Free tools
Betting tools
Convert odds, price a parlay and size your bets. Free to use, no signup.
Odds converter
- American
- -110
- Decimal
- 1.91
- Fractional
- 91/100
- Implied probability
- 52.4%
Parlay calculator
Leg 1
Leg 2
Leg 3
- Valid legs
- 3 of 3
- Combined odds (American)
- +720
- Combined odds (decimal)
- 8.20
- Implied chance of all legs hitting
- 12.2%
- Total return
- $82.00
Use American odds like -110 or +150.
Bankroll & unit size
A unit is a fixed slice of your bankroll. Many bettors keep it around 1% to 2%, so a losing streak can't wipe them out.
- 1 unit
- $5.00
- 2 units
- $10.00
- 5 units
- $25.00
- Losing streak of 10 at 1 unit
- -$50.00 (10% of bankroll)
Only bet money you can afford to lose.