On Drop Rate
Privacy
About

About On Drop Rate

On Drop Rate helps you check roughly how long you'd need to grind for an item, and whether you're actually dry right now, or just feeling like it.

We're passionate OSRS players, grinding since the game's 2013 release across multiple accounts and every seasonal game mode along the way.

This vibe-coded project is built and maintained by us.

Greetings from Team On Drop Rate.

Privacy Policy

Who runs this: On Drop Rate (ondroprate.com). Questions or data requests can be sent to info@ondroprate.com.

What we collect: nothing beyond Google Analytics (GA4), and only after you click Accept on the cookie banner. We don't have accounts, don't store anything you type into the search box, and don't sell or share data with anyone beyond Google acting as our analytics provider.

Analytics details: pages viewed, approximate location (from IP, not exact), device/browser type, and how you found the site, via cookies typically named _ga and _ga_* (up to 2 years). See Google's Privacy Policy for how Google processes this data.

Legal basis: your consent, given (or withheld) via the cookie banner. You can withdraw it at any time by clearing this site's cookies/storage in your browser — you'll be asked again on your next visit.

Your rights: under GDPR you can request access to, correction of, or deletion of any data associated with you by emailing us at the address above.

This policy may be updated occasionally as the site changes.

Nightmare / Phosani's calculation

Each unique's listed rarity (e.g. 1/750 for the Inquisitor's mace) is the item's real per-kill chance, taken live from the wiki's drop table. On Phosani's Nightmare (solo) every roll belongs to you, so that rarity is used directly.

On the regular Nightmare (5-man), that same per-kill chance is for the whole party — when it hits, only one random party member (weighted by damage) actually receives the item. So your personal expected kills to land it is the listed rarity × 5 (e.g. 750 × 5 = 3,750 kills), which is what the time estimate on this page uses.

Is PNM actually faster for uniques?

Yes — Phosani's Nightmare (PNM) is substantially better for farming uniques, even compared with a regular 5-man Nightmare team. The important distinction is uniques per player, not just the boss's raw drop table.

Bottom line for the unique grind: PNM >>> 5-man Nightmare. A 5-man team is mainly attractive because it's chill, social and easier — not because it's efficient for your own Inquisitor/orb.

← All bosses
Phosani's Nightmare
Phosani's Nightmare
Boss version
Phosani's Nightmare Nightmare (5-man)
Kills per hour modifier
kills/hour

The Inquisitor's mace takes about
141 hours and 8 minutes to obtain if you are exactly on droprate.

Expected kills
1,129
Expected kills on drop rate
Expected time to obtain
141h 8m
at 8 kills/hour (average)

Loot from 1,129 kills

Loading prices…
Item Quantity Price (ea) Total value
Total loot value—