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11 Free Plagiarism Checker for Students in 2025
Are you worried about accidentally copying someone else’s work in your assignments? You’re not alone! Plagiarism can sneak up on even the most careful students.
Luckily, there are free plagiarism checkers designed just for students that can help you stay original and confident.
Here are 11 trusted plagiarism checker websites for students, each with their own strengths, to help you keep your writing honest and unique essays.
Our Pick
PlagiarismDetector
$
0
00
Monthly -
Best For: Detailed reports and academic work.
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1,000 words per scan
Our Pick
Our Rating:
★★★★★ 4.8/5
Our Pick
Our Rating:
★★★★★ 4.7/5
Our Pick
Our Rating:
★★★★★ 4.8/5
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11 FREE Plagiarism Checker for Students
1. PlagiarismDetector
Key Features: AI-powered, supports multiple file formats (DOCX, TXT, PDF), deep search option, multilingual support.
Word Limit: 1,000 words per scan (free version).
AI Writing Detection: Offers AI content detection and can flag AI-generated text.
Plagiarism Percentage: Yes, displays a clear plagiarism percentage.
User Experience: Straightforward, but ads can be distracting.
Best For: Detailed reports and academic work.
Our Pick
Our Rating:
★★★★★ 4.8/5
For quick, small checks, tools like PapersOwl, PlagiarismDetector, and EditPad are fast and simple.
2. GPTZero Plagiarism Checker
Key Features: Specializes in detecting AI-generated content, simple to use.
Word Limit: Typically up to 5,000 characters (about 800–900 words).
AI Writing Detection: Yes, strong focus on AI detection.
Plagiarism Percentage: Provides a probability score for AI content, may not show traditional plagiarism percentage.
User Experience: Clean, fast results.
Best For: Checking if text is AI-generated.
Our Pick
Our Rating:
★★★★★ 4.8/5
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3. Scribbr Plagiarism Checker
Key Features: Deep checks, highlights sources, detailed reports.
Word Limit: 7,000 words per file (free trial version).
AI Writing Detection: Focuses on plagiarism, not AI detection.
Plagiarism Percentage: Yes, shows detailed percentages.
User Experience: Professional, easy to understand.
Best For: Larger documents and theses.
Our Pick
Our Rating:
★★★★★ 4.8/5
If you’re working on a serious essay, Scribbr and Grammarly Premium go deeper—higher accuracy and source links, though not entirely free.
4. PapersOwl Free Plagiarism Checker
Key Features: Simple to use, supports file uploads, highlights plagiarized text.
Word Limit: Up to 1,000 words per check (free version).
AI Writing Detection: Primarily checks for plagiarism, not designed to detect AI-generated text.
Plagiarism Percentage: Yes, shows the percentage of copied content.
User Experience: Clean interface, quick results.
Best For: Essays, research papers, and assignments.
Our Rating:
★★★★★ 4/5
5. Plagiarisma
Key Features: Checks against web sources, supports multiple languages, can scan files and URLs.
Word Limit: 2,000 characters per check (about 300–350 words).
AI Writing Detection: Not specifically designed for AI detection.
Plagiarism Percentage: Yes, shows the percentage of plagiarism.
User Experience: Basic interface, quick scanning.
Best For: Short assignments and quick checks.
Our Rating:
★★★★★ 4/5
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6. Rephrase
Key Features: Free, easy to use, highlights matched sources, offers paraphrasing tools.
Word Limit: 1,000 words per check (free version).
AI Writing Detection: Focuses on plagiarism, not AI detection.
Plagiarism Percentage: Yes, provides a plagiarism score.
User Experience: Simple and ad-light.
Best For: Students who want to check and rephrase text.
Our Rating:
★★★★★ 4/5
Tip for Students:
Use one free tool for a quick scan, then deepen check with Grammarly Premium or Scribbr if it’s a major paper.
7. PlagiarismCheckerAI
Key Features: AI-based, checks for both plagiarism and AI-generated content, color-coded results.
Word Limit: Up to 2,000 words per scan (free).
AI Writing Detection: Yes, detects AI-written text.
Plagiarism Percentage: Yes, shows the percentage of copied material.
User Experience: Modern, easy-to-read reports.
Best For: Tech-savvy students needing both plagiarism and AI checks.
Our Rating:
★★★★★ 4/5
8. PaperRater Plagiarism Checker
Key Features: Checks grammar and plagiarism, gives writing suggestions.
Word Limit: 5 pages or about 1,500 words per check (free).
AI Writing Detection: Not specifically designed for AI detection.
Plagiarism Percentage: May not always provide a clear percentage.
User Experience: Simple but sometimes slow.
Best For: Quick grammar and originality checks.
Our Rating:
★★★★★ 4/5
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9. EditPad Plagiarism Checker
Key Features: Fast, supports multiple languages, highlights copied content.
Word Limit: 1,000 words per scan (free).
AI Writing Detection: Not designed for AI detection.
Plagiarism Percentage: Yes, gives a plagiarism score.
User Experience: Minimalist and quick.
Best For: Short essays and homework.
Our Rating:
★★★★★ 4/5
10. Grammarly Plagiarism Checker
Key Features: Checks grammar and plagiarism, highlights sources.
Word Limit: 500 words per check (free version).
AI Writing Detection: Does not detect AI-generated text.
Plagiarism Percentage: Shows if plagiarism is found, but detailed percentage may require a premium account.
User Experience: Polished, user-friendly.
Best For: Quick checks and grammar fixes.
Our Rating:
★★★★★ 4/5
11. EasyBib Plagiarism Checker
Key Features: Checks plagiarism and grammar, highlights matched sources.
Word Limit: 500 words per scan (free version).
AI Writing Detection: Not designed for AI detection.
Plagiarism Percentage: Shows a percentage of plagiarism.
User Experience: Simple and educational.
Best For: Short assignments and citations.
Our Rating:
★★★★★ 4/5
