is there a good that checks for plagiarism

I haven't used any of these, but I'm sure you'll find a good site here.

https://www.google.com/search?source=hp&ei=l0j1XNbXC6OAtgXw54PgCw&q=plagiarism+checker+free&oq=plagiarism&gs_l=psy-ab.1.1.0l5j0i131j0l4.7116.9507..12547...0.0..0.131.1212.0j10......0....1..gws-wiz.....0.8FStZ3IyBq8

However, your teacher and school probably have a better one under contract for their use.

i meant is there a good website that checks for plagiarism

Yes, there are many plagiarism checking tools available that can help you identify instances of copied content. One popular tool is Turnitin, commonly used by educational institutions. However, it is primarily used by institutions rather than individuals, and access to it typically requires a subscription or affiliation with an institution.

If you are looking for free plagiarism checkers, there are several online tools available that can help you identify plagiarized content. Some popular options include Grammarly, Copyscape, and SmallSEOTools. These tools analyze your text and compare it to various sources on the internet to identify any similarities or matches.

To use these plagiarism checkers, you would typically copy and paste your text into the provided box or upload a document. The tool will then scan your content and provide a report on the percentage of matching content, along with the sources where it is found. They often highlight the specific sections that appear to be plagiarized. Keep in mind that some tools may have limitations in terms of the number of words they can check or the number of checks you can perform for free.

It is important to note that while these tools can help you identify potential cases of plagiarism, they are not foolproof. It is always recommended to review the results and exercise your own judgment to determine if any text requires further investigation.