Raids Drop Calculator
Calculate expected loot value per raid with live prices.
Unique Chance / Raid
3.46%
1 in 29 raids
Avg Unique Value
76.9m
Weighted average
Expected GP / Raid
2.7m
From unique drops only
Chambers of Xeric Unique Drop Table
| Item | GE Price | Weight | If Unique | Prob / Raid | EV / Raid |
|---|---|---|---|---|---|
| Dexterous prayer scroll | 20.6m | 20/69 | 29.0% | 1.002% | 206.3k |
| Arcane prayer scroll | 5.2m | 20/69 | 29.0% | 1.002% | 51.8k |
| Twisted buckler | 14.0m | 4/69 | 5.8% | 0.200% | 28.1k |
| Dragon hunter crossbow | 39.9m | 4/69 | 5.8% | 0.200% | 80.0k |
| Dinh's bulwark | 14.3m | 3/69 | 4.3% | 0.150% | 21.6k |
| Ancestral hat | 60.7m | 3/69 | 4.3% | 0.150% | 91.2k |
| Ancestral robe top | 127.5m | 3/69 | 4.3% | 0.150% | 191.7k |
| Ancestral robe bottom | 90.0m | 3/69 | 4.3% | 0.150% | 135.3k |
| Dragon claws | 44.5m | 3/69 | 4.3% | 0.150% | 66.9k |
| Elder maul | 104.3m | 2/69 | 2.9% | 0.100% | 104.6k |
| Kodai insignia | 69.0m | 2/69 | 2.9% | 0.100% | 69.2k |
| Twisted bow | 1.6b | 2/69 | 2.9% | 0.100% | 1.6m |
| Total Expected Value per Raid | 3.46% | 2.7m | |||
Chambers of Xeric Drop Mechanics
- Your personal points determine your unique drop chance: points / 867,500.
- At 30,000 points, you have a 3.46% chance per raid.
- If a unique is rolled, the specific item is selected from the weighted table above.
- Higher-value items like Twisted bow have lower weights (2/69).
- Expected values shown are from unique drops only; regular loot is not included.
How Raids Loot Value Is Calculated
Chambers of Xeric (CoX) and Theatre of Blood (ToB) each have a unique drop table with weighted probabilities. In CoX, your chance of receiving a unique scales with total contribution points — roughly 1 in 30 per 30,000 points for any unique. The specific unique is then rolled from the drop table, where items like the Twisted Bow and Ancestral pieces have different weights.
In ToB, the team has approximately a 1/9.1 chance per completion for a unique drop, which is then assigned to a random team member. ToB uniques like the Scythe of Vitur and Sanguinesti Staff are among the most valuable items in the game, making ToB the higher expected-value raid for experienced teams. The calculator uses drop weights to compute expected GP per raid at current GE prices.
Expected value per raid helps you compare raids objectively. A 30-minute CoX run might have lower expected value than a 25-minute ToB run, but CoX is more accessible and provides consistent supply drops alongside the unique chance. Use the Flip Finder to track margins on raid uniques if you are deciding when to sell a drop, and the Money Making Guide for other high-level GP methods.
Strategy Tips for Raid Loot
Team size directly impacts your expected value per raid. In CoX, smaller teams (3-5 players) give each player a larger share of the total contribution points, increasing individual unique chances. Solo CoX has the highest individual drop rate but requires significant skill and gear. In ToB, 4-player teams complete faster than 5-player teams while splitting loot fewer ways.
When you receive a valuable unique drop, resist the urge to sell immediately. Prices for raid uniques often spike after drop rate changes or meta shifts, and can recover after initial selling pressure. Track the item's price history on the Flip Finder and consider holding for a price recovery if the item recently crashed.
Common Mistakes to Avoid
- Panic-selling after a drop — Raid uniques are rare and valuable. Selling immediately after receiving a drop often means selling at a local low as others do the same. Check price trends and consider holding.
- Not tracking average value over time — Expected value per raid is a long-term average. Individual sessions will vary wildly. Track your total loot over hundreds of completions to see if you are above or below the expected rate.
- Ignoring supply costs — Raids consume potions, food, and runes. Subtract these costs from your loot value to get true GP/hr. CoX supply costs are lower, while ToB can consume significant resources per attempt.
Frequently Asked Questions
What is the expected loot value per raid in OSRS?
Expected loot value depends on team size and completion time. For Chambers of Xeric (CoX), the average unique drop value is weighted by your contribution points. Theatre of Blood (ToB) splits loot among the team. This calculator shows expected GP per raid using live GE prices for all unique drops.
What are the CoX vs ToB drop rates?
In CoX, unique drop chance scales with total points earned (roughly 1/30 per 30,000 points for any unique). In ToB, unique drops are approximately 1/9.1 per completion for the team (split among players). ToB has fewer but higher-value uniques on average.
Which raid is more profitable, CoX or ToB?
It depends on your team and completion speed. ToB generally has higher GP/hr for experienced teams due to faster completions and valuable uniques like Scythe of Vitur. CoX is more accessible and has consistent loot from supplies. Check the calculator for current values based on live prices.
Is it better to do small or large raid teams?
Smaller teams (3-5 players) generally yield higher expected value per person in CoX, since contribution points are split fewer ways. In ToB, 4-player teams are often optimal — faster completions than 5-man with better loot splits. However, smaller teams require higher individual skill and gear.