Bet Calculator

Five powerful tools to calculate returns, build multis, find value bets, and manage your bankroll like a pro.

💰
Bet Returns
🔗
Multi Builder
📊
Value Finder
🎯
Kelly Criterion
📐
Implied Prob

Bet Returns Calculator

Enter your stake and odds to instantly see potential returns and profit. Supports win, each-way and place-only bets.

Results

Potential Return $250.00
Potential Profit $150.00

Multi / Parlay Builder

Build a multi bet with 2 to 15 legs. Combined odds and potential returns update as you add selections.

Multi Results

Legs 2
Combined Odds —
Potential Return —
Potential Profit —

Value Bet Finder

Compare your estimated probability with the bookmaker's odds to find value. A positive expected value means the odds are in your favour long-term.

Value Analysis

Expected Value (EV)
+10.00%
✓ Value Bet
True Odds (from your probability) 1.82
Edge +10.00%
−50% 0% +50%
What this means: At your estimated 55% probability, the true odds should be 1.82. The bookmaker is offering 2.00, which is higher — meaning you have a 10.00% edge. This is a value bet.

Kelly Criterion Calculator

The Kelly Criterion tells you the optimal fraction of your bankroll to wager, based on your perceived edge. Half-Kelly is recommended for most punters to reduce variance.

Kelly Recommendation

Full Kelly Fraction 10.00%
Full Kelly Stake $100.00
Half Kelly Stake (Recommended) $50.00
⚠️ Caution: Kelly suggests staking more than 10% of your bankroll. This carries high risk. Consider using Half Kelly or a fractional Kelly approach to protect your bankroll from large drawdowns.
Full Kelly vs Half Kelly: Full Kelly maximises long-term growth rate but comes with large swings. Half Kelly sacrifices ~25% of the growth rate for ~50% less variance — a much smoother ride. Most professional punters use half or quarter Kelly to manage risk.

Implied Probability Calculator

Convert decimal odds to their implied probability. Toggle dual-team mode to calculate the bookmaker's overround (margin).

Dual-team mode (calculate overround)
40.0% Implied

Result

Decimal Odds 2.50
Implied Probability 40.00%