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Server tools

World Size Calculator

How many GB a world of a given size takes on disk.

GB
World border diameter (blocks)
Pre-generate it with Chunky

            
        

        

            
Needs the Chunky plugin or mod. World names are for Paper/Spigot; on Fabric or NeoForge use minecraft:overworld, minecraft:the_nether and minecraft:the_end.

            

            
        

    






    
Frequently asked questions

    

                    

                How big is a 10,000 block world?
                
A freshly generated 10,000 × 10,000 world on 1.18+ is about 4 GB for the Overworld. Survival play adds to that over time.

            

                    

                Why are 1.18+ worlds so much bigger?
                
The Overworld went from 256 to 384 blocks tall, so each chunk takes roughly 40 to 50% more space.

            

                    

                How do I make an existing world smaller?
                
Delete unused chunks with a tool like MCA Selector. Stop the server and make a backup first.

            

            







                

            

                
More free Minecraft tools

            

            

                                    
    
    
        Server Status Checker
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        Ping Test New
        Ping any server by its address: latency, jitter and loss.
    

                                    
    
    
        Votifier Tester New
        Send a test vote to Votifier or NuVotifier.
    

                                    
    
    
        Server Icon Converter
        Turn any image into a 64×64 server-icon.png.
    

                            

            
See all 16 tools 

        

        
        

            

    

        
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