Whether it’s a charity raffle, an office giveaway, or a crypto whitelist lottery, the math is the same. You are competing against a finite number of tickets for a fixed number of prizes.
This Raffle Odds Calculator determines your exact probability of walking away with at least one prize based on your ticket volume.
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How to Calculate Raffle Odds
In a standard raffle, every ticket you buy increases your coverage of the pool.
- Total Tickets Sold: The pool size. (e.g., 5,000).
- Your Tickets: How many entries you hold (e.g., 10).
- Total Prizes: How many winning spots are available.
Example: The “Power of Bulk”
Scenario: A charity raffle sells 1,000 tickets. There are 5 prizes.
- Buy 1 Ticket: Chance = 0.5%. (1 in 200).
- Buy 20 Tickets: Chance = ~9.6%. (1 in 10).
Unlike national lotteries where buying more tickets barely moves the needle, in small raffles, buying bulk tickets significantly impacts your win rate.
Frequently Asked Questions (FAQ)
Does this assume “replacement” of tickets?
This calculator assumes a standard raffle where a winning ticket is not returned to the drum (Drawing without replacement). This slightly increases your odds of winning subsequent prizes if you have multiple tickets.