OSRS Inferno Calculator
All 69 Inferno waves and what each spawns, the time and supplies to your infernal cape, your Jal-Nib-Rek chance on and off task, and the Tokkul.
Time and supplies to the cape
| Attempts | Time | Supplies |
|---|
Every wave and what it spawns
| Wave | Spawns | Kills | Hitpoints | Minutes by its end |
|---|
The monsters
Every monster in the Inferno, the waves it first shows up on, and how many a run holds before Zuk and in his wave.
| Monster | Level | Hitpoints | Max hit | From wave | Waves 1 to 68 | Wave 69 |
|---|---|---|---|---|---|---|
| A run |
Supplies for one run
| Item | A run | Each | Cost |
|---|---|---|---|
| A full run | |||
| A failed attempt |
Your chance of Jal-Nib-Rek
| Roll | Chance | On average | Half get it by |
|---|
What your Zuk kills should have given
Type your TzKal-Zuk kill count, or load it from the hiscores, with how many were on a Slayer task and how many capes you have handed in.
Tokkul
| Completions | Tokkul |
|---|
Slayer experience on a task
| Monster | Kills | Each | Experience |
|---|---|---|---|
| A completion | |||
| A task |
What an infernal cape is for
The cape cannot be traded or sold to a shop, so it has no price of its own. These are its uses and what each costs.
| Use | What it does | Costs |
|---|
A run is 69 waves, and a death sends you back to wave 1. On Hardcore Worlds, open since 4 November 2026, a death in the Inferno is not safe and costs your character its one life. The default full run takes 90 minutes, marked with a ~; type your own time to replace it. Time through a run follows the Hitpoints of the monsters cleared, so a failed attempt counts the share of a full run that its waves hold, also marked with a ~. Zuk's wave counts his Jad and its healers, the four Zuk healers and two sets of a ranger and a mager. A full run drinks every potion in your inventory and casts Ice Barrage once a wave before the Jads; a failed attempt uses the same share of them as of the time. Darts, arrows, scales and charges are not counted, and a Kodai wand's setups need no water runes. Supplies are priced at what they cost to buy right now. A failed attempt also pays some Tokkul, which is not counted here. Figures checked against the OSRS Wiki on 26 October 2026.
How many waves are in the Inferno?
There are 69 waves. Waves 1 to 66 are the regular monsters, wave 67 is a single JalTok-Jad, wave 68 is three Jads at once, and wave 69 is TzKal-Zuk. Every wave up to 66 starts with three nibblers, which go for the three pillars, and a wave of six nibblers comes just before each new monster joins the rotation. Once a monster has appeared it stays in every wave after it, and a monster only comes in twos after every monster before it has.
| Monster | First wave | Hitpoints | Level |
|---|---|---|---|
| Jal-Nib (Nibbler) | 1 | 10 | 32 |
| Jal-MejRah (Bat) | 1 | 25 | 85 |
| Jal-Ak (Blob) | 4 | 40 | 165 |
| Jal-ImKot (Meleer) | 9 | 75 | 240 |
| Jal-Xil (Ranger) | 18 | 125 | 370 |
| Jal-Zek (Mager) | 35 | 220 | 490 |
| JalTok-Jad (Jad) | 67 | 350 | 900 |
| TzKal-Zuk | 69 | 1,200 | 1,400 |
A blob splits into three small blobs when it dies, one for each combat style. A mager can bring a dead monster back once at half its Hitpoints, so a wave can hold more kills than it spawns. Any pillar still standing when the last monster of wave 66 dies collapses and hits anyone next to it. The Inferno solver takes a wave's spawn and gives the safe tiles and the order to clear it.
Zuk's wave
Zuk has 1,200 Hitpoints and cannot be reached in melee, and his attack can hit 148, so you stay behind the moving shield. A ranger and a mager spawn behind you after the shield's first full sweep and again every 3 minutes 30 seconds, and they attack the shield until you hit them. At 480 Hitpoints a Jad spawns, with three healers of its own at half health, and at 240 Zuk speeds up and calls four healers that throw lava once you attack them.
Inferno questions
What does it cost to get in? One fire cape, given to TzHaar-Ket-Keh the first time. After that you can go in as often as you like. You cannot restock between waves, but you can pause between them by logging out.
What do I get for finishing? The infernal cape, 16,440 Tokkul (32,880 with the elite Karamja Diary) and a 1 in 100 chance of Jal-Nib-Rek, or 1 in 75 on a Slayer task. Each cape you give back to TzHaar-Ket-Keh is another 1 in 100, so a completion with the cape handed in is about 1 in 50, and about 1 in 43 on a task. The Tokkul calculator shows what the Tokkul buys. The achievement diaries calculator lists every task of the elite Karamja Diary.
Can I do it on a Slayer task? Yes, once you have killed Zuk off task. With the Hot Stuff unlock a TzHaar task can be swapped for Zuk, and every monster in the run gives Slayer experience. A task is one kill, two with the master combat achievements and three with the grandmaster ones. Dying ends the task.
How rare is the pet compared with other bosses? The pet calculator ranks Jal-Nib-Rek against every other pet, and the Colosseum calculator covers the other wave challenge with a cape-slot reward.
Update history
Every change to this calculator
- Noted that a death in the Inferno is not safe on Hardcore Worlds.
- Calculator added