Interactive calculators
Tools that turn visible rates, counts, prices, run times, and goals into reproducible outputs.
About LootCalc
LootCalc is an independent website for game probability, expected-value, and progress calculations. It is not affiliated with the game publishers covered on the site and cannot access private player-account data.
What we publish
The site focuses on a small set of user tasks: estimate an outcome under a stated probability model, compare expected value with time or cost, and plan progress toward a target. A page should add an adjustable tool, a worked interpretation, or a source-aware workflow—not simply repeat a public rate.
Evidence-aware guides
Instructions for choosing inputs, recognizing excluded cases, and interpreting long-run averages.
Planning views
Progress, pace, and break-even views that separate user-entered assumptions from documented rules.
Who runs LootCalc
LootCalc is an independently operated publication. It launched in September 2025, is not owned by, sponsored by, or affiliated with any game publisher, and does not sell in-game items, boosting, or account services. The site is funded by advertising, which has no influence on which sources a calculator cites or what a formula outputs.
Editorial work follows one process for every page: a documented mechanic must link to a public source near the claim, formula-changing facts carry a verification date, and anything that cannot be sourced is exposed as a user input or labeled as an example. Pages that change materially keep a visible changelog or correction history, so readers can see what was fixed and when.
Corrections are a committed channel, not an afterthought: send the affected URL and the public source you are comparing against to support [at] lootcalc.com or through the contact page. Confirmed errors are corrected in the page copy and noted in that page's changelog rather than silently edited away.
The source boundary
Documented mechanics should link to a public source near the claim. A formula-changing fact also needs a verification date because live-service rules can change. When no adequate public source exists, the calculator should ask the user for a value or label the default as an example.
Community wikis and observations can be useful references, but they are not automatically official or statistically representative. LootCalc does not claim private datasets, hidden APIs, anonymous expert credentials, or sample sizes that readers cannot inspect.
What the outputs do not promise
- A probability is not a guarantee for one player or one session.
- A price or route-time input is not a live market feed unless the page identifies one.
- An old season or patch value should not be treated as current without a dated source.
- A calculator cannot recover an undocumented hidden counter from incomplete history.
Corrections
If a source has changed, a formula produces the wrong result, or a page overstates what is known, send the affected URL and the public source you are comparing against. Material corrections should appear in the page copy or changelog rather than being silently hidden.