Direct answer
Direct Answer - Yes, Turnitin can show 0% in the AI writing report, but a literal 0% is the only exact low number you will see; scores from 1% to 19% are displayed as an asterisk (*%) rather than as precise percentages [1]. In practice, a 0% reading means the report detected no clear signs of AI-generated writing in your draft, while every other sub-20% result simply collapses into the *% bucket [1]. So if you see 0% next to the AI indicator, it is a genuine, explicit outcome — not a rounding artifact — and it indicates that the text appears overwhelmingly human-written.
How Does Turnitin Display Low AI Scores in Its AI Writing Report?
Turnitin's AI writing report rates the likelihood of AI-generated content as a percentage from 0 to 100, based on the portions of the submission it can actually analyze [2]. The key display rule for low scores is that any value below 20% is shown as *% rather than an exact single-digit figure such as 3% or 12% [2].
The only explicit low numeric outcome students typically see is 0%; otherwise, all sub-20% results fall into the asterisk bucket, so the interface deliberately avoids false precision on scores that are near zero [2]. This means a report can show either a clean 0% or the *% placeholder — there is no intermediate single-digit reading in the interface at all.
The percentage is a likelihood indicator, not a plagiarism verdict, and it reflects only the passages the detector could evaluate [2]. Because the model flags possible AI involvement at the sentence level, a low overall score tells you the draft shows little evidence of machine-generated text, but it never claims certainty [2].
What Does a 0% Turnitin AI Score Actually Mean for Your Paper?
A 0% AI score means the detector found no meaningful traces of AI-generated writing in the analyzed portion of your submission [3]. It does not certify that the paper is human-written beyond any doubt; it reports that the text shows no detectable signs of machine generation at the time the check ran [3].
Because the interface collapses 1%–19% into *%, the practical line students should care about is between clear AI signals (double-digit scores) and no clear signals (0% or *%) [3]. A 0% reading is the strongest "no AI detected" outcome the report can produce, so you can treat it as strong evidence that your draft reads as human-written [3].
One important caveat: the score is a snapshot of the version you submitted. If you edit the document, swap sections, or resubmit a revised draft, the reading can change, so a 0% today does not guarantee the same result after heavy AI-driven edits [3]. Always pair the AI percentage with the similarity report before deciding your next step [3].
How Can You Check Your Turnitin AI Score Before Submitting Your Paper?
The smartest time to see your AI score is before the official hand-in, and the simplest route is to run your draft through a checking service that delivers the same AI writing and similarity reports your instructor sees [4]. A quick pre-check converts the guesswork of "will this get flagged?" into a concrete percentage and match list you can act on [4].
When you pre-check, look at both numbers together: a high AI score signals that you should rewrite the flagged passages, while a high similarity percentage points to citations or paraphrasing that need attention [4]. Fixing issues before submission gives you time to revise calmly instead of reacting to a report after the deadline has passed [4].
Pre-submission checking also protects genuinely human-written work: if your draft is fully your own writing, a report will typically show 0% or *%, giving you the confidence to submit without second-guessing [4]. And if it does show a flag, you still have the opportunity to edit before anyone in your department ever sees the score [4].
None of this should be guesswork. If you want to know exactly how your draft looks through the same AI writing and similarity lenses your instructor uses, run it through turnitin0 before you submit — you get the actual Turnitin AI report cover, score, flags, and similarity summary on your own draft, delivered in minutes.
※ Turnitin0.com - Actual Turnitin AI Report Cover, Score, Flag And Similarity Summary
FAQ
1. Does Turnitin show 0% AI, or does it always show an asterisk?
Turnitin can show a literal 0% for submissions with no detectable AI-generated content; every other sub-20% score is displayed as *% rather than an exact number [1][3].
2. What does the *% symbol mean in the AI writing report?
The asterisk indicates an AI score below 20% — the detector found little to no evidence of AI writing. It is a deliberate display choice that avoids false precision on low scores [1][2].
3. Is a 0% AI score a guarantee the paper was written by a human?
No. 0% means no clear AI-writing signals were detected at the time of analysis, but it is a likelihood indicator, not absolute proof [3].
4. Can my AI score change after I edit and resubmit?
Yes — the report reflects the version you submit. Editing, adding citations, or rewriting flagged passages can shift the score when you run a new check [3][4].
5. How can I check my Turnitin AI score before submitting?
Use a pre-submission checking service that delivers the same AI writing and similarity reports instructors see, then revise flagged sections before your deadline [4].