ONI Calculator
Geyser Output ONI Calculator
Analyze any geyser, vent, or volcano to find its true average output. This ONI Calculator helps you plan your colony’s resource needs with precision.
The rate of emission in grams per second while the geyser is actively erupting.
The duration of a single eruption event.
The pause duration between eruptions during the geyser’s active period.
The total duration the geyser is active and goes through eruption cycles.
The total duration the geyser is dormant and produces nothing.
Formula Used: The ONI Calculator determines the true output by averaging the emission over the entire active and dormant cycle. Avg. Output = (Emission * Eruption Duration / (Eruption Duration + Pause)) * (Active Cycles / (Active + Dormant Cycles))
Geyser Cycle Breakdown
Visualizes the percentage of time the geyser is active versus dormant.
Output Comparison
Compares the output during the active period versus the overall average output.
What is an ONI Calculator?
An ONI Calculator is an essential tool for players of the space-colony simulation game, Oxygen Not Included. These calculators help manage the complex resource and system mechanics within the game. While there are various types, such as a food or power calculator, the most common is the geyser ONI Calculator. It’s designed to solve a critical problem: geysers, vents, and volcanoes have inconsistent outputs. They cycle between periods of activity and dormancy, and even during their active phase, they erupt intermittently. This makes it difficult to gauge how much resource you can reliably harvest. A proper ONI Calculator takes these variables and computes a stable, long-term average output, allowing for sustainable base planning.
Anyone serious about long-term survival in Oxygen Not Included should use an ONI Calculator. From beginners trying to tame their first steam vent to veterans designing complex industrial bricks, understanding the true yield of a natural resource node is fundamental. A common misconception is that the “Output” value shown on a geyser’s eruption is what you get; this is only true for a few seconds at a time. Failing to use an ONI Calculator can lead to critical system failures, such as power grids failing or oxygen production halting because the geyser you relied on entered a long dormant period. For a robust colony, you need to plan with the numbers provided by an accurate ONI Calculator.
ONI Calculator Formula and Mathematical Explanation
The mathematics behind an ONI Calculator for geysers involves two layers of averaging. First, we calculate the average output during the active period. Second, we average that output over the geyser’s entire lifecycle, including its dormant phase.
Step 1: Calculate Active Period Uptime. This is the percentage of time the geyser is actually erupting during its active phase.
Eruption Uptime = Eruption Duration / (Eruption Duration + Time Between Eruptions)
Step 2: Calculate Active Period Output. This is the average output you can expect while the geyser is active.
Active Output = Emission Rate * Eruption Uptime
Step 3: Calculate Full Cycle Uptime. This is the percentage of time the geyser is active over its entire life.
Total Uptime = Active Period / (Active Period + Dormant Period)
Step 4: Calculate Overall Average Output. This is the final, true value you can rely on for planning.
Overall Average = Active Output * Total Uptime
Understanding this formula is key to using any ONI Calculator effectively and making informed decisions about your colony’s infrastructure. For instance, a powerful volcano might seem great, but if its dormant period is extremely long, a weaker but more consistent geyser might be a better choice, a fact an ONI Calculator makes immediately obvious. For more complex setups, check out our guide on advanced power systems.
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Emission Rate | Output during eruption | g/s, kg/s | 100 – 6000+ |
| Eruption Duration | Length of a single eruption | seconds | 5 – 120 |
| Active Period | Total time the geyser is active | cycles | 10 – 90 |
| Dormant Period | Total time the geyser is inactive | cycles | 20 – 120 |
Practical Examples (Real-World Use Cases)
Example 1: Taming a Cool Steam Vent
A player finds a Cool Steam Vent with the following properties, which they input into the ONI Calculator:
- Output per Eruption: 1500 g/s
- Eruption Duration: 45s
- Time Between Eruptions: 180s
- Active Period: 65 cycles
- Dormant Period: 30 cycles
The ONI Calculator provides the results: The overall average output is 205.26 g/s of steam. This knowledge is crucial. A single Electrolyzer requires 1000 g/s of water. The player now knows this vent can sustainably power roughly 1/5th of an electrolyzer setup. They will need to either find more water sources or build a large reservoir to buffer the output for their ONI electrolyzer setups.
Example 2: A Natural Gas Geyser for Power
A player wants to build a power plant using a Natural Gas Geyser. They use the ONI Calculator with its stats:
- Output per Eruption: 120 g/s
- Eruption Duration: 90s
- Time Between Eruptions: 400s
- Active Period: 88 cycles
- Dormant Period: 45 cycles
The ONI Calculator shows a true average output of 14.75 g/s. A Natural Gas Generator consumes 90 g/s while running. This means the geyser cannot support a generator full-time. However, the player now understands that the geyser produces enough gas to run one generator for about 16.4% of the time (14.75 / 90). They can use this data to set up smart batteries and automation to only run the generator when needed, ensuring the gas supply is sustainable, a core concept for any good ONI Calculator user.
