Probability Calculator

About This Tool

So, I built this Probability Calculator because I got tired of doing basic probability math in my head—or worse, on paper—only to second-guess my results five minutes later. It’s not fancy. It’s not trying to impress anyone. It just takes in a few numbers and spits out the likelihood of something happening. Simple as that. I use it when I’m playing board games with friends and want to know my odds of drawing the right card. Or when I’m trying to figure out if it’s worth betting on a sports game based on recent stats. Honestly, it’s just a helper. No magic, no hidden algorithms. Just math, clean and straightforward.

Key Features

• Calculates basic probability (favorable outcomes over total outcomes)
• Handles independent and dependent events
• Supports combinations and permutations for more complex scenarios
• Shows step-by-step breakdowns so you can follow along
• Works offline—no need to worry about internet drops mid-calculation
• Lightweight and fast; opens in seconds
• No ads, no tracking, no nonsense

FAQ

Can I use this for gambling?
Sure, you can. But don’t blame me if you lose your rent money. The calculator gives you the odds—it doesn’t guarantee wins. Use it to make informed guesses, not wild bets.

Why isn’t it on mobile?
It is. I just didn’t bother making a flashy app. It runs in your browser, so it works on your phone, tablet, or whatever device you’ve got lying around. No downloads, no updates, no hassle.