🧮 Not Enough Calculator

A powerful calculator mod that brings NEU-style calculator functionality to Roughly Enough Items (REI).

Inspired by NotEnoughUpdates's calculator, recreated for newer Minecraft versions where NEU isn't available.

Showcase

Showcase 2

What does this mod do?

Type calculations directly in the REI search bar and get instant results! Perfect for Hypixel Skyblock players who miss the NEU calculator.

Example: Type 100m - 50m in the REI search → See = 50,000,000 instantly

Key Features

Basic Math

Addition, subtraction, multiplication, division (+, -, * or x, X, /)
Exponents and modulo (^, %)
Parentheses for complex expressions
Functions: sqrt(), abs(), floor(), ceil(), round()

Hypixel Skyblock Units

Currency: k, m, b, t (thousand, million, billion, trillion)
Items: s (stack = 64), e (enchanted = 160)
Storage: h (shulker = 1,728), sc (small chest = 1,728), dc (double chest = 3,456), eb (ender chest = 2,880)

Variables

ans – Automatically stores last calculation result
Custom variables with /calcset command
Chain calculations easily with ans

History & Shortcuts

Press Ctrl+Z in REI search to recall previous calculations
Press Ctrl+Y to redo/go forward in history
View full history with /calchist (shows last 10 entries)
Session-based: History clears automatically when you leave a world/server

Customization

Configurable decimal precision (default: 10 digits)
Toggle features on/off via config file
Comma formatting for large numbers

Dependencies (Required):

How to Install

Download the required mods and place them into your Minecraft mods/ folder:
- Fabric API
- Roughly Enough Items (REI)
- Not Enough Calculator (this mod)
Launch Minecraft using the Fabric loader
Press your inventory key to open REI
Start typing calculations directly into the REI search bar

Examples

Auction House & Trading

100m - 75m = 25,000,000          (profit calculation)
100m * 0.05 = 5,000,000           (5% auction tax)
50m * 1.1 = 55,000,000            (10% markup)
(100m - 60m) * 0.95 = 38,000,000 (profit after tax)
1b / 100 = 10,000,000              (price per item)
250m + 150m + 75m = 475,000,000  (total spending)

Inventory & Storage Management

640 / 64 = 10                     (stacks needed)
5s * 2 = 640                      (10 stacks)
3h = 5,184                        (3 shulkers total items)
2dc + 5sc = 15,552                (storage capacity)
10000 / 64 = 156.25               (156 stacks + 16 items)
27s = 1,728                       (full shulker)

Crafting & Resources

160 * 5 = 800                     (5 enchanted = 800 items)
5e * 3 = 2,400                    (crafting cost)
64 * 27 = 1,728                   (shulker capacity)
1728 / 160 = 10.8                 (enchanted items per shulker)
9 * 160 = 1,440                   (enchanted block crafting)

Mining & Farming

500 + 300 + 200 = 1,000           (total ores mined)
1000 / 3 = 333.33                 (average per hour)
dc / 333 = 10.38                  (hours to fill double chest)
64 * 100 = 6,400                  (100 stacks)
6400 / 160 = 40                   (enchanted items)

Money & Profits

1000m - 800m = 200,000,000        (200m profit)
500m * 0.20 = 100,000,000         (20% profit margin)
(1000m - 500m) / 500m = 1          (100% ROI)
100m * 2.5 = 250,000,000          (2.5x flip)
50m * 30 = 1,500,000,000          (bulk buying)

Advanced Math

sqrt(144) = 12                    (square root)
2^10 = 1,024                      (exponents)
100 % 7 = 2                       (modulo)
abs(-50) = 50                     (absolute value)
floor(3.9) = 3                    (round down)
ceil(3.1) = 4                     (round up)
round(3.5) = 4                    (round nearest)

Compound Calculations

100m * (1.05 ^ 10) = 162,889,462.68     (10 weeks compound)
(50 + 25) * 1000 = 75,000                (grouped operations)
(sqrt(2500) + abs(-100)) / 2 = 75       (complex formula)
((100 + 50) * 2) - 50 = 250              (nested parentheses)

Price Per Item

1b / 1000 = 1,000,000              (price per unit)
500m / 64 = 7,812,500              (price per stack)
100m / 160 = 625,000               (price per enchanted)
50m / 27 = 1,851,851.85           (price per slot)

Percentage Calculations

100m * 0.85 = 85,000,000          (15% discount)
500m * 1.25 = 625,000,000         (25% increase)
(200m - 150m) / 150m = 0.3333     (33% profit margin)
1b * 0.01 = 10,000,000            (1% tax)

Material Conversions

160 * 64 = 10,240                 (1 stack enchanted blocks)
9 * 9 * 160 = 12,960              (1 enchanted block breakdown)
64 * 64 = 4,096                   (double compressed)
1728 / 64 = 27                    (stacks per shulker)

Business & Investment

1000m * 0.02 = 20,000,000         (2% daily interest)
20m * 365 = 7,300,000,000         (yearly earnings)
(1000m + 200m) / 2 = 600,000,000  (average investment)
500m * 1.5 = 750,000,000          (50% growth)

Combat & Stats

(100 + 50 + 25) / 3 = 58.33       (average damage)
sqrt(10000) = 100                 (damage calculation)
200 * 1.5 = 300                   (crit damage)
(500 - 100) * 1.2 = 480           (defense reduction)

Bulk Operations

50 * 100m = 5,000,000,000         (buying 50 items)
1000 * 500k = 500,000,000         (bulk crafting cost)
64 * 15625 = 1,000,000            (precise calculations)
27 * 64 * 100 = 172,800           (mass storage)

