How to Use Our Dice Roller for Board Games and RPGs

When you need to roll a d20 for a critical attack, a d6 for a board game turn, or any combination of dice for an RPG session, our dice roller gets it done instantly and fairly. Whether you're running a Dungeons & Dragons campaign with friends across the country, playing a competitive board game where turn order matters, or settling a friendly dispute with random chance, you want results you can trust. We'll walk you through everything from entering your roll to understanding the odds behind the results.

Our dice roller uses cryptographically secure randomization via the Web Crypto API to ensure fair results every time. No loaded dice, no patterns, no bias, no way for anyone to manipulate the outcome. If you're new to using a digital roller, transitioning from physical dice, or just want to make sure you're getting the most out of ours, this guide covers every step.

What Is a Dice Roller & When Do You Actually Need One?

A dice roller is a tool that simulates throwing physical dice without having the physical dice on hand. You tell it how many dice to roll, which type (d4, d6, d12, d20, d100, etc.), and any bonuses or penalties you want to apply. It then gives you a fair, random result instantly.

You actually need a digital roller when:

Playing remotely — you and your friends are in different cities playing D&D over video chat. Physical dice aren't available, or got lost in shipping. An online roller solves this instantly.
Large groups — eight people at a game night, and dice keep rolling under furniture or getting mixed up. One tool everyone can see on screen is clearer and faster.
Speed — a board game requires 50+ rolls in one session. Clicking a button is faster than hunting for dice after every turn.
Recording results — you're tracking campaign history, analyzing your luck, or you've convinced yourself your campaign's dice seem cursed and you want documentation. Digital rolls leave a clear log.
Fairness in competition — everyone rolls in the same tool, so no one can claim favoritism or manipulation. Transparency removes doubt immediately.
Probability testing — you're curious about actual odds in a game and want to simulate dozens of rolls to verify them. The tool gives you consistent, repeatable results.

Physical dice are absolutely fine for casual play — there's something satisfying about holding real polyhedrons. But a digital roller is essential for fairness in remote play and genuinely useful for speed anywhere.

Step-by-Step: How to Use the Roller

Step 1: Choose your dice type Start by selecting which dice you need. Most rollers support d4, d6, d8, d10, d12, d20, and d100. Some offer custom ranges too (roll 1–50, for example). In D&D and Pathfinder, you'll mostly use d4, d6, d8, d10, d12, and d20. Standard board games typically stick to d6 or d20, depending on the game's design.

Step 2: Set the number of dice How many are you rolling? A weapon damage roll might be 2d6 (two six-sided dice). A full party's initiative is 5d20 (five players rolling at once). Some tools let you roll multiple pools simultaneously, which is faster if you're rolling for several people or multiple actions at once.

Step 3: Add modifiers (bonuses or penalties) Many rolls in RPGs include a bonus or penalty applied after the dice result. A d20 attack with a +5 modifier means "roll one d20 and add 5 to the result." Some rollers let you input the modifier directly, so you see the final number at once. Input it in the tool if you can — it's clearer and faster.

Step 4: Hit the roll button Press it, and results appear instantly. You'll usually see each individual die's result (so "you rolled a 14 and a 9 on 2d6"), the sum of those results, any modifiers applied, and the final total.

Step 5: Read and respond Now you know the result. Is it a success? A critical hit? Did your attack beat the target's AC? Did your initiative outpace the other players? The tension comes from not knowing the outcome beforehand. That's the whole point — that's why games use dice at all. Most rolls take under 5 seconds from input to final result.

Understanding Dice Notation

If you've seen expressions like "3d8+5" and wondered what it means, here's a quick reference:

d6 = one six-sided die (standard die, 1–6 range)
2d6 = roll two six-sided dice, add them together (2–12 total)
3d8+5 = roll three eight-sided dice, add them together, then add 5 to the result
d20-3 = roll one twenty-sided die, subtract 3 from the result
2d10 = two ten-sided dice, often used for percentiles

The format is always: [number of dice]d[sides] [+ or - modifier]. Most board games and RPGs use this notation, so once you've seen a few rolls, you'll recognize it instantly. It's a universal shorthand in tabletop gaming, and you'll become fluent quickly.

