About Stack Size Fixed
From Factorio Mod PortalFixed/Updated version of 'Stack Size' by OpenBulochka. Change items' stack sizes, now with a multiplier and custom formula parsing.
~~small~~ considerably big upgrade for OpenBulochka's mod: Stack Size.
options
- _multiplier_: multiply all stack sizes.
- _specific stack size_: set a specific stack size for ALL items.
- _force stacking_: force ALL items to be stackable.
- _custom formula_: use a custom formula to calculate stack sizes (check guide below).
custom formula
if desired, you can use your own custom formula. the supported functions are:
- unary operators:
-a - binary operators: (
a + b), (a - b), (a * b), (a / b) - trigonometric functions:
sin(a),cos(a),tan(a),asin(a),acos(a),atan(a) - rounding functions:
floor(a),ceil(a) - other functions:
abs(a),sqrt(a),log(a),log10(a),exp(a),rad(a),deg(a)
formula examples
- _simple:_
x + 5>> withx = 2, result7. - _medium:_
sin(x) * 2 + sqrt(x)>> withx = 4, result≈ 0.49, final value of1. - _complex:_
sqrt(x^2 + 1) - cos(x) * 3>> withx = 3, result≈ 6.13, final value of6.
Note: the formula SHOULD always use the variable x (current/old stack size of each item). without it, the size will be the same for all stacks. Note: the final value will get its decimal part removed (the floor() operation), and won't be less than 1.
credits
original codes for the parsing logic made by ByteXenon. check the GitHub here.
Highlights
From source dataFootprint
Rated a light load on a server.
License
Published under MIT.
Last update
Its author last shipped an update 3 mo ago.
Stack Size Fixed on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Factorio servers. We download it from Factorio Mod Portal, place it, and restart the server.
- Server side
- Required on the server
- Server load
- light
- Smallest plan we suggest
- Factorio — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 1.1.4, released 2026-07-26
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 1.1.4 | 2026-07-26 | 2.1 | n/a |
| 1.0.4 | 2026-07-26 | 2.0 | n/a |
| 1.1.3 | 2026-07-22 | 2.1 | n/a |
| 1.0.3 | 2026-07-22 | 2.0 | n/a |
| 1.1.2 | 2026-07-18 | 2.1 | n/a |
| 1.0.2 | 2026-07-18 | 2.0 | n/a |
Dependencies
- Required: Math Parser (coded by ByteXenon)
Declared by the newest build that lists any. Required ones are installed with it on one-click installs.
Run Stack Size Fixed on a Factorio server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogQuality of life & UI
Small conveniences, tweaks and interface improvements players notice straight away.
Runs on your server
From source side supportFactorio Mod Portal lists Stack Size Fixed as required on the server. Check its Factorio Mod Portal page to see whether players need it too.
Compatibility
- Game
- Factorio
- Runs on
- Serverrequired on the server
Verified at the source
- ✓Factorio Mod PortalOfficial listing, checked 2026-10-08Open ↗
- ✓AuthorFactory077, as published on Factorio Mod Portal
- ✓LicenseMITFree

