Classic tool
Online Dice Roller
Roll d4, d6, d8, d10, d12, d20 or formulas like 2d6+3 right in your browser.
Use this online dice roller for RPG sessions, board games, classroom activities or any quick random choice. The tool supports classic dice such as d4, d6, d8, d10, d12 and d20, plus standard notation like 2d6 or 3d8+2.
Enter the notation, tap a preset die and roll as many times as you need. The result shows the total, each individual die value and a short recent history so you can keep track during encounters, campaigns or casual games.
Rolls happen in the browser with crypto.getRandomValues(), without sending the throw to a server. That keeps the tool fast on desktop and mobile while avoiding extra steps.
Use clear inputs to get a more useful result.
How to use Online Dice Roller
Open the tool, fill in the fields with the data you already have and generate the result step by step. If you want to compare scenarios, change one field at a time so it is easier to understand the impact of each value.
When Online Dice Roller is useful
The goal here is simple: Roll d4, d6, d8, d10, d12, d20 or formulas like 2d6+3 right in your browser. It works well for quick checks, planning, study and review before you move to a final decision or document.
What to review before using the result
Check units, labels, numbers, timing and any context that can change the meaning of the output. If the result will be used in a quote, technical task, published page or report, finish with a manual review.
Frequently asked questions
What should I prepare before using the tool?
Keep the key values, labels and units ready before filling in the fields. Cleaner inputs make the final result easier to review and compare.
Can I test different scenarios on the same page?
Yes. The safest approach is to change one field at a time, compare the outputs and note which value actually changes the final answer.
Is the result ready to use without checking it?
It is better to treat it as support. Review the output once more before using it in a quote, document, spreadsheet, technical task or published page.