Portal Calculator
A Fabric mod that adds a /convert command to calculate Nether portal coordinates
About this Mod
Portal Calculator 1.2x.x
A Fabric mod for Minecraft 1.2x.x that adds a /convert command to calculate
Nether portal coordinates.
Features
/convert— Automatically converts your current position based on your dimension/convert nether <x> <y> <z>— Converts Overworld coordinates to Nether coordinates/convert overworld <x> <y> <z>— Converts Nether coordinates to Overworld coordinates
The command is available to all players (permission level 0).
Available Versions
How to Install Portal Calculator on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).
Install Mod
Open the mod browser in the dashboard and search for "Portal Calculator". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.11, 1.21.10, 1.21.9 (+15 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Portal Calculator server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.
Is Portal Calculator compatible with fabric?
Portal Calculator officially supports fabric for Minecraft 1.21.11, 1.21.10, 1.21.9. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Portal Calculator – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Portal Calculator consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install Portal Calculator with just one click on your server.