How accurate is the poker odds calculator?

With 10,000 Monte Carlo simulations, results are typically accurate to within 1 percentage point of the true mathematical odds.

Does it account for multiple opponents?

The current calculator compares your hand against one random opponent hand. For multi-way pots, your equity will be lower as more opponents means more hands that can beat yours.

Why do my odds change when I add board cards?

Adding community cards narrows the possible outcomes. Pre-flop, many scenarios exist. By the river, only one opponent hand matters. A pair of Aces starts at 85% pre-flop but can drop to 0% if the board completes an opponent's flush.

What is a coin flip in poker?

A coin flip is a roughly 50/50 matchup pre-flop, typically a pair vs two overcards. Example: JJ vs AKs is ~54% vs 46%. These are not actual 50/50 but close enough that the term stuck.

What are the odds of pocket Aces?

You'll be dealt pocket Aces once every 221 hands on average (0.45% probability). Against a single random hand, Aces win about 85% of the time.

Poker Odds Calculator | Free Texas Hold'em Odds

How the Poker Odds Calculator Works

This calculator uses Monte Carlo simulation to estimate your odds of winning a Texas Hold'em hand. It deals out 10,000 random scenarios, evaluates all possible 5-card combinations from the 7 available cards (your 2 hole cards + 5 community cards), and compares the best hands to determine win, tie, and loss rates.

How to Use

Click the "+" slots under "Your Hand" to select your two hole cards
Optionally add community cards (flop, turn, river) if you want specific board scenarios
Click "Calculate Odds" to run 10,000 simulations
Results show your win%, tie%, and loss% against a random opponent hand

Understanding the Results

The results show your equity against a single random hand. In a real game, your opponent won't have a random hand — they've already decided to play. So use these numbers as a baseline. Premium hands like pocket Aces (~85% vs random) drop to roughly 65-80% against a reasonable opponent range.

Pre-Flop Odds: Common Matchups

Knowing pre-flop odds by heart gives you an edge in every session. Here are the matchups you'll see most often:

Overpair vs Underpair

AA vs KK — 82% vs 18% (the classic cooler, just get it in)
KK vs QQ — 82% vs 18%
QQ vs JJ — 82% vs 18%

Any overpair vs underpair is roughly 82/18. The gap narrows slightly with lower pairs (e.g. 55 vs 44 is ~81/19) because more overcards exist to split.

Pair vs Overcards

JJ vs AKs — 54% vs 46% (the classic "coin flip")
JJ vs AKo — 57% vs 43%
22 vs AKo — 52% vs 48%
TT vs AQs — 55% vs 45%

Pair vs two overcards is close to 50/50, slightly favoring the pair. Suited overcards gain ~3% equity from flush potential. These "coin flips" are where tournament fortunes are made and lost.

Dominated Hands

AK vs AQ — 74% vs 26% (domination — AQ needs a Queen)
AK vs AJ — 74% vs 26%
KQ vs KJ — 73% vs 27%
AK vs KQ — 73% vs 27%

When both players share a card, the one with the higher kicker is a ~3:1 favorite. This is why playing dominated hands (KJ vs AK) is so costly — you're drawing to only 3 outs.

Suited Connectors vs Big Pairs

AA vs 87s — 77% vs 23%
KK vs JTs — 78% vs 22%
QQ vs 98s — 78% vs 22%

Suited connectors have the best equity of any non-pair hand against big pairs because they can make straights and flushes. They're still heavy underdogs pre-flop, but their post-flop potential justifies calling with good pot odds.

Post-Flop Odds

Pre-flop odds are just the beginning. Add board cards to see how the flop changes everything:

Flop Scenarios

Overpair vs flush draw — ~65% vs 35% (flush draw has 9 outs twice)
Overpair vs open-ended straight draw — ~68% vs 32%
Top pair vs flush draw + straight draw — ~45% vs 55% (combo draws are monsters)
Set vs flush draw — ~74% vs 26% (set can still improve to full house)

Use this calculator to explore specific flop scenarios. Add your hole cards and three community cards to see exact equity — it's the fastest way to study post-flop situations.

What Is Monte Carlo Simulation?

Monte Carlo simulation is a mathematical technique that uses random sampling to estimate results. Instead of calculating every possible outcome (which can number in the billions), it randomly deals thousands of complete hands and counts the results. With 10,000 simulations, the accuracy is typically within 1% of the exact answer — more than enough for practical poker decisions.

Using Odds at the Table

Memorizing pre-flop odds helps, but the real skill is combining odds with pot odds and opponent reading. If you know your hand has 35% equity and you're getting 3:1 pot odds (25% needed), calling is profitable long-term. Check our outs calculator for quick draw equity, and see the poker hand rankings to understand which hands beat which.

Poker Odds Calculator