Question 1

What dice notation does this tool support?

Accepted Answer

Standard RPG dice notation: '3d6' (roll 3 six-sided dice), '3d6+2' (add modifier), '4d6kh3' (roll 4 keep highest 3 — drop the lowest), '2d20kl1' (disadvantage — keep lowest 1), 'd6!' (exploding dice — reroll on max, capped at 100 rerolls to prevent infinite loops), and multi-term expressions like '1d20+1d4+2'. You can also subtract terms with '-1d6'.

Question 2

Which dice types can I roll?

Accepted Answer

Standard polyhedral dice (d4, d6, d8, d10, d12, d20, d100) plus any custom face count (d2, d7, d30, d1000…). Quick-pick buttons for the common dice appear in the UI; for anything else, type the notation directly. Each die is uniformly random across its faces — fair by construction.

Question 3

How does the random picker work?

Accepted Answer

Paste a list of items (one per line). In unweighted mode, each item has equal probability. Toggle weighted mode and append ' :: weight' to each line (e.g. 'Pizza :: 3') — heavier weights get proportionally higher probability. The picker uses a cumulative-distribution algorithm so it's exactly fair across the requested weights.

Question 4

Can rolls be reproduced?

Accepted Answer

Yes — enter any 32-bit seed and the tool uses a mulberry32 PRNG. The same seed + same expression always produces the exact same rolls. Leave the seed field blank or click 'Random' for non-reproducible rolls. We never use Math.random() when a seed is set, so reproducibility is guaranteed.

Question 5

What extra features does this tool have versus others?

Accepted Answer

(1) Full RPG dice-notation parser with modifiers, keep-highest/lowest, and exploding dice. (2) Standard dice d4–d100 + custom faces. (3) Multi-term expressions (1d20+1d4+2). (4) Random list picker (weighted or unweighted). (5) Coin flip with streak tracking. (6) Seeded reproducibility (mulberry32). (7) Roll history (max 20) in localStorage. (8) Per-roll stats (sum, mean, min, max, distribution). (9) CSV/JSON/text export. (10) Shareable config URL (encoded in fragment). (11) Reduced-motion option. (12) Quick-pick dice buttons.

Dice Roller & Random Picker

How to use