Odds Calculator

Convert between formats, calculate EV, and find optimal bet size.

Probability & Odds Converter

Contract Price ($)

Probability (%)

Decimal Odds

Payout if correct: $0.65 per contract

Market Price (contract cost $)

Your estimated probability (%)

Expected Value per contract: +$0.15

Return on investment: +42.9%

Bankroll ($)

Contract price ($)

Your probability (%)

$230

Full Kelly

$115

Half Kelly (safer)

$58

Quarter Kelly

These tools are for educational purposes. Not financial advice. Always do your own research.