Dice Roller Online (Free) - Roll d4 to d100

Lost the dice for game night, or running a tabletop campaign from your laptop? A virtual dice roller gives you fair, random rolls with no physical dice required. This guide shows you how to roll dice online for free with the Dice Roller, how the randomness works, and how to use it for board games, Dungeons and Dragons, and quick decisions. It runs entirely in your browser, so you can roll a d20 or a fistful of d6 in seconds on any phone or computer.

What an online dice roller is and how it works

An online dice roller is a small program that simulates throwing physical dice. Instead of tumbling plastic, it asks your browser for a random number for each die and maps it onto the faces. A six-sided die (a d6) returns a whole number from 1 to 6, a d20 returns 1 to 20, and so on. Each roll is independent, so a previous result never influences the next one, exactly like real dice.

The randomness comes from your browser's built-in random number generator, which produces values with no pattern you can predict or game. Because the work happens on your own device, there is no waiting on a server and no way for a result to be tampered with after you roll. You see every individual die plus the combined total, which is handy when a game asks you to add several dice together.

How to use the Dice Roller

Rolling takes only a few clicks:

1. Open the Dice Roller in any browser.
2. Choose the type of die you need, from a 4-sided d4 up to a 100-sided d100.
3. Set how many dice to roll at once if you need more than one.
4. Press the roll button.
5. Read each individual result and the total underneath.

Want another throw? Just roll again. There is nothing to install and no sign-up, so it is ready the moment the page loads.

Common dice and what they are used for

Tabletop games use a standard set of dice, each written with a letter d (for die) followed by its number of sides:

The d20 is the star of Dungeons and Dragons, where you roll it to see whether an attack hits or a skill check succeeds.

Real use cases

A virtual dice roller is useful far beyond RPGs:

• Play board games when the physical dice have gone missing.
• Run a tabletop campaign on a video call where everyone needs to see fair rolls.
• Settle a friendly decision, like who goes first, with a quick high-roll-wins throw.
• Teach probability in a classroom by rolling many dice and watching the totals cluster.
• Generate random numbers in a fixed range for a game you are designing.

If you need a plain random number rather than dice faces, the Random Number Generator lets you set any minimum and maximum, and the Random Picker chooses from a list of names or options.

Tips and common mistakes

A few pointers help you get the most from virtual dice:

• Match the die to the game. If the rules say roll 2d6, choose the d6 and set the count to two so the total is correct.
• Read the total, not just one die, when a game adds several dice together.
• Do not expect streaks to be impossible. Genuine randomness produces runs of high or low numbers sometimes, which feels surprising but is normal.
• For percentages, a d100 gives you a value from 1 to 100 directly, which is simpler than rolling two d10s.

The most common mistake is forgetting to set the number of dice, so you roll one when the game wanted several.

Privacy: every roll stays on your device

The Dice Roller runs completely in your browser. Each result is generated locally on your phone or computer, and nothing about your rolls is sent to a server or stored anywhere. There is no account, no tracking of your game, and no log of your results.

That makes it private and fast, with no network round trip between pressing roll and seeing the outcome. Browse more free utilities on the tools page or the developer tools category, all of which run the same way: in your browser, for free.