A clean, fast browser tool for converting betting odds and calculating parlays — redesigned to match OddsConv.com. Convert across seven odds formats instantly, calculate bet payouts, build parlays with system bets, and pin the whole thing to any webpage. **Odds Converter** Enter odds in any format and every other format fills in automatically — American, Decimal, Fractional, Hong Kong, Indonesian, Malay, and Prediction-market (cents). A visual implied-probability bar shows the corresponding percentage and a plain-English "1-in-N" chance. A decimal-places control lets you show decimal odds to as many digits as you need (up to 10). **Bet Calculator** Enter a bet amount to see your potential winnings (To Win) and Total Payout based on the converted odds. Quick-add chips make setting a stake one tap. **Parlay Calculator** Build parlays with multiple selections. Enter each leg's odds in any format — the rest auto-fill. Mark each leg Win, Push, or Lose to settle the bet. See combined parlay odds in American, Decimal, and Fractional, plus To Win, Total Payout, and Settled Return. With 3+ legs, System Bets unlock: every fold combination (Singles → full accumulator) and named systems (Trixie, Yankee, Lucky 15, Heinz, and more) with per-combination breakdowns. **Features** - Seven odds formats: American, Decimal, Fractional, Hong Kong, Indonesian, Malay, Prediction - Adjustable decimal-odds precision (0–10 places) - Implied-probability bar with 1-in-N chance - Bet calculator for payout and winnings, with quick-add chips - Parlay calculator with Win/Push/Lose settlement and System Bets (folds + named systems) - Pin to any webpage as a floating, draggable panel that inherits the same look - Lightweight — no account required, runs entirely on your device, no data collection **How to use** Click the extension icon to open. Type odds in any format and the conversion is instant. Switch between Convert and Parlay with the tabs at the top. Pin the tool to any webpage for easy access while browsing. This tool is designed to help you understand odds and probabilities. It's for informational purposes only and shouldn't be considered betting advice.