Semver Calculator

What is Semver Calculator?

Semver Calculator parses, compares, and manipulates Semantic Versioning strings according to the semver.org 2.0.0 specification. It increments major, minor, and patch versions, evaluates version range expressions (^, ~, >=, ||), determines whether a version satisfies a given range, and sorts lists of versions. It also explains the meaning of common range operators used in package.json and other dependency files.

Package maintainers planning releases, developers managing dependency constraints, and DevOps engineers automating version bumps in CI/CD pipelines. The tool runs entirely in your browser — your data never leaves your device.

How to Use Semver Calculator

1. Enter a version string like 1.2.3 in the input field
2. Use the increment buttons to calculate the next major, minor, or patch version
3. Enter a range expression like ^1.2.3 to see all matching versions explained
4. Compare two versions to determine their ordering relationship
5. Test whether a specific version satisfies a given range constraint

Common Use Cases

• Determining whether a library update is a breaking change by checking the major version increment
• Evaluating whether a package version satisfies a dependency range specified in package.json
• Calculating the next version number according to semver rules after a release
• Sorting a list of release tags to find the latest stable version
• Understanding what versions are included in ranges like ^1.2.3, ~1.2.3, or >=1.0.0 <2.0.0

Pro Tips

• The caret ^ in package.json (^1.2.3) allows minor and patch updates but not major — it means >=1.2.3 <2.0.0 for versions 1.0.0+, making it the default and most common range in npm
• The tilde ~ (e.g., ~1.2.3) only allows patch updates — it means >=1.2.3 <1.3.0, use it when you want more conservative dependency updates
• Pre-release versions (1.0.0-beta.1) have lower precedence than the release version (1.0.0) — they are excluded from ^ and ~ ranges unless explicitly included

Why Use This Tool?

• Privacy-first: All processing happens locally in your browser. No data is transmitted to any server.
• No installation required: Works in any modern browser on desktop or mobile.
• Completely free: No account, no credit card, no usage caps.
• Fast and reliable: Powered by modern Web APIs for near-instant results.

Related Concepts

Learn more about related topics: semver.org, npm version ranges, Dependency resolution, Release management.

Frequently Asked Questions