To determine the best Best Pictures since 1964, 24/7 Tempo developed an index based on several measures from the Internet Movie Database and Rotten Tomatoes. Movies that won the Oscar for Best Picture before 1964 were excluded because of missing data.
The index is a composite of the movies' IMDb rating, Rotten Tomatoes audience score, and Rotten Tomatoes Tomatometer score. All ratings were weighted equally. Only films with at least 25,000 reviews on IMDb, 5,000 audience reviews on Rotten Tomatoes, 10 Tomatometer critics reviews, and that have won an Academy Award for Best Picture in 1964 or a later year were considered. Data was collected mid-March 2021.
Supplemental data on domestic box office and production budgets by movie came from industry data site the Numbers.
