Enable Lava Source Conversion

Let new lava source blocks form the way water does

✅ Verified for Java 26.2 · Bedrock 26.32 — checked June 2026

Turns on lava source conversion so that flowing lava surrounded by enough source blocks can form a new source, similar to how water infinites work. It is off by default and is a Java-only gamerule. Note this needs the right diagonal source layout and does not turn any two lava blocks into an infinite pool.

/gamerule lavaSourceConversion true

35 characters

Java: yes
Bedrock: no
Command block: yes
Needs cheats / OP: yes

How to use

Open chat (T on Java).
Paste the command and press Enter.
Arrange lava sources in a valid pattern and the enclosed center can refill as a source.

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