Four outs
A four-out gutshot is less than 9% on the next card with 47 unseen cards.
Poker Outs Chart
Compare one through twenty outs using exact next-card and by-river probability, odds against, and mental-rule estimates. The poker outs chart calculates every row from combinations and lets you filter the useful range rather than copying a static table.
| Outs | Next card | Rule of 2 | Rule 2 error | By river | Rule of 4 | Rule 4 error | Odds against next |
|---|---|---|---|---|---|---|---|
| 1 | 2.13% | 2.00% | -0.13 pp | 4.26% | 4.00% | -0.26 pp | 46.00 : 1 |
| 2 | 4.26% | 4.00% | -0.26 pp | 8.42% | 8.00% | -0.42 pp | 22.50 : 1 |
| 3 | 6.38% | 6.00% | -0.38 pp | 12.49% | 12.00% | -0.49 pp | 14.67 : 1 |
| 4 | 8.51% | 8.00% | -0.51 pp | 16.47% | 16.00% | -0.47 pp | 10.75 : 1 |
| 5 | 10.64% | 10.00% | -0.64 pp | 20.35% | 20.00% | -0.35 pp | 8.40 : 1 |
| 6 | 12.77% | 12.00% | -0.77 pp | 24.14% | 24.00% | -0.14 pp | 6.83 : 1 |
| 7 | 14.89% | 14.00% | -0.89 pp | 27.84% | 28.00% | +0.16 pp | 5.71 : 1 |
| 8 | 17.02% | 16.00% | -1.02 pp | 31.45% | 32.00% | +0.55 pp | 4.87 : 1 |
| 9 | 19.15% | 18.00% | -1.15 pp | 34.97% | 36.00% | +1.03 pp | 4.22 : 1 |
| 10 | 21.28% | 20.00% | -1.28 pp | 38.39% | 40.00% | +1.61 pp | 3.70 : 1 |
| 11 | 23.40% | 22.00% | -1.40 pp | 41.72% | 44.00% | +2.28 pp | 3.27 : 1 |
| 12 | 25.53% | 24.00% | -1.53 pp | 44.96% | 48.00% | +3.04 pp | 2.92 : 1 |
By-river means at least one hit
The two-card column subtracts the probability of missing both cards from one. It assumes the outs set remains fixed after the turn.
A chart cannot validate your outs
The table converts a count; it cannot detect duplicate, dirty, or counterfeit outs. Enumerate the cards first when hand context matters.
Approximation error is visible
Rule-of-2 and Rule-of-4 columns are quick estimates. Comparing them with exact values shows when convenience costs meaningful precision.
Worked examples
Fifteen nominal outs
Large combo draws make shortcut error more visible and also deserve extra scrutiny for dirty outs.
Frequently asked questions
Why does the chart assume 47 unseen cards?
It models a flop after two hole cards and three board cards are known.
Can one card count twice?
No. Physical outs must be unique.
Does by-river add turn and river percentages?
No. It uses the complement of missing both, avoiding double counting.
Can I download the rows?
The browser can generate a local CSV without uploading data.