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Semver Calculator

Compute next semantic versions from change types — breaking bumps major automatically. Tag v2.4.1 correctly after that breaking fix — local logic, free, no signup.

100% Local Browser Native

How to Use the Semver Calculator

1. Enter current version

Plus the change types since release.

2. Read next version

Major/minor/patch per semver rules.

3. Tag the release

Include prerelease suffixes where needed.

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Frequently Asked Questions

When major vs minor vs patch?

Breaking change → major (2.4.1→3.0.0); backward-compatible feature → minor (→2.5.0); fixes only → patch (→2.4.2). One breaking change anywhere forces major.

Prereleases?

Append -alpha/-beta/-rc with dot numerics (3.0.0-beta.2); prereleases sort before the release. Reset numerics per phase.

0.x versions?

Anything may break anytime pre-1.0 by convention — minor bumps carry breaking changes. Ship 1.0 to promise stability.

Does version math upload anything?

No — logic runs locally in your browser. Nothing leaves your device.

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Last updated October 2026