Economics • Income Distribution
Lorenz Curve & Gini Coefficient Simulator
Load a country's GDP, population and Gini coefficient — or set your own — and watch the Lorenz curve bow away from the line of perfect equality. Then see exactly how many dollars, on average, someone in each 10% of the population would receive — for Cambridge International AS/A Level Economics and NCEA Level 2/3 Economics.
GDP and population are shown in each country's own currency; edit them to explore your own scenario.
Lorenz Curve
Cumulative Share of Income vs. Cumulative Share of Population
0.33
Gini Coefficient
Gini Coefficient
A Gini of 0.33 indicates low income inequality, similar to some of the more equal developed economies.
Area A: the inequality gap
Area B: income actually held
Gini = A ÷ (A + B). The more the Lorenz curve bows away from the diagonal, the bigger Area A is relative to Area B, and the higher the Gini coefficient.
Average Income by Population Decile
How GDP, population and the Gini coefficient split total income across ten equal-sized 10% population groups