RAM Calculator
Estimate how much RAM your Minecraft server needs. Based on typical Paper / Spigot / Fabric workloads.
Recommended RAM
4 GBcomfortable headroom
Estimate only — heavy modpacks, large redstone and view-distance tweaks change real usage.
Browse 4 GB plansHow the estimate works
The calculator adds a base cost for the server software, plus per-player, per-plugin and per-world-chunk overheads. It then rounds up to the next common plan size (2, 4, 6, 8, 12, 16, 24, 32 GB) so you have headroom for spikes.
For modded packs, count each mod as roughly one plugin. If you run a proxy like Velocity, calculate each backend server separately and add 256 MB for the proxy itself.