A Rotten Tomatoes score is not a rating of how good a film is. It is the share of approved critics who gave the film a positive review. That is the whole mechanism, and almost every misunderstanding about the site flows from it. A 70% means roughly seven in ten counted critics said something kind. It says nothing about how kind, or how harsh the other three were.
The distinction matters because the number gets quoted everywhere as if it were a grade. A film at 70% could be one most critics liked a lot, or one they all thought was merely fine. The site itself separates the two ideas: the percentage is the "Tomatometer," and a separate average rating shows how strongly critics felt. Reading only the tomato is like reading a verdict without the sentence.
So what is a review, in this context? Merriam-Webster defines a review as "a critical evaluation (as of a book or play)" — an act of judging quality, not a score on a fixed scale. Aggregators take those judgments, which critics wrote in prose with all their qualifications, and flatten them into a binary: fresh or rotten. The flattening is where the math starts.
How does the Tomatometer get calculated?
The calculation is simple counting. Rotten Tomatoes collects reviews from approved publications and individual critics. Each review is classified as fresh or rotten, either by the critic's own star rating or, when there is no numeric rating, by the site's staff reading the review. The Tomatometer is the percentage of counted reviews that are fresh.
Three details complicate that simple picture. First, the denominator moves. A score printed on opening weekend might rest on a few dozen reviews; a month later, the same film's score has shifted as hundreds more come in. Second, not every review counts equally toward inclusion — the site weights the pool toward established publications, and a change in which critics are approved can nudge a film's percentage without anyone re-watching anything. Third, the binary throws away information. A review that says "flawed but worth seeing" and one that says "a masterpiece" both count as fresh. A review that says "boring but technically accomplished" and one that says "offensive and inept" both count as rotten.
That is why a 70% is not what it seems. It is a measure of consensus direction, not consensus strength. Two films can both sit at 70% while one has an average critic rating far above the other. If you want to know how good a film is, the average rating tells you more than the tomato does.
Why does a small review count move the number so much?
Early in a film's release, the pool is small, so each new review shifts the percentage visibly. Ten reviews, seven fresh: that is 70%. One more rotten review drops it to about 64%. Later, with two hundred reviews in, a single rotten review barely dents the figure. This is arithmetic, not opinion, and it explains a familiar pattern: scores drift in the first weeks as the sample grows.
Small samples also invite cherry-picking. A studio quote can truthfully cite a high score from a moment when only friendly early reviews were in. A detractor can quote a low one from the same window. Neither number is false; both are snapshots of an incomplete count. The label that matters most, and the one casual readers skip, is the review count sitting next to the percentage.
What is the difference between the critics' score and the audience score?
The two scores count different populations. The Tomatometer counts approved critics. The audience score counts self-selected members of the public who chose to rate the film on the site. That difference in who is counted produces differences in what is measured, and the two numbers regularly diverge — sometimes by a wide margin.
Neither population is a random sample of moviegoers. People who feel strongly are more likely to rate, and campaigns can push fans or detractors toward the rating button. The audience score is best read as a measure of enthusiasm among people motivated to rate, not as a referendum on quality. We have covered the deeper reasons the two groups disagree in our piece on why critics and audiences score the same film so differently.
What about the popcorn bucket and the certified fresh badge?
Rotten Tomatoes layers labels on top of the raw percentage, and each label has its own threshold rules. "Certified Fresh" is a status a film holds only while its score stays above the site's threshold for a sustained period and with a minimum review count; a film can lose the badge as late reviews drag its percentage down. The audience-side labels work similarly, marking the share of positive user ratings. The thresholds are the site's own editorial choices, not an industry standard.
Our analysis: treat the badges as shortcuts and the percentages as raw counts, and read both against the review count and the average rating. A film at 75% with an average rating near the top of the scale is a different recommendation than a film at 75% with a middling average, even though the headline number is identical. The site gives you the stronger signal; you have to scroll past the tomato to find it.
How should a reader actually use the score?
Practical steps, in order. Look at the review count before the percentage. Then look at the average rating, which restores the nuance the binary removed. Then, if the film matters to you, sample the actual reviews — the site links to them, and the spread of opinion is usually more informative than either aggregate number.
It also helps to remember what a review is for. As Wikipedia's overview of the review form notes, a review is "an evaluation" whose author "may assign the work a rating to indicate its relative merit" — the rating is a convenience bolted onto an argument, not the argument itself. Aggregators inherit that convenience and amplify it. The prose underneath is where a critic actually made a case.
For a wider view of how the two big aggregators differ, our guide to Rotten Tomatoes and Metacritic compares their scoring systems directly. And if you want to know what the people writing those reviews are actually doing all day, start with what a film critic actually does. For related coverage, see Rotten Tomatoes and Metacritic: how to read the scores.
The takeaway
What this means, plainly: a Rotten Tomatoes percentage answers one narrow question — did most counted critics approve? — and answers it well. It does not grade the film, it does not measure how much critics liked it, and it moves as the sample grows. Use the count, the average rating, and a skim of the reviews, and the tomato becomes a useful signpost instead of a misleading grade.
