// The Tackle Box
Sharp Tools.
Easy to Use.
Everything in your tackle box. The calculators and Fantasy Hub are free — premium unlocks the full Props Dashboard, best odds, matchup context, player form, Cheat Sheets, and Pro Tools.
// Dashboard
Props Dashboard
Live props, game lines, matchup context, player form, Edge Scores, L10/L5 hit rates, batter-vs-pitcher data, and best odds across major books — all in one betting workspace.
Open Dashboard →
// Cheat Sheets
Cheat Sheets
Saved research boards for MLB and NFL — Hits, HR Targets, Total Bases, Strikeouts, Batter vs Pitcher, Game Lines, NFL TD Streaks, QB 2+ TD Streaks, and QB 200+ Yards.
Open Sheets →
// Game Factors
Game Factors
MLB park factors, NFL stadium context, weather sensitivity, and official-impact notes in one research board.
Open Factors →
// Fantasy
Fantasy Draft Room
Home League, Best Ball, Draft Planner, and roster watch tools for football draft prep and season-long tracking.
Open Draft Room →
Unit & Bankroll Strategy
Set a clean staking plan before the board opens. Choose your risk style, get your unit size, and keep a daily stop-loss in view.
Bankroll ($)
Risk Profile
Custom %
Bonus Bet Hedge Finder
Enter the bonus bet you want to place and the cash you are willing to risk on the other side. KingFish tells you the opposite-side price needed to lock the same profit either way.
Bonus Bet Amount ($)
Bonus Bet Odds
Cash Hedge Amount ($)
Optional Odds Found
Example: a $100 bonus bet at +100 wins $100. If you hedge $25 cash, you need about +300 on the opposite side to lock $75 either way.
Manual CLV Tool
Compare your bet price against the closing number. Beating close does not guarantee a win, but it is one of the cleanest signs that your process is finding value.
My Bet Odds
Closing Odds
EV Calculator
Expected Value — enter the book's odds and what you think the true odds should be. We'll tell you if there's an edge.
Book's Odds
Your True Odds
Stake ($)
Tip: If the line is -110 but you think it should be -105, enter -110 as book odds and -105 as your true odds.
ARB Calculator
Arbitrage — find guaranteed profit by betting both sides across different books.
Book 1 Odds
Book 2 Odds
Total Stake ($)
Parlay Calculator
Enter each leg's odds to see combined parlay odds and potential payout.
Leg 1 Odds
Leg 2 Odds
Stake ($)
Odds Converter
Convert between American, Decimal, and Fractional odds instantly.
Input FormatEnter Odds
Vig Calculator
See how much the book is charging you and the true fair odds on both sides.
Side 1 Odds
Side 2 Odds
No-Vig Calculator
Strip the juice and find the true fair odds on both sides of a market.
Side 1 Odds
Side 2 Odds
Bet Size Calculator
Enter your bankroll and how much you want to risk. We'll show you the exact bet size plus common flat betting benchmarks.
Bankroll ($)
Risk % of Bankroll
Hedge Calculator
One leg away on a parlay or future? Enter your original bet and the hedge odds to lock in profit or minimize loss.
Original Stake ($)
Original Bet Odds
Hedge Bet Odds (Opposite Side)
Strategy
Kelly Criterion
Mathematically optimal bet sizing. Enter the odds, your estimated true odds, and your bankroll. Most sharp bettors use Half or Quarter Kelly.
Bankroll ($)
Book's Odds
Your Win Prob %
Disclaimer: These tools are for informational and entertainment purposes only. They do not guarantee profit. All betting involves risk. Please gamble responsibly and within your means. Problem gambling helpline: 1-800-522-4700.