Compare calculators

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

Virtual Dice Roller

Roll N dice of any size (d4, d6, d20, etc.) and get the sum. Reproduces the standard tabletop-RPG 'NdX' notation used in D&D, Pathfinder, and probability homework.

Number of dice

Sides per die

Fill in the required fields to see your result.

Gaming

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.

Key differences

	Virtual Dice Roller	Loot Drop Probability Calculator
Category	Gaming	Gaming
Inputs required	2	2
Result	Roll	Probability (%)
What it does	Roll N dice of any size (d4, d6, d20, etc.) and get the sum. Reproduces the standard tabletop-RPG 'NdX' notation used in D&D, Pathfinder, and probability homework.	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.