反向投注计算器 - 计算反向投注回报
免费反向投注计算器。计算2个选项的反向投注盈亏。查看所有可能结果。
如何使用此计算器
- 选择您的赔率格式
- 输入两个选择的赔率
- 输入您的单位投注(两个if-bets中的每一个都使用该金额)
- 查看四种可能结果中每一种的利润/损失
公式
反向投注是两个相反顺序的if-bets。每个if-bet仅在第一个获胜时才放置第二个投注。
两者都获胜: 2 × ((O₁ − 1) + (O₂ − 1)) × 投注
选择1获胜,2失败: (O₁ − 3) × 投注
选择2获胜,1失败: (O₂ − 3) × 投注
两者都失败: −2 × 投注
总暴露 = 2 × 单位投注。
常见问题
What is a reverse bet?
A reverse bet (also called an if-bet reverse) is two conditional bets placed in opposite orders. If your first selection wins, your unit stake rolls to the second selection — and the same logic applies in reverse. Total stake equals 2× unit stake.
A parlay requires both selections to win for any payout. A reverse pays even when only one wins (though at a loss because you risk the second leg). Reverses give partial protection at the cost of lower upside than parlays.
When should I use a reverse bet?
Reverses are useful when you have two confident picks but want to limit downside if one loses. They’re popular in US sports betting where parlay-like products are restricted. The math usually slightly favours straight singles unless one selection has very specific risk-management value.
What's the difference between an if-bet and a reverse?
An if-bet is one-directional: A → B (B only triggers if A wins). A reverse is two if-bets in opposite directions: A → B AND B → A. Reverse covers more outcomes but doubles the stake.