semantic version calculator — free browser tool | fatcousin

compare semver versions · validate format · range specifiers · bump calculator · runs locally

Parsing follows semver.org v2.0.0. Numeric identifiers must not have leading zeros; prerelease and build segments compare per spec.

compare

version A

A < B
B is ahead of A (Δmajor=0, Δminor=-1, Δpatch=2).
tuple distance (informative): 1002

version B

validate & parse

version

valid ✓major 1minor 2patch 3pre beta.1build exp.sha.5114f85

Normalized display: 1.2.3-beta.1+exp.sha.5114f85

0.0.1 (version is greater)
1.0.0 (version is greater)
1.5.0 (version is less)
2.0.0 (version is less)

range check

version

range specifier

satisfies ✓

Caret (^): allow changes that do not modify the left-most non-zero digit — compatible with 1.2.0 under npm rules.

would satisfy

1.2.0, 1.2.3, 1.3.0, 1.2.3-alpha.1

would not satisfy

0.0.1, 1.0.0, 2.0.0, 2.1.0-rc.1

bump calculator

current version

Major breaks compatibility; minor adds backward-compatible features; patch fixes bugs. Pre-release bump increments the last numeric prerelease tag or starts at 0.