Free Gini Coefficient Calculator
Calculate the Gini coefficient to measure inequality in a distribution, ranging from 0 (perfect equality) to 1 (maximum inequality).
Gini Coefficient
0.400000
Mean Value40.0000
Total200.0000
Gini Coefficient vs Income/Value 1 (lowest)
How to Calculate the Gini Coefficient
Formula
Gini = Sum of all xi - xj
The Gini coefficient sums all pairwise absolute differences and normalizes. A value of 0 means perfect equality (everyone has the same). A value approaching 1 means extreme inequality (one person has everything). It is the most widely used measure of income inequality.
Example Calculation
Five incomes: 10, 20, 30, 40, 100.
- 01Mean = (10+20+30+40+100)/5 = 200/5 = 40
- 02Sum of all 25 pairwise |xi - xj| = 440
- 03Gini = 440 / (2 * 25 * 40) = 440 / 2000 = 0.22
- 04This indicates moderate inequality
Frequently Asked Questions
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