DAO Voting Power Viz is a free online tool that visualizes token-weighted governance power — paste a list of voters and their token balances and it computes each voter's share of the vote, charts the distribution, and reports concentration stats like the Herfindahl index and the Nakamoto coefficient. No wallet, no API call, nothing leaves this page.
1 · Voters & token balances
One voter per line: name, balance — balances may use thousands separators. Lines starting with # are ignored.
Concentration stats
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Top-1 share
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Top-5 share
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Herfindahl index
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Nakamoto coeff.
2 · Passing threshold
Threshold to pass a proposal50%
Voting-power distribution
Share table
#
Voter
Balance
Share
Cumulative
Coalition
How it works
Share — each voter's share is their balance divided by the total supply of all listed voters, sorted largest first. Cumulative share shows how much power the top n voters hold together.
Herfindahl index — the sum of every voter's squared share, on a 0–10,000 scale. Below 1,500 is competitive, 1,500–2,500 moderately concentrated, above 2,500 highly concentrated.
Nakamoto coefficient — the smallest number of voters whose combined share exceeds 50%. A coefficient of 2 means two wallets can pass anything on their own.
Passing coalition — the smallest set of top voters whose cumulative share reaches your threshold slider. Brass bars and rows are in the coalition.
All figures are computed in your browser from the list you pasted or the sample you loaded. Sample datasets are illustrative — they are not real governance data from any DAO.