How to Use This ONI Calculator
Using this ONI Calculator is straightforward. Follow these steps to get precise results for your colony:
- Analyze the Geyser: First, have a Duplicant with the “Geologist” skill analyze the geyser in-game. This reveals all its properties.
- Enter the Data: Input the four key values from the game into the corresponding fields in the ONI Calculator above. These are Output per Eruption, Eruption Duration, Time Between Eruptions, Active Period, and Dormant Period.
- Read the Results: The ONI Calculator instantly updates. The most important value is “Overall Average Output”. This is the amount you can safely assume the geyser provides over long periods.
- Make Decisions: Use the average output to plan your builds. For example, if the calculator shows an average of 500 g/s of water, do not build machinery that consumes more than that without a backup source or large storage. This proactive planning, facilitated by the ONI Calculator, prevents resource shortages. Efficient base building is a must, learn more at our efficient base designs page.
Key Factors That Affect ONI Calculator Results
The output of this ONI Calculator is influenced by several key geyser attributes. Understanding them is vital for strategic planning.
- Emission Rate: This is the most direct factor. A higher rate means more resources per second of eruption. However, this value is often misleading without being averaged by an ONI Calculator.
- Eruption Periodicity: This is the ratio of eruption duration to the pause time within an active cycle. A geyser that erupts for 100s and pauses for 100s is much better than one that erupts for 100s and pauses for 500s, even if their emission rate is the same.
- Active/Dormant Ratio: This is perhaps the most critical long-term factor. A geyser that is active 90% of the time is far more valuable than one active only 30% of the time. The ONI Calculator excels at putting this into perspective.
- Resource Temperature: While not part of the mass calculation in this ONI Calculator, the output temperature is a major factor. A hot geyser (like a water geyser at 95°C) requires a cooling solution before use, adding complexity and power cost. Taming a volcano is a big task, and our guide to taming metal volcanoes can help.
- Storage Capacity: The results from the ONI Calculator tell you the average flow. Your ability to build sufficient gas, liquid, or solid storage determines if you can weather the dormant periods and fully utilize the active ones.
- Colony Consumption Rate: The final piece is your base’s needs. The data from an ONI Calculator is only useful when compared against your consumption. Are you using more water than your geysers produce on average? If so, you have a deficit that must be addressed.
Frequently Asked Questions (FAQ)
The eruption rate only applies for short bursts. The ONI Calculator averages this rate over the entire cycle, including pauses and long dormant periods, which significantly lowers the effective long-term output.
It’s highly discouraged. Geysers are intermittent. You should always use a buffer (a large tank or reservoir) to store the resource and draw from that, ensuring a stable supply for your machinery. This ONI Calculator helps you size that buffer.
A cycle is one in-game day, which lasts 600 seconds. Geyser active and dormant periods are measured in these cycles.
This calculator is as accurate as the data you input. It uses the exact formulas the game’s mechanics are based on to provide a mathematically correct average output.
Yes, it works for any geyser, vent, or volcano. Just enter its unique parameters. The output will be in mass (g/s or kg/s), but for volcanoes, you also need to manage the extreme heat of the output material (e.g., magma).
A Duplicant’s skill in Geology is required to analyze a geyser and reveal the stats you need to input into this ONI Calculator. Higher skills don’t change the geyser’s output but are needed for certain tasks. Learn more about Dupe skill management to optimize your colony.
If the pressure around a geyser’s output tiles is too high, it will stop erupting, even during its active period. You must pump the resource away to keep the pressure low. This state is not factored into the ONI Calculator, which assumes the geyser can erupt freely.
While this is a geyser-focused ONI Calculator, managing food is just as important. We have a dedicated Oxygen Not Included food calculator to help you plan your farm and kitchen setups.
Related Tools and Internal Resources
Continue optimizing your colony with our other guides and tools:
- Oxygen Not Included Food Calculator: Plan your duplicants’ meals and ensure your colony never goes hungry. A vital companion to our ONI Calculator.
- Guide to Electrolyzer Setups: Learn how to build self-sustaining oxygen modules (SPOMs) using the water output calculated here.
- Advanced Power Systems: Master power grids, transformers, and automation to efficiently power your late-game base.
- Dupe Skill Management Guide: Optimize your duplicants’ career paths to unlock their full potential.
- Efficient Base Designs: Browse and get inspiration from proven base layouts for different stages of the game.
- How to Tame Metal Volcanoes: A step-by-step guide to harnessing the immense power and resources of metal volcanoes.