What's the bonus
really worth?
Bonus coins come with a playthrough, and free picks keep only the winnings. Enter the terms to see the average value after the catches.
Enter odds as American (-110, +150), decimal (1.91) or fractional (10/11). Everything is worked out in your browser. Nothing is saved or sent.
How it works
- 100 bonus coins1x playthrough
- Play 100 coinsAt -110, about 4.5% is lost on average
- Worth about 95On average
- Can still go to 0
Bonus: value = bonus − amount played × the site's edge (worked out from both sides, like the no-vig calculator). Free pick: value = amount × (decimal odds − 1) × fair chance.
Averages only. Real terms add expiry dates, minimum odds, excluded picks and caps. Read them first.
Where it applies
Social sportsbooks like Fliff give bonus prize coins with a playthrough, usually 1x. See the current offers on our sportsbooks page.
Questions
Why is a bonus worth less than its face value?
Bonus coins have to be played through before they can be redeemed, and every pick carries the site’s cut. At -110 on both sides, each $1 played costs about 4.5 cents on average, so 1x playthrough on 100 bonus coins costs about 4.5 of them.
What is a free pick worth?
With a free pick (often called a free bet) you keep only the winnings, not the stake. A 10-coin free pick at -110 with a fair 50% chance is worth about 10 × 0.909 × 0.5 = 4.5 coins on average. Longer odds keep more of the value.
Is a 100% first-purchase match a good deal?
It doubles what you buy, but only the bonus part needs the playthrough, and only if the rest of the terms (time limits, minimum odds, which picks count) are fair. Buying is always optional. Never buy coins to chase a prize.
Does this work for sweepstakes casinos too?
Yes, if you use the game’s house edge instead of odds. Pick "House edge" and enter it, e.g. 3% for a slot with 97% RTP.
More tools
Sweepstakes sportsbooks and prediction markets →
These calculators do math, not predictions. No price is a sure thing: sites can change lines, cancel picks made at a wrong price, limit accounts, or close markets before you place the other side. Never stake money you need, and never treat picks or trading as a way to make money. 21+. Gambling problem? Call or text 1-800-GAMBLER. Play responsibly.