Arma Reforger Storage Planner
Tell the planner what you already have installed and what you want to add. It deduplicates shared Workshop mods, resolves real package sizes server-side, and shows exactly how much extra space the new mods need.
Everything already on your console or PC right now. These mods are counted as space you have used, not space you need.
Mods you plan to add. Anything already installed is matched and never counted twice; a different version of an installed mod is treated as a replacement.
Your lists stay in your browser. Only Workshop mod IDs and versions are sent to the API, which resolves their real package sizes and returns the plan. Passwords, admin IDs, and every other config field never leave your device.
How the plan is calculated
The planner compares two mod sets. Anything on your wish list already installed at an acceptable version is shared, so you do not download it again. Wish-list mods that are absent, or present at a different version, become additional storage. Version identity is per-mod per-version, because the same mod at two versions is two payloads on disk.
The download peak
Peak usage is higher than the final footprint: a mod is downloaded before the old version is removed, so the peak includes both. The planner reports the peak separately, since that is the figure a disk has to survive.
Exact bytes versus estimates
Sizes are the exact byte counts the Workshop download list reports for that version wherever they resolve. Mods whose size could not be resolved are counted separately and labelled, never silently guessed at or dropped from the total.
API and related tools
The same calculation is available as POST /v2/tools/storage-plan; see the V2 reference. Trying to free space instead? Use the Dependency Blockers. Sizing hardware? Try the Hosting Calculator.
Frequently asked questions
Do I need a live server listing to use the storage planner?
No. Paste a config.json file or mods array today. When the live server database is available, server search can feed the same planner automatically.
Does the planner upload my server config?
No. Config files are parsed in your browser and only the Workshop mod IDs and versions are sent to the API, which resolves their real package sizes and returns the plan. Passwords, admin IDs, and other config fields never leave your browser.
Why are some sizes marked estimated?
A mod's package size can be unpublished or not yet cached. Those mods are given the median size of the mods indexed by reforgermods.net, counted separately from the exact bytes, and reported with a coverage percentage so a total is never presented as more precise than it is.
What is the download peak?
Downloads land before the files they replace are deleted, so the largest amount of storage you need at any one moment is everything installed now plus everything being downloaded. The planner reports that peak separately from the finished library, so it can tell you when a modpack fits only if you free space first.