Using Variables

/calcset buy 50m
/calcset sell 75m
$sell - $buy = 25,000,000         (profit using variables)

/calcset stacks 10
$stacks * 64 = 640                (items from stacks)

100 + 50 = 150
ans * 2 = 300                     (using last result)
ans + 100 = 400                   (chain calculations)

Basic Multiplication

10 x 10 = 100 (using x operator) 10x10 = 100 (no spaces needed) 
5 * 5 = 25 (traditional * also works) 
100m x 2 = 200,000,000 (x with units) 
3s x 5 = 960 (stacks multiplication) 
10x5x2 = 100 (chained multiplication)

Commands

Basic Commands

/calc <expression> - Calculate in chat
/calchist - View calculation history (shows last 15)
/calcclear - Clear calculation history

Variable Commands

/calcset <var> <value> - Set custom variable
- Example: /calcset profit 100m-50m
- Example: /calcset stacks 10

Help Commands

/calchelp - Show main help menu
/calchelp operators - Learn about +, -, *, x, /, ^, %
/calchelp functions - Learn about sqrt, abs, floor, ceil, round
/calchelp units - Learn about k, m, b, t, s, e, h, sc, dc, eb
/calchelp variables - Learn about ans and custom variables
/calchelp examples - See practical examples
/calchelp config - Learn about configuration

Configuration Commands

/calcconfig - View current configuration

Configuration

Config file: config/notenoughcalculator.json

Available Settings

{
  "decimalPrecision": 10,
  "showUnitSuggestions": true,
  "enableHistoryNavigation": true,
  "showInlineResults": true,
  "enableCommaFormatting": true
}

Settings Explained

decimalPrecision (Default: 10) - Number of decimal places
showUnitSuggestions (Default: true) - Show unit hints like "(50m)" in commands
enableHistoryNavigation (Default: true) - Enable Ctrl+Z/Y shortcuts
showInlineResults (Default: true) - Show results in REI search
enableCommaFormatting (Default: true) - Format large numbers with commas

Keybinds

History Navigation

Ctrl + Z in REI search - Recall previous calculation (undo)
Ctrl + Y in REI search - Go forward in history (redo)

Notes

History is session-based and automatically clears when you leave a world or server
This ensures a fresh start each time you play!
Use /calchist to view your calculation history in chat

Pro Tips

Use `ans` for quick follow-ups

100 + 50 = 150
ans * 2 = 300
ans + 1000 = 1,300

Save common values as variables

/calcset hourly 500k
/calcset daily $hourly * 24
$daily * 30 = 360,000,000 (monthly)

Mix different units

100m + 500k = 100,500,000
2dc + 5h = 18,432

Use parentheses for clarity

(5 + 3) * 2 = 16  (not 11)
2^(10-3) = 128    (not 1017)

Use either * or x for multiplication

10 * 5 = 50    (traditional)
10 x 5 = 50    (also works)
10x5 = 50      (no spaces needed)

Support

Important Version Notice:

Following Hypixel SkyBlock’s Modern Update, only the latest two major Minecraft versions are supported. This mod will not receive updates for older versions. Please ensure you are using a supported version to avoid issues.

Need help or found a bug?

Please report issues on GitHub: Issues
Or join our Discord for support: Discord

Common Issues

Calculator not showing results? Make sure REI overlay is visible (press your inventory key)
Red text in search bar? This is a cosmetic issue that doesn't affect functionality
History not working? Make sure enableHistoryNavigation is true in config
Calculator is unresponsive? Make sure you have clicked on the REI search bar so the calculator is in focus. If you click somewhere else on the screen while typing the query, it will become unresponsive.
Text selection not highlighted in search field? Ctrl+A correctly selects all text, but the selection highlight is not visible. The text is selected; it’s just not visually indicated. This is a temporary issue closing and reopening your inventory will fix it.

Why This Mod?

NEU (NotEnoughUpdates) is one of the most popular Hypixel Skyblock mods, and its calculator feature was incredibly useful. However, NEU isn't available for newer Minecraft versions, leaving players without this essential tool.

Not Enough Calculator solves this problem by bringing NEU-style calculator functionality to Roughly Enough Items (REI), which works on newer Minecraft versions.

Credits

Special thanks to NotEnoughUpdates (NEU) for the original calculator inspiration! This mod brings the beloved NEU calculator experience to newer Minecraft versions.

License

License Update Notice

As of February 2nd, 2026, the project has been relicensed under the
GNU Lesser General Public License v3.0 or later (LGPL-3.0-or-later).

What this means

Open Source: The project is now free and open source.
Modifications: Any modifications or forks of this project's source code must be released under LGPL-3.0-or-later.
Linking and Compatibility: Other projects (including proprietary mods, closed-source plugins, or modpacks) may link to, depend on, or interoperate with this mod without being required to adopt the LGPL, provided they do not modify this project's source code.
Ecosystem Integration: This improves compatibility with the wider Minecraft modding ecosystem.

Versioning and Legacy

Current and Future Versions: All versions released on or after February 2nd, 2026 (starting with v1.0.12) are licensed under LGPL-3.0-or-later.

This mod is licensed under the GNU Lesser General Public License v3.0 or later (LGPL-3.0-or-later).

You are free to:

Use, modify, and redistribute this mod
Include it in modpacks (commercial or non-commercial)

Under the following conditions:

Modifications to this mod must be released under the same license
You must provide appropriate credit and include a copy of the license
You must state any changes you make

View the full license text:
View License

Created and maintained by Laze & Rijz

Type. Calculate. Profit.

Last Updated: February 2026

NotEnoughCalculator