Adopt Me Calculator — Pet Value, Trade Gap, and Fees

Quick Start

• Set rarity, age stage, neon/mega, and event/limited status.
• Enter demand (0–10) and ownership days.
• Optional: add your offer and their offer to see the fair trade gap after fees.
• Press Calculate. You’ll get Pet value (points) and Fair trade gap (points).

How It Works

1. Inputs (multipliers and scores) scale a base score to estimate pet value.
2. Demand adds a proportional boost; ownership days apply a freshness factor.
3. Trade fee is 2% of both sides combined; the gap is their offer minus yours.
4. Fair trade gap subtracts the fee, giving a cleaner comparison.

Inputs & Units

• Pet rarity multiplier: numeric (e.g., Common to Legendary mapping in the tool).
• Age stage multiplier: numeric (Newborn → Full Grown options provided).
• Neon/Mega multiplier: numeric (None, Neon, Mega Neon).
• Event/limited multiplier: numeric (None → Very limited/Vaulted).
• Demand score: 0–10 (integer or decimal allowed).
• Ownership days: days (≥0 recommended).
• Your offer value: pts (sum of what you offer).
• Their offer value: pts (sum of what they offer).

Formula / Method

Definitions: base = 10; demandWeight = 0.06; ageDecayHalfLifeDays = 180; tradeFeeRate = 0.02.

• demandBoost = 1 + demand × demandWeight
• freshness = 1 + (0.5)^(max(0, ageDays) / ageDecayHalfLifeDays)
• petPoints = round(base × rarity × age × neonMult × eventMult × demandBoost × freshness, 2)
• fee = round((tradeIn + tradeOut) × tradeFeeRate, 2)
• gap = round(tradeOut − tradeIn, 2)
• fairGap = round(gap − fee, 2)

Worked Example

Inputs:

• rarity = 6
• age = 1.8
• neonMult = 3.8
• eventMult = 1.6
• demand = 7
• ageDays = 45 days
• Your offer (tradeIn) = 220 pts
• Their offer (tradeOut) = 250 pts

Outputs:

• Pet value (petPoints) = 1129.55 pts
• Fair trade gap (fairGap) = 24.70 pts

Assumptions & Limitations

• Points are a comparative estimate, not an in-game currency.
• Demand is user-entered; market shifts can change results.
• Ownership days reduce freshness gradually via a half-life model.
• Fee is modeled at 2% of total trade volume (both sides).
• Rounding is to two decimals; small inputs can shift borderline outcomes.

Tips / Common Mistakes

• Do not mix multipliers; select exactly one per category (rarity, age, neon/event).
• Keep demand within 0–10; values outside this range distort results.
• Use non-negative days; negative days are clamped to 0 by the model.
• Compare fairGap, not raw gap, when fees matter.
• Recheck values after market events; demand can change quickly.

Note: This tool estimates relative trade value. Use judgment when negotiating.