预测投注计算器 - 计算前两名回报
免费预测计算器用于赛马和赛狗。计算顺序和逆序预测回报。
如何使用此计算器
- 选择forecast类型 — 直接(特定的1-2顺序)或反向(任意顺序)
- 输入您选择第一名的马的赔率
- 输入您选择第二名的马的赔率
- 输入您的单位投注
- 查看总投注、组合赔率、回报和利润
公式
组合赔率 = 赔率₁ × 赔率₂
直接forecast: 1个投注,总投注 = 单位投注。
反向forecast: 2个投注(两种顺序),总投注 = 2 × 单位投注。只有正确的顺序获胜;支付 = 单位投注 × 组合赔率。
常见问题
What is a forecast bet?
A forecast (also called exacta in the US) is a bet on which two horses will finish 1st and 2nd in a race. A straight forecast requires the exact order; a reverse forecast covers both orders for double the stake.
How is forecast different from each-way?
Each-way is two independent bets (one to win, one to place) on a single horse. A forecast is a single bet specifying the relationship between two horses’ finishing positions. Forecasts pay much more but have lower probability of winning.
Should I use straight or reverse forecast?
Use straight if you have a strong opinion on which horse wins. Use reverse if you think two horses will fill 1st and 2nd but you’re unsure of the order — you double your stake but cover both possibilities.
Are forecast odds the same as the multiplied book odds?
Most UK bookmakers use Computer Straight Forecast (CSF) dividends declared by Tote/SP, not pure multiplied odds. Multiplied odds are a useful approximation but actual payouts can differ by ±10-20% depending on the field strength formula used.