Osrs Toa Calculator

by

David Chen, OSRS Mechanics Specialist

Fact-checked by the RuneScape Analyst Team. Updated for the latest TOA drop rate adjustments.

Optimize your Tombs of Amascut runs by calculating expected points and unique drop rates based on raid levels, group size, and path levels.

OSRS TOA Calculator

Estimated Results

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Unique Chance: –%

OSRS TOA Calculator Formula:

Points = Base_Points * (1 + (Raid_Level * 0.02))
Unique_Rate = Total_Points / 10,500

Formula Source: OSRS Wiki – TOA Mechanics

Variables:

  • Raid Level: The total invocation score (0–600). Higher levels exponentially increase unique drop chances.
  • Team Size: Number of players in the raid. Points are shared, but individual performance affects your split.
  • Path Level: Increased levels for Akkha, Ba-Ba, Kephri, and Zebak boost total potential points.
  • Deaths: Each death significantly penalizes your total points, drastically reducing loot potential.

Related Calculators:

What is OSRS TOA Calculator?

The OSRS TOA Calculator is a specialized tool used by Old School RuneScape players to predict the rewards from the Tombs of Amascut raid. By inputting specific raid settings—known as Invocations—players can determine their “points,” which directly correlate to the probability of receiving a “purple” (unique item) like the Tumeken’s Shadow or Osmumten’s Fang.

Understanding these mechanics is crucial for “Ironmen” and high-level raiders who want to maximize their efficiency. For example, moving from a 150 Raid Level (Entry) to a 300 Raid Level (Expert) more than doubles the unique drop chance due to the way scaling works in the Egyptian-themed raid.

How to Calculate OSRS TOA Results (Example):

  1. Determine your Raid Level (e.g., 300 for Expert).
  2. Estimate Base Room Points (approx 18k–22k for a standard solo).
  3. Apply the Raid Level Multiplier (1 + (300 * 0.02) = 7.0x multiplier on difficulty, but unique rates scale specifically).
  4. Divide final points by 10,500 to find the percentage chance of a unique drop.

Frequently Asked Questions (FAQ):

What is the best Raid Level for solo players? Level 300-400 is generally considered the “sweet spot” for skilled solo players to balance speed and unique chances.

Do deaths remove my chance of a Shadow? No, but they reduce your points, which lowers the mathematical probability of seeing any unique item.

How does Team Size affect points? Total points increase with team size, but they are split among members based on damage and participation.

What is a “Purple” in TOA? A purple light appears over the reward chest when a unique item (like Masori armor) is rolled.

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