Satisfactory Calculator and Planner Tools for 1.2

For Satisfactory 1.2, start with Satisfactory Tools, whose version picker offers game version 1.2.4.1, or the Satisfactory Calculator (SCIM), whose game branch reads Stable (1.2); we checked both on 25 October 2026. If your save uses the new 1.2 Game Mode cost or power multipliers, Yet Another Factory Planner and Satisfactory Modeler have fields for them, and Satisfactory Tools lets you build a custom version with your own costs.

SCIM's interactive map also works as a save editor. The last part of this post covers using it on a dedicated server save without losing the factory.

Calculators and planners that run on 1.2

The official wiki keeps a longer list of community tools. Some entries there still name 1.0, 1.1 or even Update 8, and many name no version at all. Before you build anything from a tool's numbers, look for its version picker or data note.

Which tool for which job

• "How many machines do I need for 10 Computers a minute?" Use Satisfactory Tools. Pick 1.2.4.1, enter the item and the rate, and it works out the machines, recipes and raw resources. You can then change any recipe by hand, which is how you plan around the alternate recipes you have unlocked from hard drives.
• "Where are the nodes, wells and hard drives?" Use SCIM's interactive map. On 25 October 2026 it listed 459 nodes, 118 wells, 31 geysers, 1,242 power slugs and 118 hard drives.
• "My save uses cost multipliers." Use Yet Another Factory Planner or Satisfactory Modeler and enter the same multipliers as your save, or create a custom version in Satisfactory Tools with your own costs.
• "I want to see the whole factory before I build it." Satisfactory Modeler lets you place machines on a canvas, set a limit on any of them and calculates how the parts flow, including how splitters and mergers divide them.
• "Which mix of recipes uses the least power?" Yet Another Factory Planner lets you weight resource efficiency, power efficiency, complexity and building count, and accounts for Somersloops, Power Shards and belt and pipe capacity.

What 1.2 changed for calculators

Two parts of the 1.2 update, stable since 2 June 2026, change the numbers a planner gives you:

• Fluid Stations and Fluid Trucks. They move and store fluids over long distances, hold 3,200 m³ each and unlock in Tier 5 with the Logistics Mk.4 milestone. A planner on 1.1 data doesn't know them.
• Game Modes. When you create a new save you can set a Space Elevator deliverable cost multiplier from 0.25 to 100, a recipe parts cost multiplier from 0.25 to 2 and a power consumption multiplier from 0.25 to 5. You can also randomise resource nodes and their purity. Coffee Stain says these settings cannot be turned off again for that save, and they apply in multiplayer too.

A planner on default costs is wrong for a save with multipliers, and a node map of the default world no longer matches a save with randomised nodes. Check your save's settings before you plan, and set the same values in the tool.

Editing a dedicated server save safely

SCIM's interactive map opens a save file in your browser and gives you an edited copy back. On a dedicated server that takes a few extra steps, and the order matters:

1. Get everyone off the server. Wait for the next autosave, which runs every 300 seconds by default, or let the server save when the last player leaves if Auto-Save on Player Disconnect is on. Then stop the server.
2. Download the save. A Linux server keeps its saves in ~/.config/Epic/FactoryGame/Saved/SaveGames/server; on Windows it is %LocalAppData%\FactoryGame\Saved\SaveGames\server. On a Space-Node server you reach the same files through the panel's file manager or over SFTP. Download the newest .sav file.
3. Back up first. Copy the whole server save folder to your own PC and leave that copy untouched. The wiki's save files page puts it plainly: "always back up your saves!"
4. Edit in SCIM. Open the interactive map, drop the save on it, make the change and use Download save game. The new file comes back with _CALCULATOR added to its name.
5. Put it back. Copy the edited file into your own save folder (%LOCALAPPDATA%\FactoryGame\Saved\SaveGames\ plus your ID) and upload it from the server's Manage Saves tab in the in-game Server Manager. You can also upload it over SFTP into the server's save folder while the server is stopped.
6. Load and test. Start the server, load the edited save from the Server Manager and walk around the changed area before you invite the group back. Keep the untouched copy until you are sure the edit worked.

Change one thing per edit. If a save breaks after five changes at once, you won't know which one did it.

Running your factory on a server

Whatever the planner says, a server has to run it: a mega factory needs RAM and a fast CPU core, and the server needs ports 7777 and 8888 open. The Satisfactory server hosting comparison lists the RAM we would plan per factory size and what eight hosts charged on 25 October 2026. Our Satisfactory 1.0 dedicated server guide covers running your own, and our Satisfactory hosting plans start at €8.00 a month for 8 GB, with both ports set up and a choice of nine regions. If your design uses blueprints, our post on sharing blueprints on a dedicated server shows where those files go.

FAQ

Which Satisfactory calculator works with Update 1.2? On 25 October 2026, Satisfactory Tools offered game version 1.2.4.1 and the Satisfactory Calculator (SCIM) showed Stable (1.2) as its game branch. Yet Another Factory Planner and Satisfactory Modeler both handle the 1.2 Game Mode multipliers.

Is it safe to edit my save with SCIM? Your original is safe if you work on a copy. SCIM hands you a new file with _CALCULATOR in the name and leaves the file you loaded as it was. Keep a separate backup of the whole save folder anyway, and change one thing at a time.

Where is the save on a Satisfactory dedicated server? In ~/.config/Epic/FactoryGame/Saved/SaveGames/server on Linux and %LocalAppData%\FactoryGame\Saved\SaveGames\server on Windows.

Do I need to upload my save to use a calculator? No. Production planners work from the recipes alone. Of the tools above, only SCIM's interactive map reads your game save, to show your buildings on the map or to edit them.

Can a calculator handle a save with Game Mode multipliers? Yes, if you enter the same values as your save. Yet Another Factory Planner has fields for the recipe cost and power multipliers, Satisfactory Modeler has all three cost multipliers in its settings, and Satisfactory Tools lets you make a custom version with your own costs.