Text Similarity Checker: Compare Two Texts Online | Free Tool
1 usesText Similarity Tips
Levenshtein Distance
Uses the Levenshtein algorithm to calculate the minimum number of edits needed to transform one text into another.
Similarity Percentage
Get a clear similarity score from 0% (completely different) to 100% (identical) with color-coded results.
Detailed Metrics
See edit distance, common words count, and length difference for deeper analysis.
Privacy-First
All comparison happens locally in your browser. Texts are never uploaded.
Frequently Asked Questions
How is text similarity calculated?
Using Levenshtein distance: the minimum number of single-character edits (insertions, deletions, substitutions) to change one text into another.
What do the colors mean?
Green (70%+): Very similar. Yellow (40-70%): Somewhat similar. Red (below 40%): Not similar.
Can I use this for plagiarism checking?
It provides basic similarity comparison. For comprehensive plagiarism detection, use a dedicated plagiarism checker.
Is this free?
Yes.
How does the 'common words' feature help me analyze text differences effectively?
The 'common words' feature highlights specific vocabulary shared between your two texts. By identifying these identical terms, you can quickly understand the linguistic overlap and pinpoint areas of similarity or unique content. This is invaluable for content creators and editors aiming to refine documents, avoid redundancy, ensure consistent terminology, or understand how two texts relate beyond just their overall similarity percentage. It provides granular insight into your text analysis.
How to Compare Texts
- Paste first text in the left panel
- Paste second text in the right panel
- Click Compare
- View similarity percentage and metrics