How to Make an XP / Mob Farm in Minecraft — Complete Guide (2026)

🚨 TL;DR — Just Want the Quick Setup?

Already found a dungeon spawner and need the steps fast? Here you go:

• Light up the spawner immediately with torches so nothing kills you while you build
• Expand the room to 9×9 blocks with the spawner centered, 5 blocks tall
• Dig trenches along two opposite walls, 1 block deep
• Place water in the two far corners — it flows and pushes mobs to a center hole
• Dig a drop shaft 22 blocks straight down from that center hole
• Build a killing chamber at the bottom — hoppers into a chest below, slabs on top of hoppers
• Remove all torches from the spawn room — darkness triggers spawning
• Stand within 16 blocks of the spawner to keep it active
• Light up all caves within 128 blocks of your AFK spot — the mob cap is your #1 enemy
• Kill mobs with one hit to get XP — don’t let the farm auto-kill them (or upgrade to a Trident Killer for true AFK)

Full explanation, troubleshooting, and advanced builds below. All mechanics verified for Java Edition 26.2 and Bedrock Edition 26.40.

---

Quick Fact: XP (experience points) in Minecraft power enchanting, anvil repairs, and the Mending enchantment. Without a steady XP source, late-game progression slows to a crawl. A good mob farm doesn’t just give you levels — it gives you bones, arrows, gunpowder, rotten flesh, string, and iron on autopilot while you stand in a safe room doing almost nothing.

---

Why You Actually Need an XP Farm

Here’s the honest truth about XP in Minecraft: casual play gives you just enough to enchant occasionally, but never enough to do it consistently. Every time you die, your levels are gone. Every time you repair a good tool at an anvil, you spend levels. Every enchantment costs levels you spent an hour earning.

A mob farm solves this permanently. Once it’s built, you have a tap you can turn on whenever you need XP — and it produces loot at the same time. It’s one of the highest-value builds in the entire game relative to the materials it costs.

The good news is that the simplest version — a dungeon spawner farm — costs almost nothing to build. No redstone, no complex mechanics, no rare materials. Just a hole in the ground and a bucket of water.

---

XP Mob Farm in Minecraft

First, Understand How Mob Spawning Actually Works

Before building anything, you need to know the rules. Ignoring these is why most people’s farms produce nothing.

The Three Critical Numbers

Distance	What It Means
Under 24 blocks	Mobs cannot spawn — too close to the player
24 to 128 blocks	The active spawning zone — this is where your farm should be
Over 128 blocks	Mobs despawn instantly — your farm shuts down if you wander too far

Your AFK spot needs to be at least 24 blocks from the spawning floor, but no more than 128 blocks. For a spawner farm, staying 24–32 blocks from the spawner itself is the sweet spot.

Light Levels — The Spawning On/Off Switch

Hostile mobs need a light level of 0 to spawn in Java Edition. In Bedrock, they spawn at light level 7 or lower. This means:

• Your spawn room must be completely dark — even a single forgotten torch shuts down spawning
• Any dark area within 128 blocks of you competes with your farm for the mob cap
• Lighting up surrounding caves isn’t optional — it’s the difference between a farm that trickles and one that roars

The Mob Cap — The #1 Reason Farms Fail

Minecraft limits how many hostile mobs can exist at once. In Java Edition, the global mob cap for hostile mobs is 70 per player (scaled by loaded chunks). In Bedrock, the cap is 200 globally.

When that cap is full — which happens the moment you’re surrounded by unlit caves — your farm produces zero mobs. The game is busy spawning zombies in the dark ravine 80 blocks below your feet instead of feeding your farm.

The single most common reason a mob farm doesn’t work: Unlit caves within 128 blocks filling the mob cap. Spend 20 minutes lighting every dark space in range and watch your farm transform overnight.

