Terraria Reforge Cost Estimator
How much will reforging cost? Enter your item type and sell value, apply any discounts, and see expected cost to hit the best-in-slot prefix.
Item Details
Hover item in inventory to see sell price
Cost per Attempt
1g 66s 66c
Expected Total
26g 66s 56c
~16 attempts avg
80th Percentile
42g 66s 50c
80% chance within this
95th Percentile
79g 99s 68c
95% chance within this
Formula: cost per attempt = (sell price × 5) ÷ 3. Pool size = 16 (equal probability per modifier). Expected attempts = pool size.
Best-in-Slot Prefixes
| Type | Best Prefix | Bonuses | Pool |
|---|---|---|---|
| Melee | Legendary | +15% dmg, +15% speed, +15% crit, +15% knockback | 16 |
| Ranged | Unreal | +15% dmg, +15% speed, +15% crit, +15% velocity | 12 |
| Magic | Mythical | +15% dmg, +10% speed, +15% crit, –15% mana, +15% kb | 12 |
| Summon | Fabled | Best summon prefix (1.4.5+) | 13 |
| Accessory | Menacing / Warding | +4% damage or +4 defense (playstyle dependent) | 19 |
Getting the Best Reforge Discount
- ✓ Place the Goblin Tinkerer in Underground biome with the Mechanic nearby for the loved-neighbor + loved-biome discount (~83% of base cost).
- ✓ Equip the Discount Card (rare drop from Pirate enemies) for an additional ×0.80 multiplier.
- ✓ Combined (happy Tinkerer + Discount Card): approximately 67% of the base reforge cost.
- ✓ Costs are capped at 75%–150% of base, but discounts reduce the starting point before the cap.
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