Estimate GitHub Actions matrix job counts from pasted matrix JSON or YAML-like axis lists.
This counter helps review CI cost and queue size before changing a GitHub Actions matrix. Paste a matrix block and see how many jobs it expands to.
What it counts
The tool reads JSON matrices or simple YAML-style axis arrays, multiplies axis lengths, subtracts matching `exclude` rows and shows the final estimated job count.
Scope
GitHub’s workflow expression language can be dynamic. This calculator handles static pasted matrix definitions and is meant for quick review, not full workflow execution.