A reference library
How ranking systems work
Clear explanations of the systems that rank everything from national football teams to web pages — covering sports, education, finance, technology, and algorithms.
What you'll find here
Clear explanations of well-known ranking systems
How scores are calculated, at a high level
What inputs and assumptions each system uses
Known limitations and real-world use cases
Browse by category
Seven collectionsSports Rankings
National teams, leagues, and competition ranking systems.
FIFA World Rankings · Elo-based sports rankings · Tournament seeding systemsEducation & Academia
Institutional, journal, and research impact rankings.
University ranking methodologies · Citation and impact metrics · Academic performance indexesFinance & Risk Scoring
Credit, market, and risk-based ranking models.
Credit score models · Market index methodologies · ESG and risk scoring systemsTechnology & Platforms
Ranking systems used by digital platforms and services.
App store rankings · Content and media charts · Marketplace ranking systemsAlgorithms & Models
Mathematical and computational ranking methods.
PageRank · Elo and TrueSkill · Voting and aggregation methodsMedia & Entertainment
Charts, ratings, and audience measurement systems.
Music charts · Film and TV rating systems · Review aggregation modelsBusiness & Economics
Corporate, national, and economic performance rankings.
Company rankings · Competitiveness indexes · Economic development rankingsAbout RankStash
Neutral summaries of publicly documented systems
RankStash explains publicly documented ranking systems using neutral, high-level summaries. Information is based on official documentation, academic sources, and widely accepted references. Pages are reviewed periodically and updated only when core methodologies change.