How to Use the Text Similarity Checker
Enter two pieces of text in the fields above and the tool instantly calculates their Jaccard similarity — the ratio of shared words to total unique words — expressed as a percentage. High scores (80%+) indicate very similar content; low scores mean the texts are largely different.
Similarity Score Guide
| Score Range | Meaning |
|---|---|
| 80% and above | Very high similarity (nearly the same content) |
| 50% to 79% | Moderate similarity (substantial overlap) |
| Below 50% | Low similarity (mostly different content) |
Frequently Asked Questions
What similarity algorithm is used?
Jaccard similarity calculates the ratio of common words (intersection) to total unique words (union) across both texts, expressed as a percentage.
Does capitalization affect results?
No, the comparison is case-insensitive. Punctuation acts as word separators, so only pure word tokens are compared.
When is the score 100%?
100% means both texts use exactly the same set of unique words. Word order and how many times a word appears do not affect the score.