How to Use a HUD in Online Poker: The Complete Guide to Stats and Software

If you play online poker without a HUD, you're leaving one of the most powerful analytical tools in the game unused. Your opponents' tendencies — how often they raise pre-flop, how frequently they c-bet, how often they fold to aggression — are being quantified in real time. The question is whether you're reading that data or ignoring it.

A HUD (Heads-Up Display) is software that overlays statistical data about your opponents directly on your poker table interface. It pulls data from hand histories, tracks opponent behavior across thousands of hands, and presents it in compact number displays next to each player's seat.

This guide covers everything you need to use a HUD effectively: how they work, the most important stats, how to interpret them, how to take action based on them, and the critical question of which sites allow them.

How HUDs Work

Every online poker hand you play generates a hand history file — a text log of every action in the hand. HUD software (PokerTracker 4, Hold'em Manager 3, DriveHUD, and others) reads these hand histories as they're created, stores them in a database, and calculates statistical profiles of every player you've encountered.

When you sit at a table, the HUD checks whether you have data on each player. If you do, it displays their statistics next to their username as a compact number panel. The more hands you have on a player, the more reliable the statistics — a sample of 50 hands gives you rough directional data; 1,000+ hands gives you reliable, actionable reads.

The HUD updates in near-real-time: as each hand is completed and the hand history is written, the HUD reprocesses the data and updates the stats display within seconds.

The Most Important HUD Statistics

VPIP — Voluntarily Put Money In Pot

VPIP measures the percentage of hands a player voluntarily calls or raises pre-flop (excluding forced blinds). It's the most fundamental indicator of playing style.

• 0–15%: Very tight/nit. Only plays premium hands. Rarely bluffs. When they bet, they have it.
• 16–22%: Solid TAG (Tight-Aggressive). Standard solid player range. Most winning regulars fall here.
• 23–30%: Loose-aggressive tendency. Plays more speculative hands. Can be either a skilled LAG or a fishy caller.
• 30%+: Loose. Playing a wide range including many weak hands. Often a recreational player or fish.

PFR — Pre-Flop Raise

PFR measures how often a player raises (rather than calls or folds) pre-flop. It's always compared against VPIP.

• PFR close to VPIP: Player raises most hands they play. Aggressive, rarely limps. Hard to put on hands.
• Large gap (VPIP much higher than PFR): Player limps frequently. Classic passive/recreational profile. Limpers are exploitable — they're announcing weak hands that want to see cheap flops.
• Typical winning player: VPIP 20%, PFR 16–17% (small gap). Tight, aggressive, rarely limps.

3-Bet %

How often the player 3-bets (re-raises) when facing an open raise. Average is around 6–9% overall, with position significantly affecting the range.

• Under 4%: Very tight 3-bet range. Only re-raising premium hands. Fold to their 3-bets; call their 4-bets only with the absolute best hands.
• 6–9%: Balanced range. Mix of value hands and some light 3-bets.
• 12%+: Wide 3-bet range. Either a skilled LAG applying pressure or a player who 3-bets too loosely. Either way, call or 4-bet more vs. them.

C-Bet % (Continuation Bet)

How often a player c-bets (bets the flop after raising pre-flop). Average c-bet rate is around 55–70%.

• 80%+: Over-betting the flop. Their c-bet range is too wide — many c-bets are weak. Counter: float (call in position), check-raise out of position.
• 40–65%: Selective c-better. Their bets carry more weight. Don't float as aggressively.
• Under 35%: Very selective c-better or trapper. Treat their c-bets as strong until you have contrary evidence.

Fold to C-Bet %

How often a player folds when facing a continuation bet. Critical for knowing when to c-bet as a bluff.

• 60%+: Folds too much to c-bets. C-bet almost every flop against this player — high fold equity makes it profitable.
• 40–55%: Normal range. Standard c-bet strategy applies.
• Under 35%: Station/calling station. Stop bluffing; only value-bet strong hands.

AF — Aggression Factor

AF measures the ratio of bets+raises to calls post-flop. High AF = aggressive post-flop player; low AF = passive caller.

