Dino Hunters Capture Rate Calculator

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How the Capture Rate Calculator works

The capture-rate calculator reads seven caller-supplied inputs and returns the effective per-attempt catch probability plus cost-to-confidence:

1. Rarity tier — Common, Uncommon, Rare, Epic, Legendary.
2. Capsule tier — Basic, Fine, Strong, Tech, Elite, Best, Master.
3. Player race — Skyborn, Boneborn, Shellwyrm, Emberwing, Firedrake, Voidwyrm, Skullwyrm.
4. Target HP percentage — 0–100 % of max HP (slider 0.0–1.0).
5. DoT / weaken stacks — 0–10 (Taser Gun stun, Poison Crossbow poison).
6. Confidence target — 50 %, 80 %, or 95 %.
7. Optional Coin balance — surfaces an affordability warning if you cannot fund the selected confidence.

The engine multiplies them in this order:

Step 1  p_base       = rarity_base_catch[rarity]                         (probability 0–1)
Step 2  race_mod     = race_capture_luck_modifier[race]                  (decimal, 0 if unverified)
Step 3  p_base_race  = p_base * (1 + race_mod)                           (probability 0–1)
Step 4  CL_capsule   = capsule_capture_luck[capsule_tier]                (Capture Luck points)
Step 5  CL_dot       = dot_stacks * 15                                   (Capture Luck points / stack)
Step 6  CL_eff       = CL_capsule + CL_dot                               (Capture Luck points)
Step 7  CL_mod       = min(0.95, CL_eff / 100)                           (probability, capped)
Step 8  p_after_cl   = min(0.99, p_base_race + CL_mod)                   (probability 0–0.99)
Step 9  hp_mult      = max(0.05, 1.0 - target_hp_pct * 0.5)              (multiplier 0.05–1.0)
Step 10 p_catch      = clamp(p_after_cl * hp_mult, 0.001, 0.99)          (probability)

p_catch is the per-attempt catch probability. The geometric mean and inverse-CDF math then turn it into expected attempts and attempts to 50 / 80 / 95 % confidence.

What the stacked-contribution table tells you

Each row of the table corresponds to one of the ten steps above. The “CL_eff” row is the strongest pure lever:

• Move from Strong (120 CL) to Elite (320 CL) and you push CL_eff from 120 to 320 — a +0.95 vs +0.32 CL_mod bump before the 0.95 cap kicks in.
• Move from full HP (1.0) to 0 HP and you double hp_mult, lifting p_catch by a factor of 2×.

The “p_after_cl” row is the most informative for Legendary captures — anything beyond 320 Capture Luck saturates the 0.95 cap and the only remaining lever is hp_mult.

Worked example

Inputs: Legendary rarity, 20 % target HP, Elite Capsule, Emberwing race, 1 DoT stack, 80 % confidence target.

• p_base = 0.01
• p_base_race = 0.0112 (× 1.12)
• CL_eff = 320 + 15 = 335
• CL_mod = 0.95 (capped)
• p_after_cl = 0.9612
• hp_mult = 0.90
• p_catch = 0.8651 (86.5 %)
• Expected attempts ≈ 1.16 capsules
• N(80 %) = 1 capsule = 7,200 Coins
• N(95 %) = 2 capsules = 14,400 Coins

Verdict: Elite clears a Legendary in 1–2 attempts at low HP. Master (700 CL, 90,000 Coins) buys a few extra percentage points and is rarely worth the 82,800-Coin delta.

Edge cases the tool handles

• Unknown rarity → defaults to Rare (0.15) with a visible warning.
• Unverified race bonus → applies 0.0 modifier and surfaces [INFERRED] race bonus unverified for {race}. Only Emberwing has a numerically verified bonus.
• Target HP = 0 → hp_mult = 1.0, so p_catch = p_after_cl capped at 0.99. Footnote: in-game capture prompt only triggers at 0 HP; the slider models the planning question.
• Target HP = 1.0 → hp_mult = 0.5, halving p_catch.
• Capture Luck overflow → CL_mod hard-capped at 0.95.
• Probability never reaches 1.0 → p_after_cl capped at 0.99; p_catch clamped to [0.001, 0.99].
• Confidence out of range → only 0.50 / 0.80 / 0.95 are supported; other values reject and fall back to 0.80.
• Tech Capsule selected → always renders the Robux-vs-Coin side panel (hard requirement).
• Insufficient Coins → emits an insufficient_coins flag and recommends the cheapest capsule one tier down whose p_catch is within 5 percentage points.
• Fossils → never enter capture math; they gate weapon unlocks only.
• Double Coins / Double Exp → bit-identical zero delta on p_catch. The toggles exist to kill the community misconception.
• Free capsules (Basic, Fine) → 0 Coin cost; calculator suppresses the cost panel and surfaces a time-cost note in minutes of farming.

Limitations

• The base rarity table (Common 0.60 → Legendary 0.01) is inferred from comparable Roblox simulator patterns. The on-screen in-game percentage is authoritative when the two disagree.
• Emberwing is the only race with a numerically verified bonus panel. Other races render [INFERRED] and contribute 0 %.
• The Capture-Luck → p_catch mapping (Step 7) and the linear HP penalty (Step 9) are inferred and may shift with future patches.

What to read next

• The capsule value comparison: Capsule ladder and pricing.
• Where races fit: Races and Emberwing bonuses.
• Companion article: Capture rate and capsules.

Sources and verification

Verification date: 2026-08-01. Calculator version: 1.0.0 (Dino Hunters wiki).