Eye of Ender triangulation calculator for Minecraft Java Edition: throw 2 eyes from 2 spots, enter your position + yaw each time, and get the estimated stronghold X/Z — with a 2D map, chunk lookup, and a single-throw bearing estimator.
Java Edition only. Yaw comes from the F3 debug screen, which Bedrock does not have.
An Eye of Ender flies toward the nearest stronghold from its throw point. The calculator extends both flight lines and returns their intersection — an estimate, not the exact portal block.
The End portal room usually sits within ~100 blocks of where converging eyes hover. Walk to the estimate, then fine-tune with more throws.
Each throw: the eye flies ~12 blocks, then drops (80%, reusable) or shatters (20%, lost).
Two-throw triangulation
Stand still, throw an Eye of Ender, aim your crosshair at the hovering eye, and read the yaw on the F3 “Facing” line (first number in brackets). Move 100+ blocks away — roughly perpendicular works best — and repeat.
Throw 1
Throw 2
Map
Solid lines = flight direction; dashed = behind the throw. Red circle = search area (~100 blocks around the estimate).
Single-throw bearing estimator
One eye gives you a direction, not a distance. Enter the throw and an assumed travel distance to get a reference point along the bearing.
Chunk calculator
Convert any X/Z into chunk, region file, Nether coordinates and distance from origin.
How it works
Read your yaw: press F3. On the “Facing” line, e.g. Facing: south (Towards positive Z) (0.0 / 23.4), the first bracketed number (0.0) is your yaw. Aim at the hovering eye when you read it.
Two throws, one per spot: record (X, Z, yaw) at each. Spots 100+ blocks apart and roughly perpendicular give the best crossing angle.
Math: yaw → direction vector dx = −sin(yaw), dz = cos(yaw); the tool solves P1 + t·d1 = P2 + s·d2 for the intersection. Crossing angle under ~5° is flagged as unreliable, and an intersection behind a throw is flagged as a bad reading.
Dig: travel to the estimate; when thrown eyes hover and drop in one place, dig down — the portal room is below.
Worked example
X
Z
Yaw
Direction
Throw 1
0
0
−45°
(+0.707, +0.707) — SE
Throw 2
100
0
−135°
(+0.707, −0.707) — NE
Intersection: X = 50.0, Z = 50.0 — baseline 100 blocks, crossing angle 90.0°, chunk (3, 3). Press “Fill worked example” in the triangulation tab to see it live on the map.
Why an estimate, not an exact point: the eye targets the stronghold’s start area, yaw readings have ±0.1° jitter, and the portal room itself can be up to ~100 blocks from the convergence point. Two careful throws get you to the right neighborhood; the last eyes get you to the door.
Throw an Eye of Ender and note your position (X, Z) plus the yaw angle of the direction the eye flies. Move at least 100 blocks away — ideally roughly perpendicular to the first flight path — and throw a second eye. This calculator extends both flight lines and returns their intersection: the estimated location of your stronghold.
How do I read my yaw angle in Minecraft?
Press F3 (Java Edition) to open the debug screen. On the “Facing” line you will see something like “Facing: south (Towards positive Z) (0.0 / 23.4)” — the first number in brackets is your yaw (-180 to 180). Aim your crosshair at the hovering eye while reading it, then type that yaw into the calculator.
How far apart should my two throws be?
At least 100 blocks, and the second throw works best when it is roughly perpendicular to the first eye’s flight path. A wider baseline and a larger crossing angle between the two lines give a much more reliable intersection.
How accurate is the estimated stronghold location?
The intersection marks the area the two flight lines converge on — usually the stronghold’s start region. The actual End portal room can sit tens of blocks away (up to about 100). Walk to the estimate, then throw more eyes to home in on the exact spot.
What does “flight lines are nearly parallel” mean?
The two flight directions cross at an angle under about 5°, so tiny measurement errors move the intersection by hundreds of blocks. Throw again from a position that gives a wider angle between the two bearings.
What if the intersection is behind one of my throws?
The calculator warns you when the crossing point lies behind a throw (negative t or s). That usually means a yaw value was read wrong — re-aim at the eye and re-read the F3 angle — or the two eyes locked onto two different strongholds.
Can the two eyes point at different strongholds?
Yes. Every Eye of Ender targets the stronghold nearest to its own throw point. Keep both throws in the same region (within a few hundred blocks of each other) so both eyes chase the same stronghold.
How many Eyes of Ender do I need?
Two successful throws are the minimum for triangulation. Each throw has a 20% chance to shatter the eye, so bring 4–6 eyes to be safe; unbroken eyes (about 80%) drop and can be picked back up.
Does this End Portal Finder work on Bedrock Edition?
The triangulation math is edition-independent, but the yaw input comes from the Java Edition F3 debug screen, which Bedrock does not have. Scope of this tool: Minecraft Java Edition.
What are stronghold rings?
In Java Edition (1.18+) the game generates 128 strongholds arranged in concentric rings around the world origin. The first ring sits roughly 1,400–2,700 blocks from spawn — that is why eyes can send you on a long trip.
Why did the Eye of Ender fly straight down?
You are standing almost directly above the stronghold. When eyes hover and drop in the same place repeatedly, dig down carefully — the portal room is below you (watch for the silverfish spawner).
Can a single Eye of Ender throw find the stronghold?
One throw gives you a direction only — a ray, not a distance. Use the single-throw mode for a compass bearing, but you need two throws from different spots to get coordinates.
How far does an Eye of Ender fly per throw?
About 12 blocks. Then it either drops to the ground (about 80% chance, pick it up and rethrow) or shatters (about 20% chance, lost forever).
What chunk is my estimated stronghold in?
Enter the X/Z estimate into the chunk calculator: chunk = floor coordinate ÷ 16. The F3 screen shows your current chunk, so matching it against the estimate tells you exactly where to dig.
Is the result the exact End portal location?
No — it is an estimate of the stronghold area computed from two eye flight lines. The End portal frame sits inside the stronghold’s portal room, usually within about 100 blocks of where converging eyes hover. Treat the result as “dig here, then fine-tune”.
Found a wrong result? This tool is pure client-side math — if an estimate looks off, double-check the yaw was read while aiming at the hovering eye (F3 “Facing” line), and make sure both throws chased the same stronghold.
End Portal Finder — free Eye of Ender triangulation calculator for Minecraft Java Edition. Runs entirely in your browser; no data leaves your device. Not affiliated with Mojang or Microsoft.