Herfindahl-Hirschman Index Calculator
Result
Herfindahl-Hirschman Index Calculator Calculate market concentration using HHI for antitrust and competitive analysis. — free online calculator.
Formula
- Herfindahl-Hirschman Index Calculator calculates its result from Sum, Market, Share. It uses the formula HHI = Σ(Market Share %)². Change any input to recalculate the result instantly.
- The main inputs are Sum, Market, Share. Enter them in the units and format shown in the calculator.
- Use monetary amounts, rates and time periods exactly as labeled; the result reflects the assumptions entered on this page.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Herfindahl-Hirschman Index
- Sum: 2
- Market: 3
- Share: 4
Using Sum = 2, Market = 3, Share = 4, the calculated result is 0.0288.
Sample result: Calculating…
Frequently asked questions
What does the Herfindahl-Hirschman Index calculate?
Herfindahl-Hirschman Index Calculator Calculate market concentration using HHI for antitrust and competitive analysis. — free online calculator.
Which values should I enter?
Enter Sum, Market, Share using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: HHI = Σ(Market Share %)².
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.