ClockTools Randomizer Tools
Roll A Dice Online
Roll one die or build a complete dice pool with animated results, d4 through d100 dice, custom sides, advanced RPG notation, advantage, history, statistics, and shareable setups.
What Is An Online Dice Roller?
Our online dice roller gives you the familiar action of rolling physical dice inside your browser. We cover quick d6 rolls, the full polyhedral family from d4 through d100, custom-sided dice, several dice at once, mixed pools, modifiers, keep-highest and keep-lowest rules, exploding dice, local history, and session statistics.
We generate your random values with the browser Web Crypto source and a dedicated dice-notation engine. We conceal every result while the cube tumbles and the polyhedral dice spin in place, then reveal the faces and total only after the motion finishes. A slow device, dropped visual frame, or reduced-motion setting therefore does not choose the outcome.
How Do You Roll Dice Online With ClockTools?
- Choose one of our quick dice, select a preset, or enter notation such as 2d6, 1d20+5, or 4d6kh3.
- Build a mixed pool with our controls when your game, lesson, or probability exercise needs different dice together.
- Press Roll Dice and let our animation keep every value concealed until all the dice have settled.
- Use our local history and session statistics when you want to check earlier results or compare repeated rolls.
- Copy your result or share the current setup so another person can open the same dice notation.
Which Dice And Rules Can You Use?
We include d4, d6, d8, d10, d12, d20, d100, and custom dice with 2 through 1,000 sides. You can use notation such as 2d6 for two six-sided dice, 1d20+5 for a modifier, 2d20kh1 for advantage, 2d20kl1 for disadvantage, or 4d6kh3 to roll four dice while keeping the highest three.
We built that range for board games, tabletop role-playing games, probability lessons, classroom selectors, simulations, creative prompts, and low-stakes random choices. Our fullscreen mode helps a group see the final reveal, while sharing carries your setup to another device without fixing the next outcome.
Why Is Roll History Useful?
We record your recent notation, totals, individual values, and timestamps in the current browser. Our session statistics show the number of rolls and dice, average total, highest result, and lowest result. You can use those records to check an earlier roll or create a small classroom dataset for comparing observed outcomes with theoretical probability.
Online Dice Roller FAQ
Is this online dice roller free?
Yes. Our dice roller is free, requires no account, and supports standard dice, custom-sided dice, mixed pools, advanced notation, history, statistics, sound, and shareable setups.
Are the dice rolls random?
Yes. We use the browser Web Crypto random source through a dedicated dice-notation engine. We generate every roll independently on your device rather than selecting a value from an animation frame.
Can I roll more than one die?
Yes. You can roll up to 50 dice in one expression, repeat a quick die, or combine groups such as 2d6+1d20.
Can I roll d4, d8, d10, d12, d20, and d100 dice?
Yes. We include quick controls for d4, d6, d8, d10, d12, d20, and d100. You can also create a custom die with 2 through 1,000 sides.
What does 4d6kh3 mean?
It means roll four six-sided dice and keep the highest three. The lower result is marked as dropped and does not contribute to the total.
What are advantage and disadvantage rolls?
Advantage rolls two d20 dice and keeps the higher result, while disadvantage keeps the lower result. We created dedicated presets so you can build either expression instantly.
Can I share a dice setup?
Yes. The shared link carries the current notation so another person can open the same setup and make a fresh independent roll.
Does the dice roller work on mobile?
Yes. We designed our roller for phones and tablets with touch controls, responsive animation, optional vibration, history, statistics, sharing, and fullscreen rolling.