Legal research tools


Built on the same trusted foundation, versions of Westlaw are available to meet your needs — and your budget

Westlaw Classic

Get accurate and comprehensive legal research you can trust.

Access the most comprehensive collection of primary and secondary law for thorough research.

Find related law quickly with the most reputable and granular subject classification system, the Key Number System.

Work confidently, knowing you're relying on good law with the best-in-class citator, KeyCite.

Retrieve background history of attorneys, judges, experts, and companies.

Westlaw Edge

Gain a competitive advantage through intelligent insights and analysis.

Upload legal documents to create a report indicating authority that may have been missed and authority contrary to your opponent’s position.

Access data-driven insights on judges, courts, attorneys, law firms, damages, and case types to enhance your case strategy.

Gain better exposure to invalid law with KeyCite Overruling Risk.

Instantly compare statute and regulation versions.

Includes all the features and functionality of Westlaw Classic.

Westlaw Precision

Harness the power of generative AI and more precise researching.

AI-Assisted Research on Westlaw Precision provides relevant answers to research questions with links to trusted Westlaw authority so you can make more well-informed decisions and complete the remainder of your research with increased efficiency.

Search, filter, and browse by topic in half the time.

Quickly see the specific point of law in a case that has been invalidated.

View related cases that have a pattern of being cited together even if neither cites the other.

Includes all the features and functionality of Westlaw Edge.

Westlaw is the most trusted and award-winning legal research service.

Related Westlaw offerings

Practical Law

Accelerate how you find answers with powerful generative AI capabilities and the expertise of 650+ attorney editors. With Practical Law, access thousands of expertly maintained how-to guides, templates, checklists, and more across all major practice areas.

Learn more about Practical Law

PeopleMap on Westlaw

Find people, assets, and hidden connections faster with the premier public records search tool.

Learn more about PeopleMap

Company Investigator on Westlaw

Get fast and accessible business intelligence, eliminating hours of research while helping you make informed decisions.

Learn more about Company Investigator

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Westlaw Precision

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Westlaw Edge

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Westlaw Classic

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