Minecraft server RAM Calculator

The best calculator for estimating how much RAM a Minecraft server needs. Position the players, plugins, and mods, to get an estimate of how many resources you need.

Server RAM Recommendation

Recommended RAM: 4GB
Upkeeping RAM: 2GB

How much RAM do I need for a Minecraft server?

Based on the individual needs, Minecraft servers require at least 2GB of RAM for versions under 1.12. Newer versions require at least 4GB of RAM assigned. With these statistics set, we have outlined the specifications you need to know for creating a Minecraft server.

Ram Required









Player Slots

Up to 20

Up to 30

Up to 40

Up to 60

Up to 150

Up to 200

Up to 300

Up to 500+

World Size

Up to 8GB

Up to 10GB

Up to 15GB

Up to 20GB

Up to 30GB

Up to 60GB

Up to 100GB











Recommended CPU

Intel Xeon E3-1230 v2

Intel Xeon X5650

Intel Xeon Silver 4108

AMD Opteron 6272


AMD Ryzen 3 3100 R3-3100


Intel AT80614005913AB

CPU Price









Minecraft Calculator FAQ

How does the Minecraft RAM Calculator work?

The Minecraft RAM calculator is based on long research and case studies. The RAM per player, mod, or plugin is an estimate for best outcome of what resources you need.

While these numbers may not be absolute, they are the average of how much RAM a server needs to operate properly.

Alternatively, you can use our other server management tools.

Why is my Minecraft server crashing?

Minecraft servers often crash due to low amounts of RAM used by your OS. If you are using Windows to host your Minecraft server, reserve at least 4GB of RAM for your system.

As Windows is resource extensive, you should not allocate all of your RAM to your server. If you wish to allocate more RAM to your server, use a different OS such as Linux. It requires only 512MB of RAM to keep your system running smoothly.

Does Minecraft server need CPU?

Minecraft servers require a CPU to be installed in order to operate. Single-threaded CPU from the Intel Celeron brand could handle plenty of player traffic, as it is designed for such purposes. And since Minecraft doesn't use multi-threaded CPU's, you can easily invest in almost any budget CPU, rather than buying a gaming one.

Can my computer run a Minecraft server?

Any computer can run a Minecraft server, even the older ones. Our Minecraft server RAM calculator gives you estimates of how many players it can upkeep with plugins or mods installed.

Why is my Minecraft server laggy?

Many Minecraft servers have lag issues. While the basic cause may be lag machines or too many actions.

Is 1 GB of RAM good for a Minecraft server?

If you are playing older versions of Minecraft like 1.12 and below, 1GB of RAM is good for a server. However, versions 1.13 and above require at least 4GB to power up and use your server. 

Is 4GB RAM enough for a modded Minecraft server?

Modded Minecraft servers require more RAM than those using plugins. Using 4GB of RAM to run mods could keep your server playable, but it depends on how much RAM is allocated, and what mods you wish to play. The recommended starting RAM is between 4 to 6GB to keep your server in good health.