📈 Kelly Calculator

Compute optimal bankroll fraction with Kelly Criterion. Get quick bets for 1×, ½×, ¼× Kelly and expected growth.
↔️ Position Sizer ← Dashboard

⚙️ Inputs

Your trading capital used for sizing.
Probability your trade wins.
Average win / average loss. Example: 1.8 means wins are 1.8× losses.
🧮 Advanced
Risk controls: hard cap even if Kelly suggests more.
Comma-separated multipliers of Kelly (e.g., 1 = full Kelly).
We adjust effective edge slightly.

Formula: f* = (b·p − q) / b, where p = win rate, q = 1−p, b = payoff ratio.

📋 Results

--Kelly Fraction
--Bet Size ($)
--Expected log‑growth
--Breakeven Win %
Plan Fraction of Kelly Risk (% bankroll) Bet Size ($) Exp. log‑growth (per bet)
Enter inputs and hit Calculate. Tip: Many pros use ½‑Kelly to reduce drawdowns.