Spawner-Specific Rules

If you’re using a natural dungeon spawner (the best early-game option):

• The spawner activates when you’re within 16 blocks horizontally and 10 blocks vertically
• It spawns mobs in a 9×3×9 block volume centered on itself — 4 blocks in each horizontal direction and 1 block above/below the spawner block
• The spawner will not attempt another spawn cycle if 6 or more mobs of the same type are within that 9×3×9 volume — get mobs out of that zone fast or spawning stalls completely
• Spawners have a 10–40 second cooldown between spawn attempts (200–799 ticks)
• The spawner never runs out — it generates mobs indefinitely as long as conditions are met

---

Types of XP / Mob Farms — Which One Is Right for You?

Not all mob farms are the same. The right one depends on where you are in the game and what you want out of it.

Farm Type	Game Stage	Materials Needed	XP Rate	Loot	Complexity
Spawner Farm	Early-Mid	Basic (wood, water, hoppers)	Good	Bones, arrows, flesh, string	Low
Darkroom Tower	Mid	Lots of blocks, no spawner needed	Very Good	Mixed mob drops	Medium
Gold / Piglin Farm	Mid-Late (Nether)	Gold blocks, Nether portal	Excellent	Gold, XP	High
Enderman Farm	Late (End)	End-specific materials	Excellent	Ender pearls	High
Raid Farm	Late	Complex, villager setup	Exceptional	Emeralds, totems, XP	Very High
Furnace / Smelting Farm	Any	Furnaces, fuel, hoppers	Passive	Smelted resources	Low

This guide covers the two builds every player should know: the Spawner Farm (best early-game, lowest cost) and the Darkroom Tower (no spawner required, scales forever). The late-game farms are worth a dedicated guide of their own — see our Minecraft Gold Farm guide when you’re ready to graduate.

---

Build 1: The Spawner XP Farm (Best Starter Build)

This is the farm that every Minecraft player should build first. It’s cheap, fast, reliable, and doesn’t need a single piece of redstone. The only requirement is finding a natural dungeon spawner — and once you do, you’ll wonder how you ever played without it.

Step 1: Find a Dungeon Spawner

Dungeon spawners are found in small underground rooms made of cobblestone and mossy cobblestone, usually between Y=0 and Y=50. They spawn zombies, skeletons, or spiders.

How to find one:

• Explore caves and ravines — dungeon rooms are often accessible from natural cave systems
• Listen for mob sounds coming through walls while mining — if you hear groaning or rattling in a specific direction but can’t see anything, there’s often a spawner room nearby
• Look for mossy cobblestone in cave walls — it’s almost always a dungeon
• While diamond mining at depth, dig horizontally when you hear unusual mob density nearby
• New in 26.2 (Chaos Cubed): Be aware that the new sulfur caves biome generates underground, mostly below Y=0. If you’re spelunking at depth and hit hot springs, cinnabar blocks, or sulfur cubes, you’re in sulfur caves — not standard cave terrain. Dungeon spawners do not generate specifically in sulfur caves, so if you’re hunting spawners, focus on standard cave systems at Y=0 to Y=50.

Important: The moment you break into a dungeon room, immediately place torches on the spawner block itself and all over the walls. This stops mobs from spawning while you build. Do this before anything else — entering a dark dungeon room mid-build is chaotic.

Spawner types and what they drop:

Spawner Type	Key Drops	XP per Kill	Notes
Zombie	Rotten flesh, iron ingots, carrots, potatoes	5 XP	Most common — great all-rounder. Baby zombies have redesigned models in 26.1 (Tiny Takeover) with clearer hitboxes, but are still smaller than adults.
Skeleton	Bones, arrows, bows	5 XP	Arrows are incredibly useful mid-game
Spider	String, spider eyes	5 XP	Harder to funnel — needs modified design
Cave Spider	String, spider eyes	5 XP	Poisonous — only attempt with good armor and a shield
Blaze	Blaze rods	10 XP	Found in Nether fortresses — very valuable. See our Blaze farm guide.

Step 2: Prepare the Spawn Room

With torches placed and mobs stopped, it’s time to build your spawn chamber.

