OSRS Barrows Calculator
What a Barrows chest is worth at live prices, the reward potential worth stopping at, the chance of every piece and the chests to finish the sets you still need.
Reward potential 668 of 1,012
What a chest gives
| Reward | Each roll | Chance a roll | A chest | Value |
|---|
Where to stop killing
| Reward potential | Reaches | Loot a chest |
|---|
Barrows pieces
Tick the pieces you already have. Each piece only comes from a chest where its brother was killed.
| Piece | Price | Chance a chest |
|---|---|---|
| Ahrim the Blighted | ||
| — | — | |
| — | — | |
| — | — | |
| — | — | |
| Dharok the Wretched | ||
| — | — | |
| — | — | |
| — | — | |
| — | — | |
| Guthan the Infested | ||
| — | — | |
| — | — | |
| — | — | |
| — | — | |
| Karil the Tainted | ||
| — | — | |
| — | — | |
| — | — | |
| — | — | |
| Torag the Corrupted | ||
| — | — | |
| — | — | |
| — | — | |
| — | — | |
| Verac the Defiled | ||
| — | — | |
| — | — | |
| — | — | |
| — | — | |
Finishing your collection
| Chests | Chance done | Time |
|---|
Repairing Barrows equipment
What a worn piece costs to repair at an NPC such as Bob in Lumbridge, or yourself at an armour stand in your house, which is cheaper the higher your Smithing.
| Slot | NPC | Armour stand | Saved |
|---|
How lucky you have been
Chances are exact. A chest rolls once, plus once for each brother killed. Each roll is a Barrows piece 1 time in 102 with all six brothers killed (1 in 392 with one), drawn from the pieces of the brothers you killed and never the same piece twice in one chest. Otherwise the roll is a number from 1 to your reward potential, which picks the item and how many. Values are today's Grand Exchange instant-sell prices after the 2% tax; supplies are bought at instant-buy. Elite clues are counted, not priced. The pace is 12 chests an hour unless you type your own. Checked against the OSRS Wiki on 17 October 2026.
How many brothers to kill
Every brother you kill adds a roll and makes each roll likelier to be a piece, but spreads the pieces over four more items. With all six a chest gives a piece about 1 time in 15. If you only want one brother's pieces, killing just him makes a given piece a little under half as likely a chest, so it only pays when a run is that much quicker.
| Brothers | Rolls | Piece a roll | Piece a chest | One given piece |
|---|---|---|---|---|
| 1 | 2 | 1/392 | 1/196.25 | 1/784 |
| 2 | 3 | 1/334 | 1/111.67 | 1/890.67 |
| 3 | 4 | 1/276 | 1/69.38 | 1/828 |
| 4 | 5 | 1/218 | 1/44 | 1/697.6 |
| 5 | 6 | 1/160 | 1/27.09 | 1/533.33 |
| 6 | 7 | 1/102 | 1/15.01 | 1/349.71 |
Reward potential
Reward potential is the combat levels of everything you killed in the run, counted up to 1,000, plus 2 for each brother. The six brothers come to 656, so after all six it takes 344 more from the tunnels: 5 skeletons, giant crypt rats or giant crypt spiders, 7 bloodworms or crypt spiders, or 8 crypt rats. A roll that is not a piece picks a number up to your reward potential, so a higher potential unlocks better items and bigger stacks, but it also makes bolt racks possible, which are often worth less a roll than blood runes. The table below is what each item gives.
| Reward | From | Each roll | With the diary |
|---|---|---|---|
| Coins | 2 | 2–758 | 2–758 |
| Mind rune | 381 | 253–336 | 379–504 |
| Chaos rune | 506 | 112–139 | 168–208 |
| Death rune | 631 | 70–83 | 105–124 |
| Blood rune | 756 | 37–43 | 55–64 |
| Bolt rack | 881 | 35–40 | 35–40 |
| Loop half of key | 1,006 | 1 | 1 |
| Tooth half of key | 1,009 | 1 | 1 |
| Dragon med helm | 1,012 | 1 | 1 |
Repairs
A piece of Barrows equipment lasts 15 hours of fighting: it loses a point every 54 seconds in combat, 1,000 points in all, and changes its name at every 250. An NPC charges for each point used, by slot. An armour stand in your house takes 1% off for every 2 Smithing levels, so about half at 99.
| Slot | A point | NPC | Stand at 1 | Stand at 99 |
|---|---|---|---|---|
| Helm | 60 | 60,000 | 59,700 | 30,300 |
| Body | 90 | 90,000 | 89,550 | 45,450 |
| Legs | 80 | 80,000 | 79,600 | 40,400 |
| Weapon | 100 | 100,000 | 99,500 | 50,500 |
Elite clues
Each roll has a 1 in 200 chance of an elite clue scroll, and a chest never gives more than one, so seven rolls come to about 1 in 29. With the elite combat achievements the chance is 1 in 190 a roll, about 1 in 27.6 a chest.
Update history
Every change to this calculator
- Calculator added