• AF 4+: Very aggressive. Bets and raises much more than they call. Can be a solid player or a maniac — check other stats.
• AF 2–3: Normal aggressive range for winning players.
• AF under 1.5: Passive. Calls more than they raise. Value-bet relentlessly; don't bluff.

WTSD — Went to Showdown %

How often a player reaches showdown when seeing the flop. Average is around 24–27%.

• 30%+: Calling station. Goes to showdown with many weak hands. Stop bluffing; only bet for value.
• 20% or lower: Fold-happy. Will fold to pressure on later streets. Bluffing is more effective.

Building Your HUD Layout

Most HUD software lets you customize what stats appear. For beginners, a simple layout works best:

Basic 6-stat layout (for each player):

VPIP / PFR / 3B%
C-Bet% / Fold-C-Bet% / AF

This gives you the most important pre-flop profile (VPIP/PFR), 3-bet frequency, and the two most actionable post-flop stats. As you get comfortable, add WTSD, positional stats, and more granular turn/river stats.

Intermediate layout additions:

• Fold to 3-bet % — crucial for knowing when to 3-bet light
• Positional VPIP/PFR — players often play very differently BTN vs. UTG
• Turn c-bet % / Fold to turn c-bet %
• River bet % / Fold to river bet %

Taking Action Based on HUD Data

Data without action is worthless. Here's how to translate specific HUD reads into tactical adjustments:

Multi-Tabling With a HUD

One of the primary use cases for HUDs is multi-tabling — playing 4, 8, or more tables simultaneously. Without a HUD, multi-tabling forces you to play purely on default strategies because you can't track individual tendencies across many tables at once. With a HUD, player profiles persist across sessions, letting you apply reads even on tables you've just joined.

Multi-tabling with a HUD workflow:

1. Open all tables, let the HUD populate: On first join, you'll have zero data on new players. As you play hands, the HUD accumulates data.
2. Prioritize action on tables with reads: If you have 500+ hands on a player, act with confidence on HUD-driven adjustments. If you have 30 hands, treat it as directional data only.
3. Use pop-up stats for specific situations: Most HUDs let you click a player to see extended stats (by position, by street, etc.). Use this on the tables requiring your current decision.
4. Review sessions in the database: After sessions, replay key hands and analyze how well your HUD-driven decisions held up. This is how you calibrate your adjustments over time.

Which Sites Allow HUDs?

HUD legality varies significantly by poker site — and it's critical to know the rules before using one.

Always verify a site's current Terms of Service before using HUD software. Policies change, and using banned software can result in account suspension.

Popular HUD Software

• PokerTracker 4 (PT4): Industry standard. Comprehensive stats, customizable HUD, hand replayer, leak finder reports. Best for serious players.
• Hold'em Manager 3 (HM3): The other major option alongside PT4. Similar feature set; some players prefer its interface.
• DriveHUD: Simpler interface; good for beginners getting started with HUD play.
• Hand2Note: Popular for high-volume players; strong population analysis features.

HUD Limitations: What the Numbers Don't Tell You

A HUD is a powerful tool but not a replacement for thinking. Key limitations:

• Small sample sizes lie: A player who's 3-bet 5 times in 40 hands might have a 12.5% 3-bet stat that looks wild — but it could be 5 value hands in a short run. Wait for 100+ hands before acting heavily on any single stat.
• Players evolve and adjust: HUD data reflects historical play. A player who studied GTO concepts last month plays differently than the HUD profile from six months ago suggests.
• Population stats ≠ individual stats: Some HUDs show "population" data when individual sample sizes are small. Be aware of when you're reading individual data vs. population averages.
• Doesn't capture tells or physical reads: Timing tells in online poker are partially captured (some software tracks action speed) but HUDs primarily track long-run statistical tendencies, not in-hand dynamics. Combine HUD data with timing observations and bet sizing patterns for the fullest picture.

A HUD gives you the statistical foundation to apply exploitative adjustments systematically rather than relying on gut feeling. Pair it with strong fundamentals from the starting hands guide and poker odds knowledge — and keep your free poker hands chart on hand as you build your online game. The poker hand rankings collection has visual references for every playing environment.