Tips for Fair Rolling & Better Gameplay

Use the same tool for everyone in remote play If your group is playing online, everyone should roll using the same dice roller. This removes any suspicion that someone is using a tool that favors them. Transparency matters. Many rollers have a "share this roll" link so all players see the result in real time.

Roll openly when stakes matter For a serious campaign decision or close game outcome, let everyone see the roll happen. One person rolling privately and announcing "I got a 17" leaves room for doubt. Shared visibility builds trust immediately.

Roll once and commit Old gaming etiquette: roll the dice, look at the result, live with it. No retries. The suspense and uncertainty are what make games tense and fun.

Batch rolls for speed If your five-person party all needs initiative, roll 5d20 in one go rather than clicking five separate times. It's faster, more dramatic, and keeps the game flowing.

Keep a roll log for fun Track unusual results — five natural 20s in one session is funny and worth remembering, even if it's statistically normal. Logging gives you bragging rights and creates campaign history. (The good news: the roller does the maths. The bad news: the maths does the maths. Either way, your results are locked in.)

Frequently Asked Questions

How random are the results? Can you guarantee fairness? Yes, completely. Our roller uses a cryptographically secure pseudo-random number generator (CSPRNG), meeting the statistical randomness requirements outlined in NIST SP 800-22. This is the same method used for secure online banking and encryption. Each result is fair, unbiased, and impossible to predict in advance.

What if I want to verify the results are actually random? Test it yourself. Roll a d6 at least 100 times (ideally 1,000) and count how often each number appears. Over a large sample, each result should appear roughly equally — about 1/6 of the time. If one number appears way more often, something's broken. Our roller passes this test consistently.

Can someone rig or cheat the roller? Not on our site. The randomness happens on secure servers, not on your computer, so you can't manipulate the local code to change outcomes. If you were building your own roller in JavaScript, you'd need proper cryptographic methods, not the default Math.random(), which isn't fair for decisions that matter.

What if I need to roll something unusual, like a d37 or 2d15? Our roller supports a wide range of standard dice and custom ranges. Use the "roll between X and Y" option and set the range you need. It works the same way — random, fair, instant.

How do I save or log my rolls? Some RPG campaign trackers (like Roll20 or Fantasy Grounds) integrate with standard rollers. You can also screenshot results, write them down, or keep a text file of important rolls. For casual play, pen and paper next to the screen works fine. For serious campaigns, a campaign management tool with integrated rolling is worth the investment.

What's the real difference between rolling online and rolling physical dice? Physical dice can get lost, wear out, or become suspect over time. Online rolling is faster, fairer (no one can claim the table was tilted or a die is loaded), and leaves a clear record. Use physical dice for casual, fun play with trusted friends. Use an online roller for serious games, remote campaigns, or when you want everyone to feel confident the result is legitimate.

Which dice should I roll for a specific game action? That depends entirely on your game system. In D&D 5e: attack rolls use d20, weapon damage uses d4/d6/d8/d10/d12 depending on your weapon, skill checks use d20. In Pathfinder, similar rules apply. In board games, the rulebook explicitly tells you. When you're unsure, check the rules or ask the dungeon master.

Can I roll secretly so my result is hidden from other players? Technically yes, but that undermines fair play. If you roll privately and announce "I got a 15," no one knows if you actually did. In serious games, rolling openly is much better for trust. That said, some solo RPGs or narrative games do involve hidden rolls as part of the rules.

Ready to Roll?

Start with a simple test: roll 2d20 now. Notice how the results vary. You'll get different numbers each time, from 2 to 40, with no discernible pattern. That's fair randomness in action.

For D&D, Pathfinder, and other tabletop RPGs, our dice roller integrates seamlessly into remote campaigns — no downloads, no setup, just click and roll. For board gamers, it's a fast way to manage initiative or random events without losing components.

If you're also managing campaign logistics, SimpleCalc has other tools that help: our percentage change calculator is great for tracking XP gains or character progression, our date countdown timer helps you plan the next game night, and our timezone converter manages remote play across different time zones. For converting odd measurements in your game world, our unit converter handles any conversion instantly. And if you're budgeting for new gaming books or miniatures, our savings goal calculator can help track progress toward your hobby purchases.

Roll fair, play hard, and may your critical hits always land when you need them most.