1. Expand the room to exactly 9×9 blocks with the spawner block sitting in the center. Dig 4 blocks out from the spawner in every horizontal direction
2. Set the height to 5 blocks tall — 2 blocks above the spawner, 2 blocks below the spawner level
3. Smooth the floor — make sure the floor is flat and even, one level below the spawner
4. Remove chests if they’re in the way, but keep any loot you find first

Why 9×9? The spawner generates mobs in a 9×3×9 volume centered on itself. Your room matches this exactly, so every block of the spawn volume is usable. Making the room larger doesn’t increase spawns — the spawner still only places mobs within its fixed 9×3×9 range.

Step 3: Build the Water Funnel

This is the transport system that moves mobs from the spawn room to the drop shaft — and the key to keeping mobs out of the spawner’s 9×3×9 volume so it never stalls.

1. Dig a 1-block deep trench along two opposite walls of the 9×9 room (left wall and right wall)
2. Dig a center channel connecting the two trenches, leading to a 1×1 hole at the far end of the room
3. Place water source blocks in the two far corners of the room — the water flows naturally toward the center hole, pushing every mob that spawns directly into the drop shaft

Water Placement Rule: Water flows a maximum of 8 blocks. For a 9×9 room, place sources at opposite corners and they’ll meet in the middle perfectly, sweeping everything into your funnel. If mobs get stuck, check that your trenches are exactly 1 block deep and the floor is level. Getting mobs out of the 9×3×9 spawn zone quickly is also what prevents the spawner from stalling — the water does double duty here.

Step 4: Dig the Drop Shaft

From the center hole where your water funnel ends, dig straight down exactly 22 blocks. This is the magic number.

Why 22 blocks? Most mobs (zombies, skeletons, spiders) have 20 HP. A 22-block fall deals exactly 19 HP of fall damage, leaving them with 1 HP. One punch from your fist finishes them — and that final kill by the player is what triggers the XP drop. Let the farm auto-kill them and the XP disappears.

Drop Height	Mob HP Remaining	Kill Method
22 blocks	1 HP — one fist punch	XP + full loot drops
23-24 blocks	Dead on arrival	Full loot, zero XP
20 blocks	2–3 HP	One weak sword hit
Under 18 blocks	Multiple hits needed	Slower XP gathering

Step 5: Build the Killing Chamber

At the bottom of your 22-block drop shaft, create your collection and kill area:

1. Dig a 2-wide, 2-tall room at the base of the shaft — enough space to stand comfortably
2. Place two hoppers side by side on the floor directly under where mobs land, both feeding into a chest underneath
3. Place slabs on top of the hoppers — this creates a half-block surface. Mobs land on it with their feet exposed just enough for you to hit, but they can’t move toward you or escape
4. Add a chest behind the hoppers to collect all drops automatically
5. Optional: Add a second chest and hopper for overflow — skeleton farms fill up fast with arrows and bones

Baby Mob Hitbox Note (Updated for 26.1 — Tiny Takeover): The Tiny Takeover update (Java 26.1 / Bedrock 26.10, released March 24, 2026) completely redesigned baby mob models. Every baby mob — including baby zombies — now has its own distinct model with rounder proportions, replacing the old “scaled-down adult” approach. Hitboxes were updated alongside the new models, making baby zombies more consistent to hit. However, they remain smaller than adult mobs and can still occasionally slip through the slab gap in a kill slot. If baby zombies are escaping, place a trapdoor angled inward above your kill slot. It blocks their escape route without affecting regular-sized mobs.

Step 6: Light Control and Activation

1. Remove every torch from inside the spawn room — every single one. The room must be at pitch black (light level 0) for spawning to happen
2. Keep torches in your drop shaft and killing chamber so you can see what you’re doing
3. Light up all caves within 128 blocks — this is where most people skip and then wonder why their farm is slow
4. Stand 24–32 blocks from the spawner in your killing chamber to keep the spawner active without being close enough to block spawning

Mob Cap Fix: If mobs spawn slowly or not at all, do this: enable coordinates, note your Y level, then spend 20 minutes caving and placing torches in every dark space within 128 horizontal blocks of your AFK spot. The improvement is almost always immediate and dramatic.

