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About this online dice roller
This free dice roller lets you roll up to 10 dice with 2 to 1000 sides, add a modifier, and roll with advantage or disadvantage. It works for Dungeons & Dragons, Pathfinder, Monopoly, Yahtzee, classroom probability lessons and quick random decisions, with no sign-up or download.
How to use it
- Enter how many dice to roll (1–10) and pick D4, D6, D8, D10, D12, D20, D100 or Custom.
- Add a modifier if your game needs one, such as +5 on a d20 attack.
- Choose Normal, Advantage or Disadvantage.
- Press Roll dice, or press Enter in any number field. The total, average, highest and lowest roll appear instantly.
- Save any setup as a preset to roll it again with one tap.
Best practices
- Roll in front of your group and read the total aloud so everyone can check it.
- Use advantage or disadvantage instead of stacking small modifiers.
- Save presets for repeat rolls such as 1d20+5 or 8d6 so you never mistype them.
- Check the tables below before setting a difficulty class. A DC 15 is a 30% chance on a plain d20.
- Use a custom die for unusual lists, such as a d30 or d1000 random table.
Is it fair?
Yes. Every roll uses your browser’s cryptographic random generator with rejection sampling, so each face has exactly the same chance. Nothing is sent to a server.
50 dice probability tables
We built 50 free dice probability reference tables for this page: face odds for every standard die, sum distributions from 2d4 to 5d6, d20 chances with advantage and disadvantage, 4d6 ability scores, Fate dice, and game odds for D&D, craps, Yahtzee and Catan. Use them to set fair challenges, check your odds or teach probability.
Jump to a table
FAQ
Are the rolls truly random?
Yes. Each roll uses crypto.getRandomValues with rejection sampling, which removes modulo bias.
What do advantage and disadvantage mean?
Advantage keeps the higher of two rolls; disadvantage keeps the lower. Both are common in Dungeons & Dragons.