You can calculate your odds of winning a giveaway simply by diving your entries with total entries. If you have completed all entries, for smaller item it usually comes between 1/50 to 1/500, for costly electronic items like laptop or iphone it can be 1/2000 or worser.Click to see full answer. Regarding this, how can I increase my chances of winning a giveaway? 8 Ways to Increase Your Chances of Winning Sweepstakes Do your research. Go mobile. Enter as many sweepstakes as you can—and enter often. Work the odds. Play by the rules. Know your newsletters. Watch out for scams. Track your winnings. Subsequently, question is, how likely are you to win a sweepstakes? Some sweepstakes have an astonishingly low number of entries. When you have a 1 in 50 chance of winning as opposed to a 1 in 50,000, your odds are obviously much better. Keeping this in consideration, what are the chances of winning Amazon giveaway? The odds vary completely and can range from a 1:1 chance where everyone wins, to a 1:9,999 chance where very few (if anyone) will win. There is also another type of Amazon Giveaway where the winners are all picked at the end of it.How are giveaway winners chosen?The Giveaway’s Winning Entry Chosen Is Chosen by a Random Number. This is the most common way to pick giveaway winners. Each entry into the giveaway is assigned a number in the order in which it is received. On the drawing date, a number from 1 to the last entry number is chosen by random.