G
Grammar Checker
Grammar & Writing Guide

How do you know? vs How do you know that?

How do you know? vs How do you know that? which is much better to use in a sentence. Which is more popular in English form?

Looking on the internet deeply has found these results:

How do you know? is the most popular phrase on the web.

How do you know that?

193,300,000 results on the web

How do you know?

1112,000,000 results on the web

More popular!

Some examples and use cases from the internet:

Some examples and use cases from the internet:

  • How do you know that?
  • How do you know that?
  • Wait, how do you know that?
  • Hitler then asks, "How do you know that?"
  • Okay. How do you know that?
  • I read about it, in a book.
  • Then I'd say, "How do you know?"
  • But never to exist again?
  • (Derek) How do you know?
  • Yes. How do you know?
  • I said, "How do you know?"
  • "He's not in Napa, he's at the ice factory," he'll say, "How do you know?"
  • How do you know?
  • and he said, "How do you know?" I said, "I heard it!"

Related Comparison

Want to check your own writing right now?

Paste your text into our 100% free multi-tool workspace.

Open Grammar Checker
QuillBot-Grade Writing Suite

Upgrade to Grammarchecker.io Premium

Unlock 10 AI rewriting modes, unlimited word paraphrasing, executive fluency feedback, and deep plagiarism checking.

Upgrade to Premium