Calculators

Lanterns Roblox Boss Damage Calculator

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Enter the boss’s total health and your personal damage to see your contribution, chest damage target, and remaining damage.

Deal at least 5% of the boss’s total health in damage to meet the personal chest requirement. For a 57,084-HP encounter, the target is 2,854.2 damage, or 2,855 when planning in whole damage units. Earned chests go to Inventory → Chests.

Calculate the stated personal boss-chest contribution requirement using encounter health and personal damage.

Contribution = 100 × personal damage / boss health. Target = boss health × threshold / 100. Remaining damage = max(0, target − personal damage).

  • Use the encounter's total boss-health value and personal damage measured on the same basis.
  • Reaching the target meets the stated damage requirement.
  • The whole-number target rounds upward for planning; it does not describe HUD rounding.

Calculate Your Personal Chest Target

  1. Enter Boss health using the encounter’s total HP, not its remaining health.
  2. Enter Your damage using only your personal damage counted for that same encounter.
  3. Read Your contribution to check your percentage, then Remaining damage to see how far you are from the chest requirement.

Damage target gives the exact threshold. Whole-number damage target rounds it upward for planning. A remaining damage result of 0 means your entered damage meets or exceeds the requirement.

Use the boss overview to find an encounter, or the Pumpkin King guide for summoning and combat steps.

Read the DAMAGE Panel

During the fight, check your percentage in the DAMAGE panel. Its 5%+ requirement means at least 5%: exactly 5% meets the damage threshold.

For a Pumpkin King encounter with 57,084 total HP, the calculation is 57,084 × 0.05 = 2,854.2 damage. With 2,000 personal damage, your contribution is approximately 3.50%, leaving 854.2 damage to reach the exact target. If you plan in whole damage units, aim for 2,855 total damage, or 855 more from that starting point.

Use your own encounter’s total health; 57,084 HP is the example encounter value. The upward rounding is a planning aid, not a rule for how the game rounds the percentage displayed on its HUD.

Pumpkin King fight with total boss health and the personal contribution DAMAGE panel visible.

Where to Find Your Chest

After the boss is defeated, open Inventory → Chests to find your earned chest. You can leave it there and open it later; see the chest guide for opening instructions and chest types.

If you did not receive a chest, check your participation and contribution:

  • Below the damage threshold: your contribution did not meet the personal chest requirement.
  • Did not participate: a Moon raid completion screen can still appear. Reward labels in its ranking list, including CHEST + LANTERN CHEST, do not mean those rewards were awarded to you.

For travel and joining an active encounter, follow the Moon raid guide.

Inventory with Chests selected and the boss damage requirement displayed in the empty storage area.
Lanterns Roblox Boss Damage Calculator — illustrated cover

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