Not Enough Calculator
by Pixelbrew
With Not Enough Calculator installed, typing a sum such as 100m into a search bar returns the result at once, and the bar works on its own or inside REI.
What it does
Not Enough Calculator brings a NEU-style calculator to Fabric for Minecraft 26.3 and the 1.21.5 – 26.3 range, where the NotEnoughUpdates calculator is not available. Players type a calculation into a search bar and see the answer immediately, for example 50m shown as 50,000,000. A dedicated help menu with a calchelp topic and a troubleshooting page covers common input questions.
The search bar can run standalone, with its own field at the bottom of inventory screens, or inside Roughly Enough Items, where it sits in the REI search bar and in the Skyblock Item List. Standalone mode arrived in version 2.7.0; earlier builds need REI installed. Fabric API and Fabric Language Kotlin are required, while Roughly Enough Items, Skyblock Item List and Mod Menu are optional.
The mod is client-side only, so servers run without it and players install it alone. Its code is open source under the GNU Lesser General Public License v3.0 or later, and source code and an issue tracker are public. The latest Fabric file is 3.1.0 for 26.3, published on 2026-09-30.
Key features
Instant calculation results
Calculations typed into the search bar return the answer as soon as the expression is entered.
Standalone search bar
A separate search bar sits at the bottom of inventory screens and works without any other mod.
REI integration
The calculator also works inside the Roughly Enough Items search bar and the Skyblock Item List search bar.
Help menu and troubleshooting
A help menu with a calchelp topic and a common issues page explain input syntax and fixes.
Gallery
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x7 of 7 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
REI Search Bar Calculations is Fabric-only and client-side only, under the GNU Lesser General Public License v3.0 only, with files for 1.21.5 – 26.2, so it covers an earlier range than this mod. REI+ is also client-side only and open source under the MIT License, but its files cover 1.21.10 – 26.1.2 and it carries no standalone search bar. Simple Calculator is open source under the MIT License and client-side only, with a single file for 1.21.5.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Not Enough Calculator | Fabric | 1.21.5 – 26.3 | Client-side only | 2026-09-30 |
| REI Search Bar Calculations | Fabric | 1.21.5 – 26.2 | Client-side only | 2026-10-10 |
| REI+ | Fabric | 1.21.10 – 26.1.2 | Client-side only | 2026-08-28 |
| Simple Calculator | Fabric | 1.21.5 | Client-side only | 2025-05-27 |
Questions
Does Not Enough Calculator need Roughly Enough Items?
Which loader does the mod use?
Does the server need the mod?
Which game versions are supported?
In the catalog
Not Enough Calculator is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 8,071 mods support Minecraft 26.3.
More from Pixelbrew
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What the author says
A NEU-style calculator that works standalone or inside Roughly Enough Items (REI) & Skyblock Item List search bars. Type calculations directly in the search bar and get instant results. Type calculations directly in the search bar and get instant results! Works inside Roughly Enough Items (REI)'s search bar, Skyblock…
Official listing
- Modrinth page
- modrinth.com/mod/notenoughcalculator
- Owner
- Pixelbrew
- Published
- 2026-01-16
- Updated on Modrinth
- 2026-09-30
- Facts verified
- 2026-10-15