ONI Rocket Calculator (Spaced Out! DLC)

Your essential tool for planning rocket missions in Oxygen Not Included. This oni rocket calculator helps determine fuel requirements, travel speed, and range for any build.

What is an ONI Rocket Calculator?

An oni rocket calculator is a specialized tool for the game Oxygen Not Included, particularly for its Spaced Out! DLC. It assists players in the complex task of designing and fueling rockets. Instead of manual guesswork, which can lead to wasted resources or stranded duplicants, a calculator provides precise figures for fuel, oxidizer, and performance metrics based on the rocket’s components and destination. This ensures missions are efficient and successful.

This calculator is designed for anyone from a beginner building their first CO2 rocket to a veteran planning a long-range hydrogen-powered expedition. Common misunderstandings often involve the oxidizer-to-fuel ratios or how module burden impacts speed, both of which this oni rocket calculator clarifies.

ONI Rocket Calculator Formula and Explanation

The core calculations in rocketry for Oxygen Not Included: Spaced Out! are straightforward but depend on numerous variables. The calculator simplifies this by applying the established formulas from the game’s mechanics.

• Rocket Speed (tiles/cycle) = Engine Power / Total Burden
• Total Fuel (kg) = Fuel per Hex (kg) * Target Distance (Hexes)
• Total Oxidizer (kg) = Total Fuel (kg) * Oxidizer Ratio

Rocket Variable Definitions

Variable	Meaning	Unit	Typical Range
Engine Power	The thrust rating of the selected engine.	Unitless	23 – 40 (Varies by engine)
Total Burden	The sum of the burden values of all rocket modules.	Unitless	2 – 20+
Fuel per Hex	The amount of fuel consumed to travel one hex on the starmap.	kg/hex	10 – 20 (Varies by engine)
Oxidizer Ratio	The multiplier for oxidizer consumption relative to fuel.	Ratio	1:1 (Fertilizer), 2:1 (Oxylite), 4:1 (Liquid Oxygen)

Practical Examples

Example 1: Early-Game CO2 Rocket

A simple rocket for initial exploration to a nearby location.

• Engine: CO2 Engine
• Modules: solo_spacefarer_nosecone
• Distance: 4 Hexes
• Results: The oni rocket calculator would show a low fuel requirement (CO2 is plentiful), a specific burden and speed, and zero oxidizer need. This is perfect for a cheap, early-game mission.

Example 2: Mid-Game Petroleum Rocket for Mining

A mission to set up a mining outpost on a resource-rich planetoid.

• Engine: Large Petroleum Engine
• Modules: spacefarer_module, nosecone_basic, solid_cargo_bay, solid_cargo_bay
• Distance: 20 Hexes
• Oxidizer: Oxylite
• Results: The calculator will specify a significant amount of Petroleum and Oxylite needed, accounting for the heavy cargo bays. It would also calculate the speed, which will be lower due to the high burden from cargo modules. This helps plan for refueling trips. For more advanced builds, check our guide on Hydrogen Engine builds.

How to Use This ONI Rocket Calculator

1. Select Your Engine: Choose the engine from the dropdown. This is the most critical step.
2. List Your Modules: Enter each module’s ID on a new line. The calculator automatically sums their burden.
3. Enter Distance: Input the one-way distance to your destination in hexes.
4. Choose Oxidizer: Select the appropriate oxidizer if you’re using a Petroleum or Hydrogen engine.
5. Interpret the Results: The calculator provides the required fuel and oxidizer, plus key performance stats like speed. Use this data to stock your rocket precisely.

Key Factors That Affect Rocket Performance

• Engine Choice: The single most important factor, defining max height, power, and fuel type.
• Total Burden: More modules mean a heavier rocket, which directly reduces speed. A fast rocket might be better than a large one.
• Fuel Type: Hydrogen is the most efficient fuel, offering the best range per kilogram, but is difficult to produce. The ONI rocket fuel efficiency guide has more details.
• Oxidizer Efficiency: Liquid Oxygen is four times as effective as Fertilizer per kg, drastically increasing range for the same tank capacity.
• Number of Fuel/Oxidizer Tanks: More tanks increase total range but also add burden and reduce the available height for other modules.
• Pilot Skills: While not part of this calculator, a pilot’s skills can improve travel speed.

Frequently Asked Questions (FAQ)

Q: Does this oni rocket calculator work for the base game?

A: This calculator is optimized for the Spaced Out! DLC, which has different rocketry mechanics (hex-based travel). Base game calculations are distance-based in kilometers and more complex. You might want to find a specific base game rocket guide for that.

Q: Why is my rocket speed so low?

A: Rocket speed is determined by Engine Power divided by Total Burden. If your speed is low, you likely have too many heavy modules. Try removing non-essential modules to reduce burden.

Q: What does ‘Burden’ mean?

A: Burden is the game’s term for a module’s weight or mass. A higher total burden makes the rocket slower.

Q: How do I handle units for fuel and oxidizer?

A: All units are in kilograms (kg), matching the in-game measurements. This oni rocket calculator automatically uses the correct units.

Q: What if I don’t have enough height for all my modules?

A: Each engine has a maximum rocket height. If your modules exceed this, you must remove some. This calculator focuses on fuel and speed, not height limitations.

Q: Is the calculated fuel for a one-way or round trip?

A: The calculation is for a one-way trip. You must double the fuel and oxidizer amounts to ensure your duplicants can return.

Q: Does the calculator account for takeoff/landing fuel cost?

A: Yes, the hex-based model in Spaced Out! simplifies this. The “fuel per hex” value is an average that effectively covers all travel phases.

Q: Where can I find a guide to different rocket builds?

A: We have several guides, including one for ONI rocket mechanics and a detailed Oxygen Not Included rocket build guide.