Full Spawner Farm Checklist

Step	Task	Done When…
1	Found dungeon spawner	Room with spinning mob cage located
2	Torches on spawner immediately	No mobs spawning while building
3	Room expanded to 9×9, 5 blocks tall	Spawner floating in center of empty room
4	Water trenches dug	1-block channels along two walls + center channel
5	Water sources placed in corners	Mobs being pushed to center hole
6	22-block drop shaft dug	Vertical shaft under center hole
7	Killing chamber built	2×2 room at base with headroom
8	Hoppers + slabs + chest installed	Auto-collection working
9	All torches removed from spawn room	Complete darkness inside
10	Caves within 128 blocks lit up	Mob cap freed up for your farm
11	Standing 24–32 blocks from spawner	Spawner active, mobs arriving

---

Build 2: The Darkroom Tower Farm (No Spawner Required)

If you haven’t found a spawner, or you want a farm that produces every mob type (for mixed drops), a darkroom tower is the answer. It requires more materials but works anywhere in the world and can be scaled up indefinitely.

How It Works

Instead of using a spawner, you build large dark platforms high in the sky. Mobs spawn naturally on the platforms (since they’re dark and have valid block surfaces), walk off the edges into water channels, get funneled to a central drop shaft, and fall to your killing floor below.

The key advantage of building high in the sky: everything below your AFK height is outside the 128-block spawn zone, so the mob cap is entirely yours. No competing cave spawns, no lighting required underground.

Basic Darkroom Tower — What You Need

Material	Quantity	Purpose
Any solid blocks (cobblestone ideal)	500–1000	Platforms, walls, and chute
Water buckets	8–12	Flow channels across platforms
Hoppers	4–8	Item collection at kill floor
Chests	2–4	Storage
Signs or trapdoors	16	Stop water flowing into drop shaft
Torches	64	Spawn-proof areas you don’t want mobs
Ladders or scaffolding	80+	Getting up to build height

Build Steps (Simplified)

1. Choose your height — build the spawning platforms at least 24 blocks above your AFK spot, and as high as you can comfortably build (higher = fewer competing spawns below)
2. Build spawning layers — flat, dark platforms at least 8×8 blocks, surrounded by half-slab lips so mobs walk off the edge without jumping back
3. Add water channels — water along the back wall pushes mobs toward the drop edge. Place signs at the shaft entrance to stop water going down while mobs fall through
4. Connect to a 22-block drop shaft — same as the spawner farm
5. Build the killing floor — identical to spawner farm: hoppers, slabs, chest below
6. Add more layers — each additional dark platform directly increases your mob spawn rate. Most efficient designs have 4–10 layers stacked vertically

Spider Problem: Spiders require a 3×3 space to spawn. If you build your platforms narrower than 3 blocks wide (like a 2-block-wide walkway), spiders can’t spawn there. This is called “spider-proofing” and it’s a useful trick if you don’t want to deal with them clogging your drop chute.

---

What Each Mob Farm Produces — The Loot Value Guide

Half the reason to build a mob farm isn’t even the XP — it’s the passive loot. Here’s what each farm type generates and why it matters:

Mob	Key Drops	Why They Matter
Zombie	Rotten flesh, iron ingots, carrots, potatoes	Iron ingots are excellent mid-game. Carrots/potatoes for farming
Skeleton	Bones, arrows, bows	Bone meal for farming, infinite arrow supply for bows
Creeper	Gunpowder	TNT crafting, fireworks — creepers are the only renewable gunpowder source
Spider	String, spider eyes	String for bows, fishing rods, leads, wool; eyes for potions
Enderman	Ender pearls	Teleportation, Eye of Ender for finding strongholds
Blaze (Nether)	Blaze rods	Brewing stands, blaze powder for potions — essential for progression. See our Blaze farm guide
Zombie Piglin	Gold nuggets/ingots	Gold for powered rails, golden tools, bartering with Piglins. See our Gold farm guide

Looting III on your sword dramatically increases drop rates from every mob. One enchantment effectively turns your farm’s output into a triple-drop machine. It’s the second most impactful enchantment for farms after Mending (which keeps your sword alive on farm XP).

