Magic 8 ball

Ask a question, give the ball a shake and get one of the 20 classic answers.

Your question (optional)

The ball says

–

How the ball chooses its answer

Every shake asks your browser's cryptographic random number generator (crypto.getRandomValues, the same machinery used to create encryption keys) to pick one of the 20 classic answers, so each answer has exactly the same chance every time. The answer is decided before the wobble animation even starts: the shake is pure theatre, and neither your timing, your question nor the previous answer can nudge the result. If your device is set to reduce motion, the animation is skipped and the answer appears straight away.

Your question stays on your device. It is never read, stored or uploaded, and it exists only so the note under the ball can remind you what you asked. You can leave the box empty and simply shake.

chance of any single answer = 1 ÷ 20 = 5%

The odds behind the twenty answers

The classic answer list is deliberately lopsided: 10 answers are positive, 5 are vague and 5 are negative. That split gives the toy its famously sunny disposition, because half of all shakes come up positive and only a quarter say no.

What is the chance of a positive answer?

10 of the 20 answers are positive, so 10 ÷ 20 = 50%. A negative answer is 5 ÷ 20 = 25%, and a vague answer is also 25%. The ball says yes twice as often as it says no.

How likely are two negative answers in a row?

Each shake has a 5 ÷ 20 = 1 in 4 chance of a negative answer, so two in a row is (1 ÷ 4)² = 1 in 16, which is 6.25%. If the ball turns you down twice, it is being genuinely unlucky, not stubborn.

What is the chance of four straight answers with no vagueness?

The chance of a clear answer (positive or negative) is 15 ÷ 20 = 75% per shake. Four in a row is 0.75⁴ ≈ 31.6%, so most runs of four questions include at least one "ask again later".

A short history of the magic 8 ball

The toy's story starts in 1940s Cincinnati. As it is usually told, Albert C. Carter was inspired by a fortune-telling device used by his mother Mary, a professional clairvoyant, and turned the idea into a tube-shaped novelty called the Syco-Seer. Abe Bookman of the Alabe Crafts company refined the design, and around 1950 it took on its now famous form, an oversized billiards eight ball, reportedly after a billiards company ordered a version as a promotional item. Inside the real toy, a 20-sided die floats in dark blue liquid, and one face drifts up against a window when you turn the ball over.

The answer list has stayed remarkably stable ever since: 10 positive, 5 vague, 5 negative, the same set used on this page. The toy passed through several owners over the decades and is made today by Mattel, with tens of millions sold. Not bad for a gadget whose only feature is 20 sentences and a slow float to the surface.

Good questions to ask it

Trivial deadlocks: pizza or curry, park or sofa, one more episode or bed. If both options are fine, the ball's verdict is as good as ten minutes of dithering.
Party fortune telling: pass the phone round the table and let everyone ask one question out loud. The vague answers get the biggest laughs.
A gut check: ask a question you actually care about and notice your reaction when the answer lands. Relief or disappointment tells you what you really wanted, and you are always free to overrule the ball.
Icebreakers: ask it about the office sweepstake, the weekend weather or whether the meeting will finish on time, then enjoy how confidently it commits.

For a straight 50/50 without the theatrics, try our yes or no button, or flip the coin. And remember the ball's own advice applies to the ball itself: for anything that matters, concentrate and ask yourself again.

Frequently asked questions

What are the 20 classic answers?

The traditional set has 10 positive answers (It is certain, Signs point to yes and so on), 5 vague ones (Ask again later, Reply hazy, try again) and 5 negative ones (My reply is no, Very doubtful). This page uses that classic list unchanged, so half of all shakes come up positive.

Is every answer equally likely?

Yes. Each shake uses your browser's cryptographic random number generator to pick one of the 20 answers, so every answer has exactly a 1 in 20 chance. The wobble animation is just for show and has no effect on the result.

Why do I keep getting vague answers?

Five of the twenty answers are non-committal, so on average one shake in four tells you to ask again. Two vague answers in a row has a 1 in 16 chance, which is common enough to notice. Every shake is independent, so just shake again.

Does my question affect the answer?

No. The question box is there to help you focus and to remind you what you asked. The text is never read, stored or uploaded, and the answer is chosen by pure chance regardless of what you type, or whether you type anything at all.

Is this the official Magic 8 Ball toy?

No. Magic 8 Ball is a trademark of Mattel, and the physical toy uses a floating 20-sided die in blue liquid. This page is a free homage that reproduces the same 20 answers with fair randomness in your browser.