What Is a Double Bet? Meaning, Cost and Worked Examples

What is a double bet? In short, it is a single wager that combines two selections from different events, and both selections must win for the bet to pay out. It is the simplest multiple bet in sports betting, and it is also the most widely placed one.

Last updated: November 2026

Quick Answer

• A double combines two selections into one bet, and both must win.
• Firstly, the odds multiply: a double at 2.00 and 3.00 pays at combined odds of 6.00.
• Secondly, one stake covers the whole bet: a ₦1,000 double costs exactly ₦1,000.
• Thirdly, if either leg loses, the whole bet loses and the return is zero.
• Finally, if one leg is void, most bookmakers settle the bet as a single on the other leg.

What Is a Double Bet? The Simple Definition

A double links two independent selections into one consolidated wager. For example, you can pick two football matches, two horse races, or one of each, from the same sport or from completely different sports. In other words, the only rule is that the two selections must be unrelated.

In short, what is a double bet in one line? One stake, two selections, both must win. Then, the return from the first winning selection rolls automatically onto the second, which is why the odds multiply instead of adding up. For example, if your first selection wins, you never see the winnings in between: they become the stake on the second selection at once.

In contrast, a double is not the same as Double Chance, which is a different market entirely. Double Chance covers two of the three outcomes in a single match, such as a home win or a draw, while a double combines two separate selections from two separate events.

What Is a Double Bet Worth? How the Odds Multiply

In practice, doubles are easiest to work out in decimal odds. Firstly, multiply the two sets of odds together to find the combined odds. Secondly, multiply the combined odds by your stake to find the total return. In effect, the formula is:

Combined odds = Odds 1 x Odds 2
Total return = Stake x Combined odds

Above all, the total return includes your original stake, so your profit is the return minus the stake. For instance, a double at combined odds of 6.00 returns six times your stake when both legs win.

The appeal of a double lies in this compounding. Rather than placing two single bets, a double rolls the full return from the first leg onto the second. As a result, the potential payout from one unit stake is far higher than backing the same two selections as singles.

On the other hand, the risk rises just as sharply. A double needs two results to go your way instead of one, so it loses more often than a single at the same odds. Therefore, treat the bigger payout as payment for the bigger risk, not as free money.

What Is a Double Bet Worth? Two Worked Examples

Firstly, worked example A uses football. Suppose you place a ₦1,000 double on Arsenal to win at 2.00 and Manchester City to win at 3.00 (ILLUSTRATIVE). The combined odds are 2.00 x 3.00 = 6.00. If both teams win, your total return is ₦1,000 x 6.00 = ₦6,000, a profit of ₦5,000. If either team fails to win, the whole bet loses.

Secondly, worked example B uses different odds. Suppose you place a ₦2,000 double on two selections priced at 1.80 and 2.50 (ILLUSTRATIVE). The combined odds are 1.80 x 2.50 = 4.50. If both selections win, your total return is ₦2,000 x 4.50 = ₦9,000, a profit of ₦7,000. In short, the maths is the same every time: multiply the odds, then multiply by the stake.

The table below shows the same two examples side by side.

Example	Odds	Combined odds	Stake	Total return
A	2.00 x 3.00	6.00	₦1,000	₦6,000
B	1.80 x 2.50	4.50	₦2,000	₦9,000

What Is a Double Bet Compared With Singles and Trebles

A single bet is one selection on its own: the return is your stake multiplied by the odds. A double adds a second leg, so the odds multiply and the payout grows, but both legs must win. A treble adds a third leg, so the odds multiply again and the payout grows further, but all three legs must win. In other words, each extra leg raises both the reward and the risk.

For instance, compare the same two selections at 2.00 and 3.00. Two singles of ₦500 each return ₦1,000 and ₦1,500 if both win: ₦2,500 in total on ₦1,000 staked. A ₦1,000 double on the same selections returns ₦6,000 if both win. However, if one selection loses, the singles still pay on the winner, while the double pays nothing at all.

In addition, doubles also appear inside bigger system bets. For example, a Yankee contains 6 doubles among its 11 bets, while a Trixie contains 3 doubles and 1 treble. Our guide to the Yankee bet explains how those doubles work inside a system, and our guide to the Trixie bet covers the smallest system of all.

What Is a Double Bet When One Leg Is Void?

In practice, a leg can be void when an event does not take place, for example when a football match is postponed. In that case, most bookmakers settle the double as a single at the remaining selection’s odds. For instance, a ₦1,000 double at 2.00 x 3.00 with the 3.00 leg void settles as a single at 2.00 and returns ₦2,000 if it wins (ILLUSTRATIVE).

That said, settlement rules vary by operator, so check the terms of the bookmaker you use before you place the bet. Above all, do not assume a void leg means a refund: the bet usually continues as a single rather than being cancelled outright.

Common Mistakes With Doubles

Above all, the most common mistake is to pick two short-priced favourites and expect easy money. Two selections at 1.20 and 1.30 combine to only 1.56, a small return for the risk of needing two results. In contrast, a double works best when each leg carries genuine value on its own.

Another mistake is to combine related selections, such as a team to win and the same team’s star player to score in the same match. Bookmakers treat those as related contingencies and will not let you place them as a standard double: they belong in a BetBuilder instead.

A third mistake is to stake the same amount on a double as on a single. Because a double loses more often, a smaller stake is the sensible choice. Finally, never chase a losing double with a bigger one: the odds do not improve because you lost the last bet.

Frequently Asked Questions

What is a double bet worth if one leg wins and the other loses?

Nothing. Both selections must win for a double to pay out. If one leg wins and the other loses, the whole bet loses and you lose your stake. That all-or-nothing rule is what makes the payout higher than two singles.

How do you place a double bet?

Firstly, pick two selections from different events on your betting slip, then choose the double option instead of two singles. The slip shows the combined odds before you confirm, so check them against your own calculation first.

Can a double bet include selections from different sports?

In fact, the two legs can come from any sports or markets, as long as they are unrelated. For example, you can combine a football result with a horse racing winner, and the odds multiply in exactly the same way.

Is a double bet better than two singles?

In short, it depends on what you want. A double pays more than two singles when both selections win, because the returns compound. However, two singles pay something when only one selection wins, while a double pays nothing. In short, a double trades safety for a bigger payout.

What is the difference between a double and a treble?

In short, a double has two selections and a treble has three. Both need every leg to win, and both multiply the odds. A treble pays more than a double on the same per-leg odds, but it also fails more often, because it needs three results instead of two.

Can you cash out a double bet?

Most bookmakers offer cash out on doubles while both legs are still running, with the offer rising or falling as the matches progress. The offer reflects the chance of both legs winning at that moment, so it is usually lower than the full payout.

Conclusion

A double is the simplest way to turn two good selections into one bigger payout: multiply the odds, multiply by the stake, and collect if both legs win. Once you can work out the combined odds, you know what is a double bet and when it suits your bankroll. Use it when both selections carry value on their own, and keep the stake modest.

In Nigeria, gambling regulation is state-led: the Supreme Court nullified the National Lottery Act 2005 on 22 November 2024, and the National Lottery Regulatory Commission framework applies only in the Federal Capital Territory. Never treat a double as a safe way to chase losses, and only stake what you can afford to lose.

Bet Responsibly: Betting is for adults aged 18 and over only. Treat it as entertainment, not a way to make money, and only stake what you can afford to lose. If betting stops being fun, take a break and read our Responsible Gambling page.