How to Build a Portal in Minecraft: Nether, End, and Beyond

Portals are some of the most rewarding structures in Minecraft — they're gateways to entirely different dimensions, each with its own resources, enemies, and mechanics. But building one isn't as simple as placing a door. The materials, shape, and activation method vary depending on which portal you're constructing, and a single mistake can leave you with an inert frame and no idea why it isn't working.

Here's a clear breakdown of every portal type, how each one works, and the variables that affect your experience.

The Two Main Portal Types in Minecraft

Minecraft has two primary player-built portals: the Nether Portal and the End Portal. There's also the Exit Portal in The End, but that generates automatically — you don't build it. A third structure, the Ruined Portal, appears as world-generated scenery and can sometimes be repaired rather than built from scratch.

How to Build a Nether Portal 🔥

The Nether Portal is the most commonly built portal and the one most players encounter first.

Materials You Need

• Obsidian — between 10 and 14 blocks depending on whether you include corners
• Flint and Steel (or Fire Charge) — to activate it

Obsidian is created where flowing water meets a lava source block. You can also find it in chests or near lava lakes. Mining it requires a Diamond or Netherite Pickaxe — any other tool will destroy it without dropping the block.

Building the Frame

The minimum frame is 4 blocks wide × 5 blocks tall, using 10 obsidian blocks (the corners are air). The maximum standard frame is 23 × 23 — Minecraft supports non-standard portal sizes, which is useful for building aesthetics or multi-portal hubs.

Standard minimum layout:

[O] [O] [O] [O] [O] [O] [O] [O] [O] [O] [O] [O] 

(O = obsidian, interior = air)

The two bottom corners and two top corners can be omitted if you're conserving obsidian — only the inner frame needs to be complete.

Activating the Portal

Once the frame is built, use Flint and Steel on the bottom interior blocks. The portal will fill with a purple, swirling texture. Walking through it teleports you to the Nether after a 4-second loading transition.

Key variable: In the Nether, distance is compressed at an 8:1 ratio — one block traveled in the Nether equals eight blocks in the Overworld. This affects how you plan travel routes and link portals for fast travel networks.

How to Build an End Portal

The End Portal is structurally different from the Nether Portal and significantly harder to build in Survival mode.

What You Need

• 12 End Portal Frames — cannot be crafted; found only in Stronghold libraries
• 12 Eyes of Ender — crafted from Blaze Powder and Ender Pearls

In Creative mode, you can place End Portal Frames directly from your inventory and build the portal yourself. In Survival, you locate a Stronghold (by throwing Eyes of Ender and following their trajectory), find the pre-generated portal room, and fill the empty frames with Eyes of Ender.

Building the Frame (Creative Mode)

The End Portal requires exact orientation. Each portal frame block must face inward toward the center of the portal — if even one block faces the wrong direction, the portal won't activate.

Frame shape: A 3-block-wide hollow square with 3 frames on each side (12 total), placed standing on the outside edge, all facing inward.

Inserting the 12th Eye of Ender triggers activation — the portal fills with a black starfield texture and dropping into it sends you to The End.

In Survival Mode

You're not building from scratch — you're completing a structure that already exists. The frames are fixed. Your job is to:

1. Locate the Stronghold using Eyes of Ender
2. Navigate to the portal room (avoid the Silverfish)
3. Fill all 12 frames (some may already contain Eyes of Ender when you find them)

Comparing the Two Portals

Variables That Change Your Experience 🎮

Game edition matters. Java Edition and Bedrock Edition handle portals similarly in structure, but differ in linking behavior. In Java, portal linking is more predictable and used by technical players for fast-travel systems. Bedrock can behave inconsistently with complex portal networks.

World seed and Stronghold location affect how long it takes to reach an End Portal in Survival. Some seeds place Strongholds very close to spawn; others require extensive exploration.

Player progression is the biggest factor for the End Portal specifically. Getting Blaze Powder (from Blazes in Nether Fortresses) and Ender Pearls (from Endermen) means the End Portal is gated behind Nether exploration — you can't skip straight to The End without those materials.

Ruined Portals are a shortcut worth knowing. These partially built Nether Portals appear randomly in Overworld and Nether terrain and come with a chest containing useful loot — sometimes including the Crying Obsidian or extra Obsidian needed to complete the frame.

A Note on Crying Obsidian

Crying Obsidian looks similar to regular Obsidian but cannot be used to build Nether Portals. It functions as a decorative block and a Respawn Anchor component (used in the Nether). Mixing it into your portal frame by mistake is a common early-game error that prevents activation.

Whether you're speedrunning to the End or building an elaborate fast-travel network across your Overworld, the portal you need — and how straightforward it is to build — depends entirely on where you are in your playthrough, which edition you're on, and what your base infrastructure already looks like.