D100 Percentile Dice Roller
Roll a hundred-sided die for percentile checks and random tables.
Dice tray
1d6Ready to Roll Dice
Select your dice type and modifiers, then click Roll
Settings
History
No rolls yet. Start by rolling your first dice!
Percentile rolls without two d10s
A d100 roll gives a number from 1 to 100 and is used for percentile checks: skill rolls in Call of Cthulhu, wild magic and treasure tables in D&D, random encounter tables, or any "X% chance" event in a game.
At the table, players usually roll two ten-sided dice, one for tens and one for units, and argue about which is which. This roller skips that: one click gives a fair result where every value from 1 to 100 has a 1% chance. Add a modifier if your system uses one.
Use the roll history to keep track of results during a session, or switch to D20 and other dice whenever you need them.
Frequently asked questions
How does a d100 work?
It produces a number from 1 to 100 with equal probability, the same as rolling two d10s for tens and units.
Is 100 a possible result?
Yes. Results range from 1 to 100 inclusive.
Which games use percentile dice?
Call of Cthulhu, Warhammer Fantasy Roleplay and many D&D random tables, among others.
More Dice Roller presets
Common Use Cases
D&D and RPGs
Attack rolls, ability checks, saving throws and initiative — with natural 20 detection on the D20.
Board Games
Monopoly, Yahtzee, Backgammon, Catan — when the physical dice rolled under the couch.
Random Decisions & Probability
Settle disputes, pick turn order, or teach probability — every side has an equal chance.
How It Works
Pick a die type from D4 to D100, choose how many dice to roll (up to 20) and add a positive or negative modifier for ability checks, attack and damage rolls. The tray shows every die and the total, the standard notation (for example 3d6+2) appears above it, and quick presets cover common rolls such as 1d20, 2d20 for advantage and 3d6 for ability scores. Each roll is saved to your session history with a timestamp and can be copied in one click to share in Discord or a group chat. Free, no registration, and it works on phones, tablets and desktops.
Features
- ✅ All standard RPG dice (D4, D6, D8, D10, D12, D20, D100)
- ✅ Roll multiple dice simultaneously (up to 20 dice)
- ✅ Add positive or negative modifiers to rolls
- ✅ Smooth visual rolling animation
- ✅ Complete roll history with timestamps
- ✅ Copy results to clipboard for easy sharing
Popular Tools
What is an Online Dice Roller?
An online dice roller simulates physical dice with a random number generator. This one supports all the standard polyhedral dice used in tabletop games: D4, D6, D8, D10, D12, D20 and D100 percentile dice. Whether you play Dungeons & Dragons 5e, Pathfinder, Call of Cthulhu or a family board game, you get instant results without physical dice. Every roll uses your browser's cryptographically secure random number generator, so each face of each die has exactly the same chance.
Choose a die type, set how many dice to roll (up to 20 at once) and add a modifier if your roll needs one. When you roll 3d6, the tool generates three independent numbers from 1 to 6 and shows each die together with the total; with a modifier such as +5, the bonus is added to the sum automatically. The current roll is written in standard RPG notation above the tray, quick presets cover the most common combinations, and a short rolling animation plays before the result appears. The history keeps every roll of the session with a timestamp.
Players roll a D20 for attack rolls, ability checks and saving throws, and two D20s for advantage or disadvantage. Dungeon masters use it for NPC actions, random encounter and treasure tables, and damage for groups of monsters. Because the randomness comes from a secure generator rather than a worn physical die, nobody can argue about loaded dice. It is just as handy for online sessions on Discord or any virtual tabletop where players can't roll together, and for Monopoly, Yahtzee, Backgammon, Risk or Catan when the real dice have gone missing.
The dice roller is free and needs no registration, download or installation: select your dice, add a modifier and press roll. It works on desktop computers, tablets and phones, and the copy button lets you paste results straight into your group chat. Each roll uses one die type; for mixed rolls such as 8d6 plus 2d8, roll each group separately and add the totals.