Gacha Odds & Pity Simulator v5

Monte Carlo 5,000 simulations · Character/Weapon Pool · First Double Bonus · Auto-Simulate

Select Game Template
Lost last 50/50, next is guaranteed

Auto-simulates on parameter change, or click to re-run

Simulation Results
Average (Expected)
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pulls
50% Median
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pulls
80% Safe Line
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pulls
95% Extreme Line
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pulls
Minimum
—
pulls
Maximum
—
pulls
Cumulative Success Rate
Currency & Budget Calculator
Double primogems on first top-up
Pulls Still Needed
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pulls
Gems Still Needed
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gems
Est. Cost (TWD)
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NT$
Est. Cost (USD)
—
USD
Gaming Gear Recommendations

Upgrade your gaming setup with these curated picks!

Tutorial: Soft Pity & 50/50 Mechanics

What is Soft Pity?

Soft pity means your pull rate gradually increases after a certain threshold. For example, Genshin character banners start soft pity at pull 74, where the base 0.6% rate increases by 6% per pull until the hard pity at 90.

  • Character vs Weapon Pool: Character banners use 50/50 off-banner chance; weapon banners use 75/25. This tool precisely models both.
  • Hard Pity: At the cap, you are guaranteed to get the target item.
  • Soft Pity: Rate increases gradually after the threshold, significantly reducing expected pulls.
  • 50/50: After hitting, 50% chance it's the UP item, 50% off-banner. If off-banner, next hit is guaranteed UP.
  • 75/25: Weapon banner: 25% chance UP, 75% off-banner. If off-banner, next hit is guaranteed.

Monte Carlo Simulation

This tool runs 5,000 independent simulations per execution, balancing mobile performance with 99.5% statistical accuracy, calculating:

  • Expected Pulls: Average across all simulations.
  • 50% Median: The "average luck" threshold.
  • 80% Safe Line: 80% of players succeed within this pull count. Recommended as your budget baseline.
  • 95% Extreme Line: Worst-case scenario, recommended as your maximum budget ceiling.

Combine with the First Double Bonus option and Custom Rate feature for precise budgeting.

Disclaimer: This tool uses Monte Carlo simulation based on publicly disclosed game mechanics. Results are for budget planning reference only. Actual in-game results are determined by the game server's RNG and cannot be guaranteed.

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Gacha Odds Calculator 線上工具:運作機制與隱私解析

本工具把 Gacha Odds Calculator 的輸入解析、運算與輸出放在瀏覽器 JavaScript 執行,依頁面功能使用 Canvas、Web Audio、Web Crypto、原生 Blob 或純數學函式。檔案不會經過 GugoPro 上傳端點;遇到格式不符、空值或極端輸入時,介面會顯示錯誤並停止輸出。

3 步驟完成

  1. 上傳或輸入資料,先確認格式與大小。
  2. 依畫面配置頁碼、品質、欄位或輸出格式。
  3. 執行處理,檢查預覽與狀態後下載結果。

使用者常見問題

為什麼工具需要在瀏覽器處理?

本工具將檔案解析與輸出放在目前分頁,減少上傳等待與原始資料外洩風險;裝置記憶體不足時請分批處理。

輸入格式或數值錯誤時會怎樣?

工具會在執行前檢查副檔名、必要欄位與範圍;不符合條件時顯示可理解的提示,不會下載空白結果。

手機也能使用嗎?

可以,但 PDF、影像或多檔輸出會占用記憶體;手機建議降低解析度、縮小批次並保持分頁開啟至下載完成。