Sports
Betting Odds Explained: Decimal Odds and Implied Probability
Quick Summary
- Decimal odds show your total return per ৳1 staked, including the stake.
- Dividing 1 by the odds gives the implied chance the price suggests.
- Add the implied chances in a market and the excess over 100% is the margin.
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- Checked 5 Nov 2026
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Every bet starts with a price, and every price is a probability in disguise. Once you can switch between odds and percentages, a lot of betting becomes clearer: you can see what a price is asking you to believe, compare markets and spot how much margin is built in. This guide uses decimal odds, the format most sportsbooks in South Asia display, and works through each idea with small hypothetical Taka examples.
What decimal odds mean
Decimal odds tell you the total return for each ৳1 staked, including the ৳1 itself. Odds of 2.50 mean a ৳100 bet returns ৳250 if it wins: your ৳100 back plus ৳150 profit. Odds of 1.20 return ৳120, a profit of only ৳20. The formula is simple: return equals stake times odds; profit equals stake times (odds minus 1).
| Decimal odds | Return on ৳100 | Profit | Implied chance |
|---|---|---|---|
| 1.20 | ৳120 | ৳20 | 83.3% |
| 1.50 | ৳150 | ৳50 | 66.7% |
| 2.00 | ৳200 | ৳100 | 50.0% |
| 3.00 | ৳300 | ৳200 | 33.3% |
| 5.00 | ৳500 | ৳400 | 20.0% |
| 10.00 | ৳1,000 | ৳900 | 10.0% |
Implied probability
To find the chance a price implies, divide 1 by the odds. Odds of 4.00 imply 25%; odds of 1.80 imply 55.6%. This is the break-even rate: if you back selections at 4.00, they need to win at least one time in four for you to come out level over many bets.
The useful question is whether you believe the real chance is higher or lower than the implied one. If you think a team wins 30% of the time and it is priced at 4.00 (25%), the price looks generous to you. If you think it wins 20% of the time, the price is short. Your estimate may be wrong, of course, which is why staking small and recording results matters. Our betting ROI post shows how to check your estimates over time.
Finding the margin
Add up the implied chances of every outcome in a market. In a fair market they would total 100%. Real markets total more, and the excess is the bookmaker's margin. A hypothetical tennis match at 1.80 and 2.05 implies 55.6% + 48.8% = 104.4%, a margin of 4.4%. A three-way football market at 2.40, 3.30 and 3.10 implies 41.7% + 30.3% + 32.3% = 104.3%.
Margins tend to be lower on popular main markets and higher on niche or multi-leg markets. Accumulators multiply margins together: four legs at 5% margin each push the combined margin above 20%. That is why one large accumulator usually costs more than four singles of the same total stake.
Other odds formats
Fractional odds such as 5/2 show profit relative to stake; add 1 to convert to decimal (5/2 = 2.5 + 1 = 3.50). American odds use a plus or minus: +150 means a ৳100 bet wins ৳150 profit (decimal 2.50), and -200 means you must stake ৳200 to win ৳100 (decimal 1.50). Some Asian handicap markets show "Hong Kong" odds, which are decimal odds minus 1. If PJOK lets you switch formats, the setting is usually in the sportsbook menu.
Using odds on PJOK
PJOK's bet slip shows the potential return before you confirm, which is a handy check on the arithmetic above. We could not confirm which odds formats or markets the PJOK sportsbook offers, so open it to see. For cricket-specific prices read cricket odds, and for staking ideas see the Kelly criterion explainer. The sports betting hub has the rest.
Three steps
How to read any price in 3 steps
- 1Convert to a percentage
Divide 1 by the decimal odds to get the implied chance of the outcome.
- 2Add up the market
Sum the implied chances of every outcome; the excess over 100% is the margin you pay.
- 3Compare with your view
Bet only if your own estimate is clearly above the implied chance, and keep the stake to one unit.