Catch Calculator Gen 4

Estimate Gen 4 catch odds with smart modifiers. Compare balls, throws, status, and encounters well. Download clean reports for easier capture decisions today quickly.

Calculator Inputs

Example Data Table

Target Max HP Current HP Catch Rate Ball Status Planned Throws Typical Use
Legendary16013TimerSleep30Long reset battle
Rare Cave Target1202045DuskParalysis12Cave route hunt
Common Route Target8040190GreatNone3Fast collection

Formula Used

The calculator uses a Gen 4 style capture model.

Modified catch value: a = floor(floor(((3M - 2H) × R × B) / (3M)) × S)

Shake value: b = floor(1048560 / fourth root(16711680 / a))

Single throw chance: P = (b / 65536)4

Chance after n throws: Pn = 1 - (1 - P)n

M is max HP. H is current HP. R is catch rate. B is ball modifier. S is status modifier.

How to Use This Calculator

Enter the target name for your report. Add max HP and current HP. Use a current HP value of one for a weakened target. Enter the species catch rate. Pick the ball and status condition. Add the current turn count for Quick, Timer, or Nest Ball logic. Press Calculate. Then download CSV or PDF when needed.

Advanced Catch Planning

A Gen 4 catch attempt feels simple during play. Behind that moment, several values combine. This calculator turns those values into a clear estimate. It helps compare balls, health, status, and repeated throws before you spend resources.

Why Health Matters

Lower current health improves the modified catch value. The tool uses maximum health and current health together. It rewards careful weakening without assuming impossible health states. One remaining hit point usually gives the best legal result.

Ball and Status Choices

Ball bonus can change the estimate strongly. Ultra, Dusk, Quick, and Timer options are included. A custom value is also available for special cases. Status also matters. Sleep and freeze give the largest listed bonus. Paralysis, burn, and poison give a smaller bonus.

Shake Checks

The first score estimates the modified catch number. Then the shake value is calculated. Four successful shake checks create a capture. The displayed single throw chance comes from those four checks. The planned throw chance shows the chance after several independent attempts.

Better Decisions

Use the table to compare common situations. Try the same target with different balls. Then adjust health and status. The expected captures field helps when planning many encounters. It is useful for route hunts, legendary resets, and resource management.

Practical Limits

This is a planning model. It does not guarantee a result. Random checks can still surprise you. Some special encounters may use unique rules. Enter the closest known values for best results. Export the report when you need a saved record or want to compare several attempts later.

Reading the Output

The result panel shows the chosen inputs first. This makes checking mistakes easy. The modified catch value explains whether the target is near automatic capture. The shake threshold shows how hard each shake check is. Higher values are better. The chance over planned throws assumes the same setup continues. Change the turn count when using Timer Ball.

Export Workflow

Use CSV for spreadsheets. Use PDF for quick sharing. Both exports include inputs, formulas, and core results. Keep one report per target. Then compare strategies before your next attempt.

For rare targets, small improvements matter. A status move or stronger ball may save many resets and items.

FAQs

What does this catch calculator estimate?

It estimates a Gen 4 style capture chance using HP, catch rate, ball bonus, status bonus, planned throws, and encounter count.

Does one remaining HP always help?

Yes, lower current HP improves the modified catch value. One HP is usually the strongest legal health setup for the formula.

Which status gives the best bonus?

Sleep and freeze use the highest listed status bonus. Paralysis, burn, and poison still improve the chance, but less strongly.

How is Timer Ball handled?

The Timer Ball modifier rises with turn count and is capped in the calculator. Increase turns to test longer battles.

Why is the result not guaranteed?

Capture uses random shake checks unless the modified catch value reaches the guarantee threshold or Master Ball is selected.

Can I enter a custom ball bonus?

Yes. Choose the custom ball option and enter your own modifier. This helps test special rules or house assumptions.

What does expected captures mean?

It multiplies the planned throw chance by your encounter count. It is a planning estimate, not a promise.

Do exports include the formula?

Yes. CSV and PDF reports include key inputs, core results, and formula notes for later comparison.

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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.