Range Explorer — Flopzilla-Style Range vs Flop Analyzer

What is range vs flop analysis?

Equity tells you how often a range wins at showdown. A hit distribution tells you something different and often more useful: what the range actually is on a specific flop — how many combos made a set, top pair, a flush draw, or nothing at all. This is the analysis desktop tools like Flopzilla made famous, and until now there has been no real way to do it free in a browser: this page enumerates every combo in your range against the exact three cards you pick and buckets each one, with combos blocked by the board removed automatically.

The reason it matters: postflop decisions are texture decisions. The same 13% opening range is a completely different animal on A-7-2 rainbow than on 9-8-7 two-tone, and the numbers below show exactly how different.

How to use hit distributions to plan c-bets

• → Compare your range to theirs, not to the board. Run your opening range, then run their likely calling range on the same flop. Whoever's distribution holds more strong hands and fewer air combos "owns" the texture and gets to bet more often.
• → High air % + range advantage = small frequent c-bets. On A-7-2 rainbow a tight opener holds all the AA/AK-type hands the caller mostly can't have, so a small bet with nearly everything works even though ~29% of the range is air.
• → High draw % = polarize and size up. On middling connected boards your strong hands want protection and your draws want fold equity — the classic big-bet, lower-frequency texture.
• → Check the turn heatmap before you barrel. If most turn cards crater your "top pair or better" share, prefer betting the flop now; if many turns improve you, checking back marginal hands costs less.

Worked example: one UTG range, two flops

Take a standard ~13% UTG open — 22+, ATs+, KTs+, QTs+, JTs, T9s, 98s, AJo+, KQo (174 combos). Paste that string into the tool and use the A72-rainbow and 987-two-tone texture buttons. Exact results from this engine:

On A-7-2 rainbow the range is pair-heavy and draw-free: 71.1% of combos hold a pair, a quarter of the range is top pair (25.7%), and there is not a single flush draw or open-ender. Betting small at a high frequency is near-unexploitable here. On 9-8-7 two-tone the same range makes a pair less than half the time, but 23.9% of it is a live draw with no pair yet (and the overlay shows 6.1% flush draws and 16.6% open-enders overall, including pairs with draws). Every overpair — 18.4% of the range — is one card from being shown a straight. Same preflop range, opposite postflop plan: bigger bets, fewer bluffs, more caution on bad turns. The heatmap makes that concrete: for the UTG range on A♠7♥2♦, tens are the best turn cards (~35% top pair or better) and the remaining aces are the worst (~24%), because they block the range's own Ax while adding trips the caller can share.

What desktop Flopzilla still does better

Honest answer: this tool covers the core loop — range in, flop in, exact hit distribution out — and for that job it matches desktop output because both are exact enumeration. But Flopzilla (and Flopzilla Pro) still do things we don't: percentage-weighted ranges (here a hand is in or out, never "30% in"), interactive filters that cascade into equity calculations, equity vs a second range inside the same view, multi-street filtering down to river distributions, and saved range trees. If you study seriously and can spend ~$25-35, desktop is still worth it. If you want the 80% use case — "how often does this range hit this flop?" — free and on any device including your phone, that is exactly what this page is for. For range vs range equity (rather than hit distribution), use our range equity calculator alongside this tool.

Methodology & edge cases

Every combo lands in exactly one bucket, so the list sums to 100%. The classification is hole-card-centric — the same convention Flopzilla uses — and these are the edge-case rules, spelled out so you can trust the numbers:

1. 1. Set vs trips. A set is a pocket pair plus a matching board card (77 on A-7-2); trips is a paired board plus one matching hole card (A7 on 7-7-2). They are separated because they play differently.
2. 2. Two pair requires both hole cards. A7 on A-7-2 is two pair. 87 on K-K-7 is not — the board pair is community property, so it counts as a weak pair. A pocket pair on a paired board (99 on K-K-7) is likewise classified by where the pocket pair sits, not as two pair.
3. 3. Board-made hands don't count for you. A2 on K-K-7 technically "has a pair of kings", but every hand does, so it files under air. Straights, flushes, and straight flushes must beat whatever the board makes by itself.
4. 4. Pair sub-buckets. Overpair > every board card; top pair matches the highest board rank; middle pair matches the second rank (or is a pocket pair between the top two); weak pair covers lower board pairs; underpair sits below the whole board.
5. 5. Draws must use a hole card, and 8-out draws are grouped. A flush draw is exactly four to a flush including at least one hole card. Straight draws are counted by completing ranks: two or more ranks = OESD/double gutter (8 outs), one rank = gutshot (4 outs). Draw buckets only hold combos with no pair; the overlay counts draws attached to made hands separately.
6. 6. Card removal is automatic. Combos containing a board card are removed before percentages are computed (A♠x combos vanish on an A♠ flop), and the turn heatmap re-removes combos per candidate card.

Frequently asked questions