REI Search Bar Calculations

REI Search Bar Calculations

Adds a calculator to REI's search bar.

by
639.2K Downloads
fabricutility
Configure a Compatible Minecraft Server

Screenshots

Showcase of the search bar
Showcase of the command

About this Mod

➕➖REI Search Bar Calculations✖️➗

  • This mod adds the ability to use the search bar of REI as a calculator, works similarly to the mod NEU (Not Enough Updates) for Forge 1.8.9.

    The calculator in practice.

  • This mod has support for for features like metric prefixes for numbers,

    Showcase of the metric prefixes.

  • and also support for minecraft stacks as a unit.

    Showcase of using stacks as a unit.

  • The mod also adds the command /calc that functions the same way but as a command instead.

    The command in action.

  • NEW Using e for using enchanted variants of items (number*160).

A simple and fast calculator for everyday use!

📖 Dependencies

Requires REI to function currently, I do plan on adding support for this mod to work without REI in the future.

📖 Why I made this mod?

This mod was mostly made because of Hypixel Skyblock's recent update which forces players to use 1.21.5 for their newest content island, and a new mod for REI added skyblock items to it, was supposed to be the replacement for NEU for the newer version, however, REI lacks this quality of life feature I personally have been missing and my aim is to reach players like me who have also felt the lack of this feature to be annoying, with that I also encourage anyone using REI to give this mod a chance as it does add some nice utility to it if you are playing on a modpack and don't want to open your calculator app every time you need to calculate something.

Something I also wanted to make clear is that I did not make the calculator functionality itself, it was entirely made by the team behind NEU, I took it and implemented it into my own mod which is allowed under their licensing.

Hope you enjoy using it!

Available Versions

REI Search Bar Calculations 1.1.1+1.21.6-11release
MC 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11fabric
April 7, 2026
REI Search Bar Calculations 1.1.0+1.21.6-10release
MC 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10fabric
January 23, 2026
REI Search Bar Calculations 1.1.0+1.21.5release
MC 1.21.5fabric
January 22, 2026
REI Search Bar Calculations 1.1.0+1.21.6release
MC 1.21.6fabric
January 22, 2026
REI Search Bar Calculations 1.0.2+1.21.6-10release
MC 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10fabric
July 30, 2025

How to Install REI Search Bar Calculations on Your Client

1

Install the Mod Loader Locally

Install fabric for your local Minecraft version.

2

Download the Matching File

Choose the REI Search Bar Calculations file for fabric and Minecraft 1.21.11.

3

Install Mod

Place the .jar file in your local .minecraft/mods folder and restart Minecraft. No server-side installation is required.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11, 1.21.10, 1.21.9 (+4 more)

Server-side

Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Does REI Search Bar Calculations need to be installed on the Minecraft server?

No. Modrinth marks REI Search Bar Calculations as unsupported on the server side. Install it only in your local Minecraft mods folder. Your server can remain unchanged unless the mod page lists an additional dependency.

Which version and loader does REI Search Bar Calculations require?

Use a file for fabric and your exact Minecraft version. Supported versions include 1.21.11, 1.21.10, 1.21.9. Files for different loaders are not interchangeable.

REI Search Bar Calculations is not working – what should I check?

First check the Minecraft version, loader version and required dependencies. Put the .jar file in your local .minecraft/mods folder and remove older duplicates. Because this mod is client-side, adding server RAM will not fix it.

Minecraft Server for Your Group

REI Search Bar Calculations stays on your client. Host a compatible world for your group.

Recommended RAM
4 GBfrom €5.2/mo
Minimum 3 GB | per 8 players
Create Server Now
Client Compatibility Guide
NVMe SSD Storage
DDoS Protection included

Details

License
GNU Lesser General Public License v3.0 only
Server-side
Unsupported

Supported Versions

1.21.111.21.101.21.91.21.81.21.71.21.61.21.5