Satisfactory 4-to-4 Balancer Generator

Calculate balanced factory belt distribution, throughput, ratios and advanced production flows with a fast browser-based calculator.

Start Balancing Advanced Tools
Client-Side No Login Free Tool Mobile Friendly
Total Input
0
items/min
Total Output
0
items/min
Target Per Output
0
items/min
Balance Score
0%
—

Balancer Mode

ⓘChoose how to distribute inputs across outputs.
Perfectly balance all four outputs to the same rate.

Input Belts

items/min
—
items/min
—
items/min
—
items/min
—
Presets:

Output Belts

0
items/min
0% · Target: 0 · Diff: 0
—
0
items/min
0% · Target: 0 · Diff: 0
—
0
items/min
0% · Target: 0 · Diff: 0
—
0
items/min
0% · Target: 0 · Diff: 0
—
Validation
✓ Total input calculated
✓ Output total matches input
✓ No negative values
Recommendation: Enter input values to get started.
Flow Diagram

Advanced Factory Calculators

Belt Capacity Calculator

items/min
Required belts: — · Utilization: —

Splitter Calculator

items/min
Each branch: — items/min

Merger Calculator

/min
/min
/min
/min
Total merged: — items/min

Ratio Calculator

A:B = — · A: —% · B: —%

Throughput Calculator

/min
Utilization: —% · Excess: — /min

Overflow Calculator

/min
/min
Overflow: — · Unused capacity: —

Production Calculator

Total production: — items/min

Underclock Calculator

/min
/min
Clock speed: —% · Production: — /min

Belt Count Calculator

/min
/min
Minimum belts: —

How to Use the Satisfactory 4-to-4 Balancer

This tool helps you calculate balanced belt distribution for your Satisfactory factory. Follow these steps:

  1. Enter the four input belt rates in items/min.
  2. Check the total throughput displayed in the KPI dashboard.
  3. Select a balancing mode (Perfect, Priority, Proportional, Equal, Min Bottleneck, or Custom %).
  4. Review the target output rates for each of the four output belts.
  5. Check belt utilization and balance score to verify efficiency.
  6. Use the visual flow diagram to understand the distribution.
  7. Apply the recommended splitter/merger configuration in your factory.

All calculations run locally in your browser — no data is sent to any server.

What Is a 4-to-4 Balancer?

A 4-to-4 balancer is a network of splitters and mergers that takes four input belts and distributes their combined throughput evenly across four output belts. It ensures that each output belt carries an equal share of the total input, regardless of individual input rates.

How 4-to-4 Belt Balancing Works

The balancer works by summing all four input rates, then dividing by four to determine the target output per belt. In a perfect balance, each output belt receives exactly one quarter of the total throughput. The calculator uses floating-point-safe math to handle non-integer values and provides a balance score to indicate how close the actual distribution is to the ideal.

Satisfactory Belt Throughput Explained

Belt throughput is the maximum number of items a conveyor belt can carry per minute. In Satisfactory, different belt tiers have different capacities: Mk.1 (60/min), Mk.2 (120/min), Mk.3 (270/min), Mk.4 (480/min), Mk.5 (780/min), and Mk.6 (1200/min). The calculator uses these values to determine belt utilization and identify potential bottlenecks.

4-to-4 Balancer Examples

Example 1: Inputs of 120, 240, 360, and 480 items/min total 1,200/min. The target per output is 300/min. The calculator will show a 100% balance score if all outputs are 300/min.
Example 2: Inputs of 60, 60, 60, and 60 total 240/min. Target per output is 60/min. This is already perfectly balanced.
Example 3: Inputs of 200, 100, 50, and 150 total 500/min. Target per output is 125/min. The calculator will show how to distribute the uneven inputs.

Frequently Asked Questions

A 4-to-4 balancer is a belt network that takes four input belts and distributes their combined items evenly across four output belts, ensuring each output gets an equal share of the total throughput.
Sum all four input rates, then divide by four. Each output belt should carry that average rate. The calculator does this automatically and shows the target per output.
The balancer still averages the total across all four outputs. The calculator provides modes like "Proportional" and "Priority" to handle uneven inputs in different ways.
Yes. The belt capacity calculator in the Advanced Tools section lets you adjust capacities for all belt tiers, and the main calculator uses these values to show utilization and bottleneck warnings.
A splitter divides a single input into multiple outputs, while a balancer takes multiple inputs and redistributes them evenly across multiple outputs. A balancer is essentially a network of splitters and mergers.
Yes. The interface is fully responsive and works on mobile phones, tablets, and desktops. Inputs and outputs adapt to smaller screens.
No. The calculator runs entirely in your browser. No account, login, or sign-up is required.
No. All data stays in your browser's local storage. Nothing is sent to any server. You can save and load configurations locally.