Dice roller
Roll d4 through d20 or a custom die, one or many, with crypto.getRandomValues.
Runs in this tab. The file stays here.
Ready
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This runs in your browser. Nothing is uploaded.
About Dice roller
Roll crypto-grade dice in your browser: configurable count and sides from d4 to d20 or custom.
This dice roller stays in the tab. Nothing is uploaded to ihateonlinetools.com for the calculation. That is the same offline promise as the rest of the site: your numbers, caption, or recipe never need to sit in a third-party form log.
Each face is chosen with crypto.getRandomValues rejection sampling so every face of a fair die is equally likely. You set how many dice to roll and whether you want a classic polyhedral size or a custom side count. The main pane shows each face and a sum when you roll more than one.
This is for tabletop games and classroom demos, not online gambling. There is no account, no seed you can share to reproduce a roll, and no server log of what you rolled. Related tools on this site cover nearby jobs without forcing a signup wall.
How to use Dice roller
- 1Open /random/dice-roller/ and check the side-panel defaults.
- 2Enter your values or paste your list; the main pane updates.
- 3Copy the result if you need it elsewhere. Closing the tab clears local state unless noted.
What it won't do
- Not professional advice and not a hosted account product.
- Garbage in, garbage out: wrong inputs yield wrong outputs.
Common questions
Does dice roller upload anything?
No. Inputs and outputs stay in the browser process. Sharing features that exist, such as countdown links, only put values you choose into the URL on your device.
What formula or method does dice roller use?
Each face is chosen with crypto.getRandomValues rejection sampling so every face of a fair die is equally likely. You set how many dice to roll and whether you want a classic polyhedral size or a custom side count. The main pane shows each face and a sum when you roll more than o…
When should I not rely on dice roller alone?
When a clinician, building code, platform policy, or teacher requires a signed process. This page is a calculator and explainer, not a certificate.
Is dice roller free and offline-capable?
Yes. After the static page loads, the logic runs without calling an external compute API. Return visits may use the service worker cache for the shell.
Related tools
Why this one doesn't upload your file
There is no server to upload to. This page is a static file, and the work happens in your browser using the same graphics and WebAssembly code that renders every other site you visit. Your file is read from disk into memory, processed, and handed back as a download. Once the page has loaded you can disconnect from the network entirely and it keeps working. The longer explanation