🎲 Yes or No Generator
By ToolNimba Editorial Team · Updated 2026-06-19
Press Ask to decide.
Total answers this session: 0
Stuck on a small decision? This yes or no generator picks an answer for you at random. Type your question if you like, press Ask, and it returns a clear Yes or No, or Yes, No or Maybe if you switch on the third option. Each answer is drawn with your browser’s cryptographic random number source, so the result is fair and unpredictable. A running tally shows how the answers have fallen so far this session.
What is the Yes or No Generator?
A yes or no generator is the digital version of flipping a coin: a quick, impartial way to settle a choice when you genuinely do not mind which way it goes, or when you simply want to break a deadlock. Behind the friendly button is a single random draw between two outcomes (Yes and No), each with an equal 50 percent chance. Turn on the Maybe option and it becomes a three-way draw, where Yes, No and Maybe each carry a one-in-three chance.
What makes a generator like this trustworthy is the quality of its randomness. This tool uses crypto.getRandomValues, the browser built-in cryptographic random source, rather than the ordinary Math.random function. To avoid a subtle flaw called modulo bias, it uses rejection sampling: it discards the few random byte values that would skew the odds, so every outcome stays exactly as likely as it should be. Nothing is sent over the network and no result is predetermined, the pick happens the instant you press the button.
There is also a quieter reason these tools are popular. Psychologists have long noted that assigning a choice to chance can reveal what you actually want: the moment the answer lands, you often notice relief or disappointment, and that gut reaction tells you more than the flip itself. Use it for the genuinely trivial calls, and treat it as a nudge rather than a verdict for anything that matters.
When to use it
- Settling a trivial everyday choice, such as which film to watch or whether to order takeaway.
- Breaking a tie when a group cannot agree and nobody minds which way it goes.
- Adding a fair, neutral coin-flip moment to a game, quiz, or classroom activity.
- Surfacing your own gut feeling by noticing how you react to the answer the generator gives.
How to use the Yes or No Generator
- Type your question in the box if you want it shown with the answer (this step is optional).
- Choose whether the answers are Yes or No, or Yes, No or Maybe.
- Press Ask to get a random answer drawn with the cryptographic random source.
- Read the large Yes, No or Maybe result, and watch the running tally update.
- Press Reset tally any time to clear the counts and start a fresh session.
Formula & method
Worked examples
You ask a plain Yes or No question.
- The tool needs one of 2 equally likely outcomes (Yes = 0, No = 1).
- It reads a random byte (0 to 255) and keeps only values 0 to 255 that fall in a complete block, then takes the value modulo 2.
- An even result maps to Yes, an odd result maps to No.
Result: Yes and No each have a 50% chance: P(Yes) = 1 ÷ 2 = 0.50.
You switch on the Maybe option for a three-way decision.
- The tool now needs one of 3 equally likely outcomes (Yes = 0, No = 1, Maybe = 2).
- It reads a random byte and rejects only the value 255, leaving 255 kept values (0 to 254), which is an exact multiple of 3.
- It takes the kept value modulo 3 to choose Yes, No or Maybe.
Result: Each answer has a one-in-three chance: P = 1 ÷ 3 ≈ 33.3%.
Probability of each answer by mode
| Mode | Outcomes | Chance of each | As a percent |
|---|---|---|---|
| Yes or No | 2 | 1 in 2 | 50% |
| Yes, No or Maybe | 3 | 1 in 3 | 33.3% |
Odds of getting the same answer several times in a row (Yes or No mode)
| In a row | Probability | Roughly |
|---|---|---|
| 2 times | 1 in 4 | 25% |
| 3 times | 1 in 8 | 12.5% |
| 4 times | 1 in 16 | 6.25% |
| 5 times | 1 in 32 | 3.13% |
Common mistakes to avoid
- Treating a random answer as real advice. A generator is impartial, not wise. For anything that affects your money, health, or relationships, use it at most as a tie-breaker and follow up with real thought or expert guidance.
- Expecting streaks to even out quickly. Getting Yes three times running does not make No "due" next. Each press is independent, so the odds reset to 50/50 every single time in two-answer mode.
- Re-rolling until you like the answer. Pressing Ask again and again until you get the result you wanted defeats the point. If you find yourself doing that, you already know your preference, so just go with it.
- Assuming Maybe is rare. In the three-answer mode, Maybe is exactly as likely as Yes or No, about one time in three. It is not a tie-breaker reserved for close calls.
Glossary
- Random
- An outcome that cannot be predicted in advance, where each allowed result has a known, fixed chance of occurring.
- Cryptographic RNG
- A high-quality random number source (here crypto.getRandomValues) designed to be unpredictable and free of obvious patterns.
- Modulo bias
- A subtle skew that appears when raw random numbers are squeezed into a smaller range with a remainder operation, making some outcomes slightly more likely.
- Rejection sampling
- A technique that throws away the random values which would cause modulo bias, keeping the remaining outcomes perfectly even.
- Independent event
- A result whose odds do not depend on previous results, so each press of Ask starts fresh.
Frequently asked questions
How does the yes or no generator decide the answer?
It makes a single random draw between the possible answers using your browser’s cryptographic random source, crypto.getRandomValues. In Yes or No mode each answer has a 50 percent chance; with Maybe added, each of the three has about a one-in-three chance. The pick happens the moment you press Ask.
Is the result truly random and fair?
Yes. It uses a cryptographic random number generator rather than ordinary pseudo-randomness, and applies rejection sampling to remove modulo bias. That means Yes and No really are equally likely, and the outcome is not decided in advance.
Can I add a Maybe option?
Yes. Switch the answer set to "Yes, No or Maybe" and the generator draws between three outcomes instead of two. Each of the three then has roughly a 33.3 percent chance, and a Maybe tally appears alongside Yes and No.
Does it remember my question or send anything online?
No. Everything runs in your browser, nothing is sent over the network, and the optional question is only shown on screen next to the answer. Refreshing the page clears the question and the tally.
What does the tally show?
It counts how many times each answer has come up during the current session and shows the share as a percentage. Over many presses the percentages should drift toward the expected odds. Press Reset tally to start the counts again from zero.
Should I use it for important decisions?
It is best for trivial or tied choices. For serious matters, treat it as a nudge: notice how you feel about the answer it gives, since that reaction often reveals what you really want, then make the call yourself or seek proper advice.