Poker Odds Calculator

Calculate your winning odds in Texas Hold This tool processes all data locally in your browser. No information is ever sent to any server. Completely free, no registration required.

How to Use the Poker Odds Calculator

1. Enter your input values above
2. Results update automatically
3. Copy or download the output

What is a Poker Odds Calculator?

A Poker Odds Calculator computes the probability of winning a hand in Texas Hold'em (the most popular poker variant) by calculating your hand's equity against opponents' possible hands — critical for making mathematically sound betting decisions. Poker is fundamentally a game of expected value: knowing you have a 35% chance to win a pot that costs you 20% of its value to call means you should call. This calculator helps you learn these numbers without doing the combinatorial math manually (~2.6 million possible board runouts in Hold'em).

How Does It Work?

Enter your two hole cards, and optionally the community cards (flop, turn, river) and opponents' suspected ranges. The calculator runs the remaining possible board runouts to determine: (1) your probability of winning by showdown, (2) probability of tying (split pot), (3) odds against your hand, and (4) drawing odds (outs) for hands not yet made. For heads-up pre-flop: pocket aces vs. any two cards = ~85% favorite. A flush draw after the flop (9 outs) = ~35% to hit by river.

Formula

Hand Equity = (Win Count + Tie Count/2) ÷ Total Possible Runouts\n\nPre-Flop Equity (heads-up, all-in):\n• AA vs KK: ~82%\n• AA vs QQ: ~81%\n• AK suited vs QQ: ~46%\n• Pair vs two overcards: ~55% pair wins\n• Pair vs lower pair: ~80% higher pair wins\n\nAfter Flop:\nOuts (cards that improve you) × 4% ≈ turn+river probability (Rule of 4)\nOuts × 2% ≈ one street probability (Rule of 2)\n\nExample: 9 outs (flush draw) after flop = 9×4% ≈ 36% (actual: 35%)\nExample: 9 outs after turn = 9×2% ≈ 18% (actual: 19.6%)

Who Uses This Tool?

• Poker players analyzing hand situations for study and improvement
• Beginners learning the fundamental odds of Texas Hold'em
• Home game players settling arguments about who was 'ahead' in a hand
• Coaches teaching probability concepts to poker students
• Game theory enthusiasts exploring the mathematics of incomplete information games

Pro Tips

• The 'Rule of 4 and 2': multiply your outs (cards that complete your hand) by 4 if two cards remain (flop), by 2 if one card remains (turn). Close enough for in-game decisions
• Drawing hands lose value against multiple opponents. A flush draw (35% to hit) is profitable heads-up but loses equity with 3+ opponents when you might hit and still lose to a full house
• Position matters more than starting hand odds. The same hand (e.g., 9♠8♠) is playable on the button but should usually be folded from early position
• Pot odds are the comparison of call amount to pot size. If pot is $100 and opponent bets $25, pot odds are 25:125 = 5:1. If your draw odds are 4:1 or better, call

Frequently Asked Questions about Poker Odds Calculator

What are the odds of being dealt pocket aces?

1 in 221 (or 0.45%). The odds of being dealt ANY pocket pair are 1 in 17 (5.9%). Of being dealt ace-king suited?: 1 in 332 (0.3%).

What's the best starting hand in Texas Hold'em?

Pocket Aces (AA) — it's the mathematical favorite against any other single hand, winning ~85% of the time heads-up against even the next-best hands (KK). However, against 3+ opponents, AA's equity drops significantly (~64% against 3 random hands).

Free online Poker Odds Calculator — no signup, 100% client-side processing. All data stays in your browser.