---

Java vs Bedrock — Key Differences That Affect Farm Design

This is the section most guides skip, and it causes a lot of frustration when a farm that works on one version produces nothing on the other.

Mechanic	Java Edition	Bedrock Edition
Spawn light level	Light level 0 required	Light level 7 or lower
Mob cap (hostile)	70 (scales with loaded chunks)	200 global
Spawn radius	Fixed 128-block sphere	Tied to Simulation Distance setting
AFK spot height	High Y-level is optimal	Build at build height limit for best rates
Baby mob models (Updated 26.1)	Fully redesigned distinct models — new hitboxes. Trapdoor fix still recommended for kill slot	Same Tiny Takeover overhaul applied (Bedrock 26.10) — test your kill slot design after updating
Water on scaffolding	Not effective for mob transport	Very effective — Bedrock-exclusive technique
Spider spawning	Standard rules apply	Slightly different — test your design
Sulfur caves (26.2 / 26.30)	New underground biome — can compete for mob cap if unlit. Torch sulfur cave openings near your farm	Same biome added in 26.30 — same mob cap concern applies

Bedrock-Specific Tip: In Bedrock Edition, your Simulation Distance setting directly controls how large your spawn zone is. A Simulation Distance of 4 chunks gives you a ~44-block radius. Set it to 6 or higher (and keep it there) for mob farms to function correctly. This setting matters more on Bedrock than any single design choice.

---

Common Mob Farm Mistakes and How to Fix Them

Problem	Almost Certainly Caused By	Fix
Mobs not spawning at all	Peaceful difficulty, or torches left in spawn room	Check difficulty settings; remove every torch from spawn chamber
Very slow spawn rate	Mob cap filled by unlit caves nearby — including new sulfur caves (26.2) if present in range	Light up all dark areas within 128 blocks of your AFK spot, including any sulfur cave entrances
Mobs spawning but not falling	Water funnel not reaching the drop hole	Check water flow — source blocks in wrong corners, or trenches wrong depth
Spawner cycles slowly even with dark room	6+ mobs still in the 9×3×9 spawn volume — spawner stalled	Improve water funnel speed; ensure trenches flush mobs out of the spawn zone before the next cycle
Mobs dying before you can kill them	Drop shaft too long (more than 22–23 blocks)	Reduce drop height by raising the killing chamber floor
No XP dropping	Mobs dying automatically, not from player hits	You must deliver the final blow. Stand at kill slot and hit them — or build a Trident Killer for auto player-kill (see below)
Baby zombies escaping	Smaller hitbox — Tiny Takeover (26.1) gave them new models but they remain smaller than adults	Add a trapdoor angled inward above the kill slot
Farm works then suddenly stops	You wandered more than 128 blocks away	Always AFK within 128 blocks of the spawner/spawn platforms
Spiders clogging the drop chute	Spider bodies are wider than 1 block	Expand drop chute to 2×2 for spider farms, or spider-proof platforms with narrow widths
Cave spiders poisoning you	Their attack bypasses armor	Always bring milk (removes poison) and a shield to a cave spider farm
Items not collecting in chest	Hoppers pointed wrong direction	Hoppers must point toward the chest, not away from it

---

How to Get Maximum XP From Your Farm

Building the farm is one thing. Getting the most out of it is another. Here are the habits that separate efficient XP farmers from casual ones:

