Minecraft Conduit Calculator (Java)
A conduit turns on with 16 prismarine frame blocks and reaches 32 blocks; the full 42-block frame reaches 96 blocks and also attacks hostile mobs nearby.
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Range
96 blocks
Conduit Power for players in water or rain
Attacks hostile mobs
Yes
Only with the full 42-block frame, within 8 blocks
Frame blocks: prismarine, prismarine bricks, dark prismarine or sea lanterns, all in water.
.
Range by frame size
| Frame blocks | Range |
|---|---|
| 16 | 32 blocks |
| 21 | 48 blocks |
| 28 | 64 blocks |
| 35 | 80 blocks |
| 42 | 96 blocks |
How to use it
- Count the frame blocks around your conduit, or plan how many you'll place.
- Read the range of Conduit Power.
- Fill the frame to 42 blocks for the longest range and the attack.
- Keep the conduit and its frame in water.
How it works
The conduit's range is 16 blocks for every 7 frame blocks, so it grows as you add prismarine. With the complete frame it also damages hostile mobs within 8 blocks that are in water or rain.
Questions
What does Conduit Power do?
Underwater breathing, night vision underwater and faster mining in water, for players in range who are in water or rain.
Which blocks make a conduit frame?
Prismarine, prismarine bricks, dark prismarine and sea lanterns.
How do I make a conduit?
Craft a heart of the sea (from buried treasure) with 8 nautilus shells.
Does the conduit need to be underwater?
Yes, the conduit and the 3×3×3 space around it must be filled with water.
How big is the full frame?
Three rings of 16 blocks around the conduit, 42 blocks in total, in a 5×5×5 shape.
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By PickaxeKit Editorial Team. Updated 2026-11-09.