Random Number Gen

Key features

• Random integers in any min–max range, one to twenty numbers per draw.
• Unique-only mode that forbids repeats within a single draw — ideal for lottery-style picks.
• All randomness comes from crypto.getRandomValues with rejection sampling, so results are uniform with no modulo bias.
• Dice tab rolls one or two six-sided dice with an animated shake and an instant total.
• Coin flip tab tracks heads vs tails across the session with a live percentage bar.
• Number draws keep the last five results in an in-page history.

How it works

1. 1

   Draw numbers

   In the Numbers tab, set min and max, choose how many (1–20), optionally enable Unique only, and hit Generate. Results pop in as animated chips.

2. 2

   Roll dice

   Switch to the Dice tab, pick one or two dice, and Roll — the pips animate and the total is shown below.

3. 3

   Flip a coin

   In the Coin Flip tab, press Flip coin. The tally bar records every result so you can sanity-check the fairness yourself.

Tips for better results

• 💡Unique draws need a big enough range: you can't pull 20 unique numbers from 1–10 — the tool warns you instead of looping forever.
• 💡Lottery numbers: min 1, max 49, count 6, Unique on.
• 💡The coin tally resets when you reload — it's a session view, not a permanent record.
• 💡Need d20s, d100s or modifiers for tabletop games? The dedicated Dice Roller tool handles those.
• 💡Results are generated fresh on every click — there's no seed to reproduce a previous draw.

Frequently asked questions