Frequently Asked Questions
Quick answers to the questions we hear most. If yours isn't here, the how-to guide and glossary cover more, or you can get in touch.
Is the calculator free?
Yes. It's completely free to use, with no account, sign-up, or download required.
Is my data tracked or stored?
No. The entire calculation runs in your browser — the cards you enter and the results never leave your device or get saved on a server. See our Privacy Policy for the full details.
How accurate are the numbers?
Once the flop is dealt, the calculator computes equity exactly by checking every possible run-out, so those figures are precise. Before the flop it uses a Monte Carlo simulation of up to a million random boards, which is accurate to well under a tenth of a percent. That's why a pre-flop percentage may move by a hundredth between runs while a post-flop one stays fixed.
Why do the percentages change slightly when I recalculate?
Only pre-flop (and other very large) situations use simulation, and simulations have a tiny amount of run-to-run variance. Post-flop results are exact and never change for the same inputs.
How many players can I add?
Anywhere from 2 to 10. Empty seats are ignored, so you can model exactly the players you care about.
Do I have to fill in the board?
No. Leave the board empty for a pre-flop matchup, or add the flop, turn, and river as you like. The turn unlocks after a full flop, and the river after the turn.
What are "outs"?
Outs are the cards left in the deck that would improve your hand to a likely winner — for example, the nine remaining cards of your suit when you're on a flush draw. The calculator lists the outs that would put each trailing player into the lead; the Poker Odds page explains how to count them.
What does "drawing dead" mean?
It means no remaining card can give that player the winning hand — their equity is effectively zero. The calculator flags this in its outs verdict.
What's the difference between "win" and "equity"?
Win is how often a player scoops the pot outright. Equity also includes the player's share of split pots, so it's the more complete measure of value — and it's what adds up to 100% across the table.
Does it work on mobile?
Yes. The layout is fully responsive and the card sizes scale to your screen, so it works on phones, tablets, and desktops.
Can I use it for Omaha or other games?
Not currently — the calculator is built specifically for Texas Hold'em, where each player has two hole cards and shares a five-card board.
Is this real-money gambling?
No. This is a mathematical and educational tool. No money is wagered, won, or lost, and nothing here facilitates gambling. See our Terms of Service.