• Use a sword with Looting III — increases drops from every mob. More loot = more value per session
• Use a sword with Mending — your sword repairs itself using the XP you’re generating. You’ll never need to craft another one. Getting Mending from a Librarian villager is the most reliable method
• Use Sweeping Edge (Java only) — hits all nearby mobs in your kill chamber at once instead of one at a time, dramatically speeding up XP collection
• Don’t use a strong sword — you want mobs to stay at 1 HP so one punch finishes them. A maxed diamond sword one-shots most mobs and wastes the 1-HP mechanic. Use your fist or a weak tool for best XP-per-second
• AFK strategically — let mobs stack up in the kill chamber while you’re away, then come back and clear them all at once in a burst of XP
• Upgrade to a Trident Killer (Java advanced) — once you have a trident, a Trident Killer mechanism uses spinning tridents to deliver killing blows automatically while still counting as player kills, giving full XP completely AFK. It’s a significant upgrade that turns any farm semi-automatic. Basic redstone knowledge is required to build one
• Sort your drops — once your farm matures, add a hopper-based item sorter to separate bones, arrows, flesh, and string into separate chests. Keeps inventory management sane

---

XP Farm Uses — What to Spend Your Levels On

Once the farm is running, you’ll have more XP than you know what to do with. Here’s the priority order that makes your XP go furthest:

Priority	What to Do With XP	Why
1	Enchanting Table — Level 30 enchants	Protection IV, Fortune III, Efficiency V on your core tools
2	Mending on your best tools	Infinite durability — your diamond pickaxe never breaks again
3	Anvil repairs	Fix tools without losing enchantments
4	Fortune III on diamond pickaxe	Directly multiplies diamond output — pairs perfectly with our diamond hunting guide
5	Anvil name tags	Name a mob to prevent despawning (useful for special farms). Name tags are now craftable since 26.1 — see our name tag crafting guide
6	Librarian villager trading	Buy specific enchanted books — far more reliable than RNG. See our villager trading tiers guide

The XP Loop: Your mob farm generates XP → use XP to get Mending on tools → Mending uses farm XP to repair tools → tools last forever → back to farming. Once you’re in this loop, the resource economy of Minecraft becomes trivially easy.

---

FAQs

Now That You Have Infinite XP — What’s Next?

XP changes everything in Minecraft. Once enchanting becomes effortless, your whole progression accelerates. Here’s where to channel all of it:

• How to Get Mending in Minecraft — the single most important enchantment for any farm setup. Get this before anything breaks
• How to Make a Gold Farm in Minecraft — the natural next farm to build. Passive gold and some of the best XP rates in the game once you reach the Nether
• How to Make a Blaze Farm in Minecraft — Blaze Rods power your entire potion and enchanting pipeline. Essential mid-game
• How to Find Diamonds in Minecraft — Fortune III from your enchanting table makes diamond mining dramatically more efficient
• How to Use an Enchanting Table in Minecraft — now that you have the XP, get everything out of your enchanting table
• Minecraft Redstone Basics & Circuits Guide — when you’re ready to build a Trident Killer or item sorter, start here
• Building an Automatic Farm in Minecraft — crop automation, iron golems, and more once your XP loop is stable
• How to Craft a Name Tag in Minecraft — name tags are now craftable since 26.1 (Tiny Takeover). No more hunting for them in dungeon chests — craft them with string and iron
• How to Survive Your First Night in Minecraft — still getting started? Build that survival foundation first before tackling farms
• How to Build an Underground Bunker in Minecraft — an underground base pairs perfectly with a spawner farm built into the same tunnel system
• How to Build a Floating Island Base in Minecraft — floating bases at height are ideal AFK spots for darkroom towers built below
• All Minecraft Base Builds Guide 2026 — find the base type that pairs best with the farm you just built

---

Final Thoughts

A mob farm is the pivot point of Minecraft progression. Before you have one, resources feel scarce, enchanting feels expensive, and every death stings. After you have one, the game opens up in a way that’s hard to describe until you experience it.

Build the spawner farm first — it’s cheap, it’s fast, and it works. Find a dungeon, spend 30 minutes on the design, clear the caves nearby, and you’ll have reliable XP for the rest of that world.

Then, when you’re ready, build the darkroom tower above your base. Scale it up. Add Mending to everything. Enchant freely. Repair without hesitation.

The mobs that used to kill you at night are now working for you around the clock.

That’s the real survival flex.