Free Minecraft Tool
Minecraft Server RAM Calculator
Accurately calculate how much memory your server needs for Paper, Fabric, Forge, or Purpur without overpaying or experiencing TPS lag.
Recommended Memory
4 GB
100% Supported on FreeGameHost Free Tier!
Base Server Engine:
1.5 GB
Player Chunk Allocation:
1.5 GB
Mods & Plugin Overhead:
1.0 GB
Recommended JVM Heap:
-Xms4G -Xmx4G
Frequently Asked Questions
Is 4 GB of RAM enough for a Minecraft server?
Yes! 4 GB is the sweet spot for modern Minecraft 1.20+. It comfortably runs Paper, Purpur, or Fabric with 15–20 active players and 20+ plugins without experiencing TPS drops or chunk lag.
Why does Forge need more RAM than Paper or Fabric?
Forge mods inject custom entities, block states, and ticking tile entities directly into the JVM. Large modpacks (like All The Mods or Better MC) require at least 6–8 GB of RAM to prevent OutOfMemory errors.
Does FreeGameHost really give 4 GB RAM for free?
Yes! FreeGameHost provides 4 GB RAM, 200% CPU, and 6 GB NVMe SSD storage completely free 24/7. No credit card is required and servers never sleep when empty.