Calculator Inputs
Example Data Table
| Ore | Units | Base Yield | Skills | Implant | Tax | Use Case |
|---|---|---|---|---|---|---|
| Veldspar | 100,000 | 50% | 5 / 5 / 5 | 4% | 0% | Clean comparison against selling ore. |
| Scordite | 250,000 | 54% | 4 / 4 / 4 | 2% | 1% | High security structure estimate. |
| Manual Ore | 10,000 | 60.48% | 5 / 5 / 5 | 4% | 0.5% | Custom moon ore or updated game data. |
Formula Used
The calculator first finds processable batches. It divides ore units by the batch size. Extra units are shown as unused units.
Effective yield = Base Yield × (1 + 0.03 × Reprocessing) × (1 + 0.02 × Reprocessing Efficiency) × (1 + 0.02 × Ore Processing) × (1 + Implant Bonus).
When structure mode is used, base yield is estimated as: (50 + Rig Modifier) × (1 + Structure Bonus) × (1 + Security Bonus).
Refined mineral units equal: Mineral Per Batch × Batches × Variant Multiplier × Effective Yield. Value equals refined units multiplied by mineral price. Net value subtracts facility tax, market fee, and hauling fee.
How to Use This Calculator
- Select an ore type or choose Manual Ore.
- Enter your ore units and batch size.
- Set the ore variant yield percentage.
- Enter base yield or use structure formula mode.
- Add skill levels, implant bonus, taxes, and fees.
- Review mineral prices and adjust them for your market.
- Press Calculate Refining.
- Use CSV or PDF export to save the result.
Ore Refining Planning Guide
Why refining math matters
Ore refining can look simple. It is not always simple. A small yield change can move millions of ISK. Skills matter. Structures matter. Taxes matter too. This calculator helps you compare those parts before you move ore or sell minerals.
Start with clean ore data
Use the preset table for quick estimates. Use manual values for exact work. Game data may change over time. Market tools may also show different mineral values. For best results, copy current mineral outputs into the mineral per batch fields. Then enter prices from your preferred trade hub.
Compare facility choices
A station with low base yield may be convenient. A refinery with better bonuses may pay more. The difference grows when you refine large stacks. Use manual base yield when you already know the facility number. Use structure mode when you want to test rig, structure, and security effects.
Measure real profit
Refining output is only one part of profit. You may also pay facility tax. You may pay market fees after selling minerals. You may spend time or ISK on hauling. Add those rates before deciding. The final profit field compares net mineral value against ore cost. A positive number favors refining. A negative number favors selling ore, compressing it, or waiting for better prices.
Use exports for planning
CSV export is useful for spreadsheets. PDF export is useful for records, hauling notes, or corporation reports. Save different versions for different stations. Compare them side by side. This turns refining into a clear business decision instead of a guess.
FAQs
1. What does effective yield mean?
Effective yield is the final refining percentage after facility yield, skills, and implant bonuses are applied.
2. Why are some ore units unused?
Ore is refined in batches. Units below the required batch size remain unused and are reported separately.
3. Can I use this for moon ore?
Yes. Choose Manual Ore, then enter the correct mineral amounts per batch for your moon ore.
4. Should I use manual base yield?
Use manual base yield when your refinery window already shows a known facility yield.
5. What is the ore variant yield field?
It adjusts base mineral output for richer ore variants. Use 100 for normal ore.
6. Are mineral prices automatic?
No. Enter current market prices from your chosen trade hub or internal corporation pricing sheet.
7. Why include hauling and market fees?
They reduce real profit. Adding them gives a better comparison between selling ore and selling minerals.
8. Can I update the ore presets?
Yes. Edit the ore preset array near the top of the file with your latest mineral data.