The Lab — Betting Tools & Calculators
Free tools to sharpen your edge, size your bets, and strip bookmaker margins. Built for Australian punters.
Kelly Criterion
Calculate optimal stake sizing based on your edge and bankroll.
Odds Converter
Convert between Decimal, Fractional, and American odds instantly.
Vig Remover
Strip the bookmaker margin to see the true odds and probabilities.
Bet Returns
Calculate total return and profit on any single bet.
Parlay Calculator
Combine multiple legs and see combined odds, returns, and probability.
Significance Test
Test whether your betting record is skill or luck.
Free Download
PuntLab Betting Tracker
Track every bet with automatic P&L, ROI, and win rate calculations. Pre-built sheets for Football, Racing, NBA, and a Summary dashboard. Works in Excel and Google Sheets.