Direct answer
Plagiarism checking compares your essay's text against billions of web pages, journal articles, and previously submitted student papers, then returns a similarity index plus the exact sources that matched. You can run that check on your own draft before you submit, read the matched passages, and fix genuine overlaps — which is why pre-submission checking has become standard practice for university students. This guide explains how the check works, how to read the score, and how to keep your draft out of a shared student paper database.
How Do I Check My Essay for Plagiarism Before I Submit It?
The practical workflow is submit a draft, read the report, revise, and repeat. Turnitin's own guidance confirms that students can submit a paper, review the Similarity Report, make changes, and submit again where their instructor has enabled that option [2]. The key word is where: resubmission eligibility and repository settings are controlled by the instructor, not by you, so a second attempt may be blocked in some courses [2].
That is why many students run a private check first and only use their institutional slot once the draft is clean. A pre-submission check gives you the same two documents your professor sees — a similarity report and an AI writing report — without consuming your one permitted submission [2].
When you receive the report, work through it match by match rather than reacting to the headline number. Expand each highlighted passage, look at the source it points to, and decide whether it is a genuine citation failure or a false positive such as a common phrase or a correctly quoted line [1].
- Fix real problems: add quotation marks, add an in-text citation, or paraphrase in your own words.
- Leave legitimate matches: your reference list, direct quotes with citations, and standard terminology.
- Re-check after editing: new wording can create new matches, so verify the final version.
What Does the Similarity Score and Percentage in a Plagiarism Report Actually Mean?
The similarity index is simply the percentage of your essay's text that matched sources in the comparison database. Turnitin's documentation is explicit that this number is not a plagiarism verdict — it is an overlap measurement, and a high percentage can be entirely innocent when your paper contains many quotations, references, or discipline-specific phrases [3]. A 30% score built from a bibliography and four quoted passages is a very different situation from a 30% score built from uncited paragraphs.
The report separates the signal from the noise using filters. Bibliography and quote exclusion settings remove reference lists and properly marked quotations from the index, so the remaining percentage reflects prose you actually presented as your own [3]. When you open an individual match, you see the exact source text side by side with your sentence, which lets you judge whether the overlap is substantive or incidental [3].
Instructors read these reports the same way. They look for patterns — long uncited blocks, paraphrases that track a source too closely, or matches to papers from the same cohort — rather than treating any single percentage as proof of misconduct [1]. Understanding that distinction protects you from two opposite errors: panicking over a legitimate quote, and dismissing a genuine unattributed passage because the overall number looked low.
| What you see | What it usually means | What to do |
|---|---|---|
| High % from references and quotes | Filters not applied or many citations | Check the excluded-matches view before worrying |
| One long matching block | Likely missing citation or over-close paraphrase | Quote, cite, or rewrite that passage |
| Many small scattered matches | Common phrasing or technical terms | Usually fine; verify each briefly |
| Match to a student paper | Possible shared source or reused text | Investigate and rewrite if not your own |
Can I Check My Essay for Plagiarism Without It Being Saved to a Student Paper Database?
Yes — a non-repository check compares your file against the full database but does not add it to that database. This matters because institutional submissions are normally stored in the standard student paper repository, which is precisely how later students' essays get matched against yours [4]. Turnitin's explanation of the Similarity Report makes clear that the comparison database includes previously submitted student papers, so every stored submission becomes future comparison material [4].
For a draft you are still revising, storing it has two downsides. First, your unfinished text becomes a permanent match source that could flag your own final submission as a self-match. Second, if you share a draft with classmates, their overlapping text can create matches that look like collusion [4]. A non-repository preview avoids both problems while still showing you the same similarity and AI results.
Turnitin0.com is built around exactly that use case. It checks your .docx, .pdf, or .txt file without adding it to Turnitin's student paper database and without sharing reports with third-party databases, and you can delete files from your account afterwards. Files must be English, between 300 and 30,000 words, and under 20 MB. Turnaround is under 15 minutes in 98% of cases, and each order includes both the AI detection report and the similarity report in one checkout, with no subscription. Students in the US, UK, Canada, Australia, New Zealand, and Ireland have used the service for 100,000+ reports at a 4.9/5.0 satisfaction rating.
Reading a similarity report is only half the job — the other half is knowing what your own draft will look like when your professor opens it. Turnitin0 lets you preview that exact report before the deadline, so you can fix the flagged passages while you still have time to revise.
※ Turnitin0.com - Actual Turnitin AI Report Cover, Score, Flag And Similarity Summary
FAQ
Does a high similarity score mean I plagiarised?
No. The similarity index measures overlapping text, not intent, and reference lists, quotations, and common phrasing all raise it [3]. Read the individual matches before drawing any conclusion.
Can my professor see that I checked my essay beforehand?
A private, non-repository check does not appear in your institutional account, and the file is not added to the student paper database [4]. Your instructor only sees what you officially submit.
How many times can I resubmit my essay to Turnitin?
That depends entirely on your instructor's settings, since they control resubmission eligibility and repository options [2]. If you need unlimited iterations, run a private check between revisions instead.
Will checking my own draft create a self-match later?
It can if your draft is stored in a repository, because stored submissions become comparison sources for future checks [4]. A non-repository preview avoids creating that record.
What should I do if a match is a correctly cited quote?
Leave it. Properly cited quotations are expected academic practice, and quote and bibliography filters are designed to exclude them from the meaningful part of your index [1][3].