Poker Range Analysis Tool — Hero vs Villain Equity Calculator
The most complete free range tool for Texas Hold’em players. Build hand ranges for both Hero and Villain (or lock either side to a specific hand), set any flop, turn, or river, and compute full range-vs-range equity alongside detailed made-hand and draw statistics. Everything runs locally in your browser — no signup, no upload, no waiting.
What This Tool Does
- Hand range selector — Build ranges using a 13×13 grid (click + drag), a top-X% slider, position presets (UTG / MP / CO / BTN / SB / BB-def / 3-bet / 4-bet), or text notation like
22+, AJs+, KQo. - Range vs hand equity — Lock one side to a specific 2-card hand (e.g. AhKs) and the other to a full range, then compute win/loss/tie percentages.
- Range vs range equity — Monte Carlo simulation across both ranges with up to 40,000 iterations for precise results.
- Board analysis — Set any flop, turn, or river. The tool shows made-hand distribution (overpairs, top-pair, sets, two-pair, etc.) and live draw counts (flush draws, OESDs, gutshots, backdoors).
- Opponent range analysis — Switch between Hero and Villain tabs to inspect each side independently, with a faint grid marker showing the opposite side’s range at a glance.
- Copy & swap — One-click “Copy to other side” and “Swap Hero ↔ Villain” for fast scenario comparison.
How to Use the Tool
- Pick a side. Tap the “Hero” tab to start. The active side is highlighted in gold.
- Choose Range or Specific Hand mode. Range mode gives you the full grid, slider, and text input. Specific Hand mode lets you pick exact hole cards.
- Define Hero. Click cells, drag across the grid, hit a position preset, or type notation like
QQ+, AKs, AKo. - Switch to Villain and define their range. The grid will faintly mark Hero’s range too, so you can see overlap.
- Set the board (optional). Tap card slots to pick exact cards, or use “Random flop” / “Random full board” for quick scenarios.
- Read the statistics. Section 3 shows made-hand and draw breakdowns for whichever side is active.
- Run Equity. Section 4 computes Hero vs Villain win percentages on the current board. Pick iterations (2k for speed, 40k for precision) and click Run Equity.
What’s New vs the Old Version
- Two players, not one. Previously you could only analyze one range against the board. Now you have full Hero + Villain support.
- Specific Hand mode. Plug in your exact hand against opponent’s range to see your actual equity.
- Real equity calculations. The old tool only showed how a range hits the board; the new tool answers “what’s my win percentage?”
- Side-aware statistics. Statistics show whichever side is active, with a pill indicating Hero or Villain.
- Workflow shortcuts. Copy hero range to villain, swap sides instantly, build comparison scenarios in seconds.
Frequently Asked Questions
What’s the difference between range-vs-hand and range-vs-range equity?
Range vs hand means one player has known hole cards (e.g. you know you have AhKs) and the other has a probabilistic range. The tool runs your hand against every possible hand in their range.
Range vs range means neither player has known hole cards — both are represented by ranges. This is more realistic for actual play, since you rarely know exactly what your opponent has.
Use range-vs-hand when reviewing your own play after a session. Use range-vs-range when studying spots in the abstract.
How accurate is the Monte Carlo simulation?
Standard 5,000 iterations give results accurate to roughly ±1%. Precise mode (15,000) tightens to ±0.5%. Max mode (40,000) gets you within ±0.3% — close enough for any practical purpose. The tool’s evaluator is verified against textbook equity values: AA vs KK = 81.4%/18.1%, AKs vs QQ = 45.6%/54.0%, 72o vs AA = 11.3%/88.2%, AKs vs random = 66.1%/32.3%.
Can I use this tool to study GTO ranges?
Yes. The position presets are realistic preflop opening ranges. You can build calling ranges, 3-bet ranges, 4-bet ranges, and check how each one performs against different villain ranges on any board texture. For deep GTO study you’d want dedicated solver software, but this tool is excellent for the conceptual work that comes before solver study.
What does “Copy to other side” do?
It copies your current side’s range (or specific hand) to the other side. Useful for symmetric matchups, or as a starting point when Villain’s range is similar to Hero’s.
Why does the grid show faint markers on the other side’s range?
So you can see Villain’s selections while editing Hero’s range. This lets you spot overlap and gaps. The faint outline appears on cells that the other side has selected but you haven’t.
Why are my equity results slightly different each time?
The calculation is a Monte Carlo simulation — it samples random hand combinations and board runouts rather than enumerating all of them. With 5,000 iterations you’ll see variance of ±1% on repeat runs. Bump iterations up to 15k or 40k for tighter results.
Is this tool free? Do I need to install anything?
Completely free, no install, no signup, no data leaves your browser. Everything runs locally on your device. Works on any modern phone or computer.
