Stellaris Fleet Power Calculator

Calculator

Fleet name

Ship count

Total ships using this average design.

Command limit used

Used for power per command point.

Hull per ship

Average hull points per ship.

Armor per ship

Average armor points per ship.

Shields per ship

Average shield points per ship.

Weapon DPS per ship

Base combined weapon damage per day.

Alpha damage per ship

Opening volley value before rate effects.

Accuracy %

Average weapon accuracy.

Tracking %

Tracking counters enemy evasion.

Enemy evasion %

Expected target evasion.

Fire rate bonus %

All fire rate bonuses together.

Damage bonus %

All damage bonuses together.

Defense bonus %

Hull, armor, shield, aura, or doctrine bonus.

Shield regen per day

Average daily shield regeneration.

Armor hardening %

Quality bonus for armor survival.

Shield hardening %

Quality bonus for shield survival.

Repeatable tech bonus %

Late game repeatable combat gain.

Computer bonus %

Computer, stance, aura, and tactic gain.

Range bonus %

Long range gets a small opening advantage.

Admiral level

Each level adds a small command quality factor.

Formula Used

This page uses an estimator model for planning. It does not claim to reproduce hidden game code.

Hit Chance = Accuracy - max(0, Enemy Evasion - Tracking)

Effective DPS = Weapon DPS × Hit Chance × Offense Bonus

Offense Score = ((Effective DPS × 10) + (Alpha Damage × Hit Chance × 0.08)) × Range Factor

Defense Score = (Hull + Armor Quality + Shield Quality + Regen Score) × Defense Bonus ÷ 10

Fleet Power = (Offense Score + Defense Score) × Ship Count × Admiral Factor

How to Use This Calculator

Enter the average values for one ship design. Add the number of ships in the fleet. Include weapon DPS, defenses, accuracy, tracking, and bonuses. Use enemy evasion to model the target. Press the calculate button. The result appears above the form. Use CSV or PDF buttons to save the report.

Example Data Table

Fleet	Ships	DPS	Hull	Armor	Shields	Accuracy	Tracking	Estimated role
Corvette screen	40	18	300	150	120	82%	65%	Evasion counter
Cruiser line	18	55	1,500	1,200	950	80%	25%	Balanced force
Battleship core	10	140	3,000	2,500	2,200	75%	10%	Long range alpha

Advanced Fleet Power Planning

Stellaris fleet power is useful for fast comparison. It is not a perfect battle forecast. Combat depends on weapon range, counters, disengagement, admirals, terrain, and target design. This calculator gives a clear estimate from common combat inputs. It turns offense, defenses, accuracy, evasion, and bonuses into one score.

Why This Estimate Helps

A raw ship count can mislead players. A small fleet with strong weapons may beat a larger weak fleet. Shields can fail against bypass weapons. Armor may matter more against kinetic counters. Hull is important because destroyed ships stop dealing damage. The tool separates offense and defense so each weakness is visible.

Physics Style View

The calculator treats damage output like a rate. Weapon DPS is multiplied by hit chance. Hit chance uses accuracy, tracking, and enemy evasion. Alpha damage adds value for strong opening volleys. Defense is treated like effective durability. Hull, armor, shields, hardening, and regeneration raise survival time. The final score combines expected damage and expected durability.

How To Read Results

The fleet power result is an index. Use it to compare builds entered with the same method. Power per command point shows compact strength. A high number means each command slot carries more value. The offense share shows whether the fleet wins through damage. The defense share shows whether it wins through survival.

Practical Tips

Test several enemy evasion values. Corvettes need tracking. Battleships reward range and alpha damage. Add repeatable technology bonuses when comparing late game fleets. Include admiral level only when the fleet will use that leader. Keep input units consistent across all rows.

Limitations

The real game uses internal values and combat behavior. This page does not copy hidden game code. It gives an advanced planning model. It is best for loadout comparison, quick reports, and scenario testing. Use battle tests for final confirmation before risky wars.

Best Use Cases

Use the calculator before upgrading ship templates. Compare one mixed fleet with one focused fleet. Save each result as CSV for spreadsheets. Export PDF summaries for notes. Change one variable at a time. This makes the impact easier to understand. The best design is not always the highest score. Counters still decide many close fights during wars.

FAQs

Is this the exact Stellaris fleet power formula?

No. It is an advanced estimator. It uses visible combat values and weighted assumptions. Use it for planning, comparison, and reports, not exact internal prediction.

Why does enemy evasion matter?

Evasion reduces successful hits. Tracking counters that evasion. High tracking weapons are better against small fast ships. Low tracking weapons need slow targets.

What should I enter for mixed fleets?

Use average values across all ships. For better accuracy, calculate each ship class separately. Then compare the totals in a spreadsheet.

Why is alpha damage included?

Large opening shots can remove ships early. This lowers enemy damage output. The calculator gives alpha damage a smaller weight than sustained DPS.

Does shield regeneration increase fleet power?

Yes. Regeneration improves survival during longer battles. It matters less in short fights where ships die before shields can recover.

How do admiral levels affect the score?

Each admiral level adds a small command quality factor. This represents better tactics, traits, and fleet handling in a simple way.

Can I export the result?

Yes. After calculation, use the CSV button for spreadsheet data. Use the PDF button for a compact printable report.

Why is power per command point useful?

It shows compact strength. A high value means the fleet gets more combat value from each command slot. This helps compare dense and wide designs.