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Thomson Reuters Westlaw

Thomson Reuters Westlaw is the industry's most preferred online legal research service year after year. With Westlaw, you can find the legal information you are looking for quickly and confidently so you can build the strongest argument possible. You need to know you are relying on accurate law - because your practice depends on it.

Only on Westlaw can you:

  • Know your research is complete with access to the most comprehensive collection of legal information
  • Deliver better results confidently with WestSearch, the only search engine designed specifically for the law
  • Rely on the most current version of the law with proprietary editorial enhancements
  • Access your legal research from anywhere with the free, award-winning Westlaw app
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We continually invest in our content and technology. The latest: a fresh, easy way to find and use Secondary Sources on Westlaw.

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Did you know…Westlaw is the most preferred online legal research service?

The National Law Journal - Best of 2018

See all Westlaw awards

Why Westlaw?

Westlaw helps to make sure you don't miss anything by serving up the most on-point documents. With access to the largest collection of legal information, backed by our rigorous editorial process, you can access legal resources such as:

  • Cases
  • Statutes and regulations
  • Secondary sources
  • Practice areas
  • News

See all Westlaw content

  • Briefs
  • Trial court documents
  • Public records
  • Expert materials
  • And much more

Our team of bar-admitted attorney editors are tracking changes in the law every day so you can trust that the law you get is accurate and up to date.

Westlaw leverages a long-standing history of proprietary analysis of the law and exclusive tools like Key Numbers and KeyCite, as well as headnotes, notes of decisions, indexes, and secondary sources.

Couple our editorial excellence with WestSearch, the world's most advanced legal search engine, and you quickly get the documents most relevant to your search query.

The introduction of WestSearch, the only search engine designed specifically for the practice of law, was a significant leap in the application of Natural Language processing, machine learning, and information retrieval. WestSearch was a milestone event in advancement of legal technology, but we didn't stop there.

Check out the latest enhancements

Year after year, Westlaw is voted Best Online Legal Research Service by industry professionals. In fact, Westlaw has been named the most preferred online legal research service for 13 years running, as recognized by the ABA.

Learn more about Westlaw awards

2017 Best of The National Law Journal 2017 NLJ - Best of Midwest New York Law Journal - Best of 2017 Texas Lawyer - Best of 2017

Experience Westlaw for yourself

Work smarter, more efficiently, and with total confidence in your results.

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Introduction to Westlaw

WATCH: Introduction to Westlaw (9:44)

Tom Carpenter

"When you've got a research tool like Westlaw, there is no reason not to be complete and thorough in your research."

Tom Carpenter
City Attorney

Go mobile with Westlaw

Access your legal research online anytime without losing Westlaw features and functionality with free Westlaw apps, including our award-winning iPad® app and new iPhone® app.

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Best Legal Research App

Best Legal Research App

  • - The National Law Journal
  • - The Recorder® (CA)
  • - Best of the Midwest

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