Semantic Versioning (SemVer) Calculator & Range Checker
Calculate Major, Minor, and Patch version increments and validate package dependency ranges.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. No data is ever transmitted across the network.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
How to Use Semantic Versioning (SemVer) Calculator & Range Checker
Enter your starting version string (e.g. 2.4.1 or 1.0.0-beta.1).
View the automatically generated Major, Minor, and Patch target versions.
Enter a dependency range (e.g. ^2.4.0) to test if your version satisfies the package requirement.
Frequently Asked Questions
What is the difference between ^ (caret) and ~ (tilde) in SemVer?
The caret (^) allows minor and patch updates (e.g., ^1.2.3 allows >=1.2.3 <2.0.0), while the tilde (~) restricts updates to patch releases only (e.g., ~1.2.3 allows >=1.2.3 <1.3.0).
When should I increment the Major version?
Increment Major when you introduce breaking API changes that are incompatible with previous consumer code.
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