Random Decision Tools
Use four compact browser-local randomizers for games and low-stakes choices, with the exact RNG method and limitations visible on the page.
Last reviewed: July 15, 2026
Choose a random tool
Flip coins, roll dice, generate a yes/no answer, or draw one value from 1–100.
Coin flip
Dice roller
Yes, no, or maybe
Number wheel
Draw one whole number from 1 through 100.
Current random result
Results are generated only after you choose an action.
Ready.
What each tool does
Coin flip
Maps random integer 0 to Heads and 1 to Tails. Multiple flips are independent and may repeat.
Dice roller
Draws each die independently from 1 through the selected number of sides, then reports the total.
Yes/no answer
Selects uniformly from Yes and No, or from Yes, No, and Maybe when that option is enabled.
Number wheel
Draws one integer from the inclusive range 1–100 without a visual-animation delay.
Randomness method
Each user action requests unsigned 32-bit values from crypto.getRandomValues() when the browser makes it available. Rejection sampling discards values outside the largest evenly divisible bucket for the requested range before mapping the accepted value. That avoids the remainder bias that would otherwise give some results a slightly different frequency.
If Web Crypto is missing or throws, the tools fall back to Math.random() and label that fallback beside the heading. The fallback is pseudorandom. Neither method is appropriate for passwords, cryptographic keys, regulated drawings, audits, or decisions involving material rights or value.
Worked examples
Rolling two six-sided dice performs two separate draws from 1–6. A possible result is 2, 5, with a total of 7. Selecting “Include Maybe” changes the answer pool from two equally selectable labels to three; it does not analyze the wording or consequences of a question.
Privacy and storage
The settings and generated results remain in the browser and are not intentionally saved to MyLuckyNumber history or sent to a MyLuckyNumber server. Copy result writes only the current visible result to the clipboard after the button is selected.
Appropriate use
- Use these tools for games, practice, and low-stakes choices where every listed outcome is acceptable.
- Do not delegate medical, legal, financial, employment, safety, or consent decisions to a random output.
- Randomness does not make a choice fair when the options, participants, or procedure are biased.