate to see the results, visualization, and step-by-step solution.
  5. Use Reset to clear and hide results.

Calculation Types

Expenditure Approach

Calculate GDP using: GDP = C + I + G + (X - M), where C=Consumption, I=Investment, G=Government, X=Exports, M=Imports.

Income Approach

Calculate GDP using: GDP = W + R + I + P, where W=Wages, R=Rent, I=Interest, P=Profit.

Growth Rate

Calculate GDP growth rate: ((Current - Previous) / Previous) × 100.

GDP Per Capita

Calculate GDP per person: GDP / Population.

GDP Deflator

Calculate price level indicator: (Nominal GDP / Real GDP) × 100.

Convert Units

Convert between millions, billions, and trillions.

Key GDP Formulas

Expenditure Approach:

GDP = C + I + G + (X - M)

Income Approach:

GDP = W + R + I + P

Growth Rate:

Growth Rate = ((Current - Previous) / Previous) × 100

GDP Per Capita:

GDP per Capita = GDP / Population

GDP Deflator:

Deflator = (Nominal GDP / Real GDP) × 100

Important Notes

  • All input values must be non-negative (except profit which can be negative).
  • Previous GDP and Real GDP cannot be zero for growth rate and deflator calculations.
  • Population must be greater than zero for per capita calculations.
  • The calculator automatically handles unit conversions between millions, billions, and trillions.
  • Expenditure and income approaches should yield the same GDP value in theory.
  • GDP deflator of 100 means no inflation; above 100 indicates inflation.
  • Results are displayed with step-by-step solutions showing the calculation process.

Common Applications

  • Economic analysis and policy making
  • Comparing economic performance between countries
  • Measuring economic growth over time
  • Assessing standard of living (GDP per capita)
  • Calculating inflation rates (GDP deflator)
  • Economic forecasting and planning
  • Academic research and education

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