Work out turnout percentage instantly with clear inputs, formula shown and shareable results.
Turnout is votes polled as a percentage of registered electors. The invalid vote rate is worth watching alongside it: a rising rate can indicate ballot design problems, deliberate protest voting, or confusion introduced by a change in voting procedure.
Turnout
Turnout % = Votes polled / Registered electors x 100
Invalid rate
Invalid % = Invalid votes / Votes polled x 100
Indicative estimate only. Fees, entitlements, limits and formulas vary by jurisdiction, statute, policy wording and the facts of the case. This is not legal, tax, insurance or financial advice — confirm with a qualified professional or the relevant authority.
Registered electors is the standard official measure. Voting-age population turnout is lower and better for cross-country comparison where registration rates differ.
Ballot complexity, literacy, the presence of a none-of-the-above option, and whether voting is compulsory all influence the rate substantially.