Factorio BlueprintsAll belt balancersFactorio 12 to 4 Balancer Blueprint
Factorio 12 to 4 Balancer Blueprint
Twelve belts merged evenly onto four in 12 x 16 tiles with 26 splitters, and throughput unlimited despite the size.
In-game render of the 12 to 4 balancer blueprint
12 to 4 balancer for red, blue and turbo belts
- Input belts
- 12
- Output belts
- 4
- Balancer type
- belt
- Size (tiles, width x length)
- 12 x 16
- Listed belt tiers
- redbluegreen (turbo)
- Throughput unlimited
- Yes
- Input balanced
- Yes
- Output balanced
- Yes
- Entities in the blueprint
- Express transport belts
- 83
- Express underground belts
- 30
- Express splitters
- 26
- String exported by Factorio
- 2.0.69.0
- Designer
- raynquist
String exported by Factorio 2.0.69. Decoded and checked by this site; not test-imported in the game.
Is the 12 to 4 balancer throughput unlimited?
Yes. Throughput unlimited means any group of input belts can feed any group of output belts at their full rate. If some inputs run dry or some outputs back up, the belts that are still in use keep moving at full speed. Choose this layout where belts will often be partly used, such as at the start of a main bus.
Built with express (blue) belts, splitters and undergrounds. The collection lists this layout as working with red, blue and turbo undergrounds, so you can rebuild it in any of those three tiers. Yellow is not on that list, and the collection has no yellow version of this configuration.
Compatible underground tiers listed by the source: red, blue, green (turbo). No yellow alternate in the collection.
- Book
- Raynquist's Belt Balancers Fall 2025
- Book folder
- other balancers
- Name in the book
- 12-4 TU balancer
- The book covers
- 1-1 to 9-9, plus some 10-x, 12-x, 16-16, 32-32, 64-64 and 128-128 configurations; lane balancers for 1, 2, 3, 4, 6 and 8 belts; yellow-belt alternates in a downgrades folder
12 to 4 balancer blueprint string
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The string was exported from Factorio 2.0.69. Copy it, open the game and press Import string on the shortcut bar, then paste. This site decoded the string and checked the entities and size against the preview, but did not import it in the game.
Is there a 12 to 6, 12 to 5 or 12 to 3 balancer?
Not in this collection. For twelve input belts it has 12 to 4, 12 to 10, 12 to 12 and 12 to 25; there is no 12 to 1, 12 to 2, 12 to 3, 12 to 5 or 12 to 6. This 12 to 4 is the nearest for the smaller outputs and is throughput unlimited, so it keeps full speed when some inputs are empty.