Heads-Up Poker Equity Calculator
Estimates your equity percentage in a heads-up Texas Hold'em hand based on hand strength, board texture, and number of live outs. Use it to study pre- and post-flop all-in decisions.
About this calculator
Equity in poker is the share of the pot you expect to win on average if the hand were run out many times. This calculator approximates equity using hand-type categories (pocket pair ≈ 80%, ace-high ≈ 65%, suited connectors ≈ 45%, other ≈ 35%) as a baseline, then adjusts for board texture (dry boards preserve equity at 1.0×; wet boards reduce it to 0.85×; semi-wet to 0.9×). Draw outs are added using the rule of 2 and 4: each out contributes approximately 4% equity with two cards to come and 2% with one card to come. The combined formula is: equity = baseEquity × boardMultiplier + (draws × cardsToCome%). Understanding your equity guides decisions about calling all-ins, sizing bets, and semi-bluffing with drawing hands.
How to use
You hold suited connectors (base equity 45%) on a wet board (multiplier 0.85) with one card to come and 9 flush draw outs. Step 1: base × texture = 45 × 0.85 = 38.25%. Step 2: draw contribution = 9 outs × 2% = 18%. Step 3: total equity = 38.25 + 18 = 56.25%. Enter 'suitedConnectors', 'wet', '1', and 9 into the calculator to confirm. This tells you that you are a slight favourite and should generally be comfortable getting chips in.
Frequently asked questions
How do I calculate poker equity with outs using the rule of 2 and 4?
The rule of 2 and 4 is a quick mental shortcut: multiply your number of outs by 4 when two cards remain (flop to river) and by 2 when one card remains (turn to river). For example, a flush draw with 9 outs gives roughly 36% equity on the flop and 18% on the turn. This approximation is accurate to within 1–2% for most practical hand situations.
What does board texture mean in poker and why does it affect my equity?
Board texture describes how interconnected the community cards are. A dry board (e.g., K-7-2 rainbow) gives few drawing opportunities to either player, so made-hand equity is preserved. A wet board (e.g., 9-8-7 two-tone) creates many straight and flush draws, meaning your current best hand is more vulnerable. Recognising texture helps you size bets correctly to deny equity to drawing hands.
When should I use an equity calculator during poker study sessions?
Equity calculators are most valuable away from the table during hand review. After a session, identify spots where you were unsure whether to call or fold an all-in, then plug in the hand types and board to see your actual equity. Repeated exposure builds intuition so you can make accurate on-the-fly estimates during live play without needing a tool.