Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Loot Drop Probability Calculator

Calculates the cumulative probability of getting at least one of a desired item across multiple independent attempts at a given per-attempt drop rate. Applies to gaming loot drops, dice-roll board game outcomes, and any binomial 'at least one success' problem.

Drop Rate (%)

Number of Attempts (attempts)

Fill in the required fields to see your result.

Gaming

Dungeon Clear Time Calculator

Estimates the total time to clear a tabletop or video-game dungeon by combining the number of rooms, average time per room, and a separate boss-fight time. Useful for D&D/Pathfinder game-night planning, board-game session budgeting, or speedrun pacing.

Number of Rooms (rooms)

Average Time per Room (minutes)

Boss Fight Time (minutes)

Fill in the required fields to see your result.

Key differences

	Loot Drop Probability Calculator	Dungeon Clear Time Calculator
Category	Gaming	Gaming
Inputs required	2	3
Result	Probability (%)	Total Clear Time (minutes)
What it does	Calculates the cumulative probability of getting at least one of a desired item across multiple independent attempts at a given per-attempt drop rate. Applies to gaming loot drops, dice-roll board game outcomes, and any binomial 'at least one success' problem.	Estimates the total time to clear a tabletop or video-game dungeon by combining the number of rooms, average time per room, and a separate boss-fight time. Useful for D&D/Pathfinder game-night planning, board-game session budgeting, or speedrun pacing.