Need a 3-sided die for a homebrew game, a d20 for tabletop RPGs, or just want to flip a decision to chance? This dice roller handles any number of sides and any number of dice at once — no physical dice required.
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What Is an Online Dice Roller?
An online dice roller simulates rolling one or more dice, instantly returning a random result for each die. Instead of being limited to whatever physical dice you own, you can roll anything from a standard 6-sided die to a 100-sided die, or something a physical dice set doesn’t even include — like a 3-sided or 5-sided die.
Why a 3-Sided Die Needs to Be Digital
A true 3-sided die is one of the most-searched dice types, for a good reason: it’s genuinely hard to make as a fair physical object. Dice fairness normally comes from symmetry — a standard 6-sided cube, or the Platonic solids used for D4, D8, D12, and D20, all have faces that are identical in shape and equally likely to land up. There’s no simple 3-dimensional solid with exactly three symmetric faces, which is why you’ll rarely find a physical 3-sided die that rolls as fairly as a cube does.
A digital roller sidesteps the problem entirely — it doesn’t need a physical shape at all, just a random number generator that picks 1, 2, or 3 with equal probability. That’s exactly what the calculator above does when you select D3 or type “3” into the sides field.
Common Dice Types Explained
| Die | Typical Use |
|---|---|
| D3 | Homebrew tabletop rules, quick 3-way decisions |
| D4 | Tabletop RPGs (small weapon damage, spell effects) |
| D6 | Classic board games, RPG damage rolls |
| D8 / D10 | Tabletop RPGs, percentile rolls (two D10s = D100) |
| D12 | Tabletop RPGs (larger weapon damage) |
| D20 | Core roll for most modern tabletop RPGs |
| D100 | Percentile-based systems, random tables |
How the Randomization Works
Each roll uses your browser’s built-in random number generator to pick a value between 1 and however many sides you’ve set, with every number equally likely. This is suitable for games, decision-making, and casual use. It is not intended for regulated gambling, official lottery drawings, or any context requiring cryptographically certified randomness.
Common Uses
- Tabletop RPGs — Dungeons & Dragons, Pathfinder, and other systems that need d4 through d20 rolls
- Board games — replace a lost or forgotten physical die instantly
- Decision-making — flip a 3-way or 5-way choice instead of a coin flip
- Classroom activities — random group assignment, probability lessons
- Homebrew game design — test odds for dice types that don’t physically exist, like a D3 or D7
Dice Roller FAQs
How do I roll a 3-sided die?
Click the “D3” preset above, or type 3 into the “Number of sides” field, then hit Roll. You’ll get a random result of 1, 2, or 3.
Can I roll multiple dice at once?
Yes — set “Number of dice” to however many you need (up to 20 at a time). Each die is rolled independently, and the total is added up automatically.
What is a D100 used for?
A D100, or percentile die, returns a number from 1 to 100 and is commonly used for probability tables and percentage-based outcomes in tabletop games. It’s traditionally simulated by rolling two 10-sided dice together — one for the tens digit, one for the ones — which this roller replicates in a single click.
Is this dice roller truly random?
Each result is generated independently with equal probability across all sides, suitable for games and everyday decision-making. It does not use cryptographically secure randomness and shouldn’t be relied on for regulated gambling or official drawings.
Can I roll dice with an unusual number of sides, like 5 or 7?
Yes — enter any number of sides from 2 upward in the “Number of sides” field. This works for dice that don’t exist as physical objects, like a 5-sided or 7-sided die.
Conclusion
Whether you need a single d20 for your next RPG turn or a dozen d6s for a board game, a digital roller gets you an instant, fair result without digging through a dice bag — and it’s the only practical way to roll dice types, like a D3, that don’t really work as physical objects.
Set your sides and dice count above and give it a roll.
For entertainment, gaming, and decision-making purposes only. Not intended for regulated gambling, wagering, or official drawings.
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