How to read betting odds

What are betting odds?

Odds express the amount the bookmaker pays if a selection wins, as a multiple of the stake. Turkey and most of Europe use decimal odds: 1.50, 2.10, 4.00. Odds are always above 1.00; odds of 1.00 pay no profit.

How returns are calculated

For a single selection:

• Gross return = stake × odds
• Net profit = gross return − stake
• Implied probability = 100 ÷ odds (as a percentage)

Example: 100 ₺ at 2.50. Gross return 250 ₺, net profit 150 ₺, implied probability 40%. The odds calculator does these sums.

Gross return versus net profit

The "winnings" a betting site shows is usually the gross return, stake included. What lands in your pocket is the net profit. 100 ₺ at 1.20 returns 120 ₺ but earns only 20 ₺.

Implied probability and margin

Add up the implied probabilities of every selection in a market and you get more than 100%. The excess is the bookmaker's margin (overround). In a 1X2 market priced 2.10 / 3.40 / 3.60 the implied probabilities are 47.6% + 29.4% + 27.8% = 104.8%, a margin of about 4.8%. Implied probability is therefore not true probability; it is the bookmaker's price, margin included.

What do high odds mean?

High odds mean the bookmaker sees that outcome as less likely. Odds of 10.00 imply 10%. A high payout does not mean a high expected return; payout and probability balance each other, and the margin favours the bookmaker on both sides. A "high odds slip" is not a good slip by itself.

Accumulator odds

On an accumulator the selection odds are multiplied: 1.85 × 2.10 × 1.60 = 6.216. The product assumes the selections are independent. Correlated selections from the same match (such as "home win" and "over 2.5") are not independent; bookmakers either reject such slips or price them specially. Postponed matches, voided selections and rules such as acca insurance also change the product.

How to compare odds

Whether odds are "high" only means something against another bookmaker's identical offer. A sound comparison requires:

• The same event and the same start time.
• The same market and the same selection ("over 2.5" in both, not "over 2").
• Equivalent settlement rules (does extra time count, what is the refund rule).
• Each bookmaker's name, the odds and the time the odds were taken.
• The data source stated and stale data flagged.

This site has no live odds comparison table. We do not publish one without a permitted, reliable data source, matching market definitions and timestamps.

How to judge the best odds

Compare bookmakers' margins on the same market: the one with the lower margin returns more to players on average. A single high price may be balanced by low prices elsewhere in the market. Bonuses, limits and payout reliability are part of the judgement too; odds alone are not enough.

Terms

For 1X2, double chance, over/under, handicap and cash out see the betting terms glossary.