Helm Chart Dependency Calculator
Calculate the total number of direct and transitive chart dependencies and the total download size pulled by `helm dependency update`.
Inputs
Charts listed directly in this chart's Chart.yaml dependencies block.
Dependencies pulled in indirectly by the direct dependencies' own charts.
Average .tgz size of each dependency chart pulled during `helm dependency update`.
Total Dependencies
10charts
Total Download Size
0.244MB
Transitive Share of Dependencies
60.0%
Step by step
Total dependencies = direct + transitive
4 + 6
= 10 charts
Total download size = total deps × avg chart size
10 × 25KB
= 250.00KB (0.244MB)
How it works
Helm resolves and downloads every chart listed under `dependencies` in Chart.yaml into the `charts/` directory, and those subcharts can themselves declare further dependencies. The effective dependency count a `helm dependency update` pulls is the sum of direct and transitive charts, and the total bandwidth/storage cost of that pull is that count multiplied by the average packaged chart size.
Formula
totalDownloadSize = (directDeps + transitiveDeps) × avgChartSize
- D
- Direct dependencies
- T
- Transitive dependencies
- C_{avg}
- Average chart package size in KB
- S
- Total download size in KB
Frequently Asked Questions
Does Helm deduplicate shared transitive dependencies?
No — by default each parent chart vendors its own copy of a dependency into its `charts/` directory, so the same subchart can be downloaded and stored multiple times across a dependency tree unless aliased and managed carefully.
Where do downloaded dependencies get stored?
In the chart's local `charts/` directory as `.tgz` archives (or unpacked directories), which are then bundled into the parent chart's own package when it's built.
How can I reduce dependency download size?
Use `condition` and `tags` in Chart.yaml to make optional subcharts skippable, pin to minimal versions, and consider extracting rarely-changing shared logic into a library chart instead of a full subchart.
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