What is the Vote Percentage Share Calculator?
This calculator takes the number of votes received by each candidate, party, or ballot option in a contest and computes the total votes cast plus each option's percentage share of that total. The math is a simple proportion-of-total and applies universally to any election, poll, survey, or share-of-total problem — there are no country-specific rules.
How to use it
Choose how many candidates or options you want to score (2 to 12), then enter the vote count for each. Blank fields count as zero. The result shows the total votes, every option's percentage share to two decimals, and highlights the leader and its margin over the runner-up.
The formula explained
First sum every vote count to get the total. Then each option's share is its votes divided by the total, multiplied by 100. If the total is zero (all fields blank), every share is shown as 0% to avoid dividing by zero.
$$\text{total} = \sum_i \text{votes}_i$$$$\text{percent}_i = \frac{\text{votes}_i}{\text{total}} \times 100$$
Worked example
With votes of 81,268,564, 74,216,603, 1,864,720 and 402,716 the total is 157,752,603. The shares are 51.52%, 47.05%, 1.18% and 0.26% respectively. Because each row is rounded to two decimals, the displayed percentages may not add up to exactly 100% — that is expected.
$$81{,}268{,}564 + 74{,}216{,}603 + 1{,}864{,}720 + 402{,}716 = 157{,}752{,}603$$$$\frac{81{,}268{,}564}{157{,}752{,}603} \times 100 = 51.52\%$$
FAQ
Do the percentages always sum to 100%? Not exactly — per-row rounding to two decimals can leave a tiny gap.
Can I use decimals or non-vote quantities? Yes. Although built for votes, any non-negative number works for general share-of-total problems.
What happens if I leave everything blank? The total is 0 and every share displays as 0%; no winner is selected.
