1. What is a Dice Roller?

A dice roller simulates the random rolls of polyhedral dice commonly used in tabletop role-playing games like Dungeons & Dragons. It provides fair, unbiased results for game mechanics.

2. How Does the Calculator Work?

The calculator uses PHP's random number generator:

Where:

• \( N \) — Number of sides on the die (4, 6, 8, etc.)
• Multiple dice are summed together
• Modifiers are added to the total

Explanation: For each die, the calculator generates a random integer between 1 and the number of sides specified.

3. Common Dice Types

Standard RPG Dice:

• d4 - Four-sided die (pyramid shape)
• d6 - Standard cube die
• d8 - Eight-sided die
• d10 - Ten-sided die (0-9 or 1-10)
• d12 - Twelve-sided die
• d20 - Twenty-sided die (primary D&D die)
• d100 - Typically rolled as two d10s (percentile dice)

4. Using the Calculator

Steps:

1. Select the type of die (d4-d100)
2. Enter number of dice to roll (1-100)
3. Add any modifier to apply to the total
4. Click "Roll Dice" to get results

5. Frequently Asked Questions (FAQ)

Q1: How random are the results?
A: The calculator uses PHP's random number generator which is suitable for game purposes, though not cryptographically secure.

Q2: What are modifiers used for?
A: Modifiers represent bonuses or penalties from character abilities, spells, or situational effects in the game.

Q3: Can I roll multiple types of dice at once?
A: This version rolls one type at a time. For mixed rolls, you'll need to calculate each type separately and sum the results.

Q4: What's the advantage over physical dice?
A: Digital rollers eliminate bias, can't be lost, and are convenient for online play or when physical dice aren't available.

Q5: How do percentile dice (d100) work?
A: A d100 represents 1-100 (or 0-99). Typically rolled as two d10s where one represents the tens digit and the other the ones digit.