Calculate Stack-to-Pot Ratio to optimize your postflop strategy
Calculate stack-to-pot ratio for strategic decisions
Effective stack = the smaller of your stack or your opponent's stack (the maximum either can win)
Stack-to-Pot Ratio: 8.0
Balanced play. Strong draws have value. Two pair+ is usually a stack-off.
SPR
8.0
Zone
Medium SPR
Commitment
55%+ equity
Pots Remaining
8.0
Two pair+, strong draws with fold equity
One pair hands facing big bets
Common SPR scenarios
Quick guide to stack-to-pot ratio zones
| Zone | SPR Range | Stack-Off Range | Key Strategy |
|---|---|---|---|
| Low | 1-4 | Top pair+ (TPGK+) | Commit light, draws bad |
| Medium | 5-10 | Two pair+ | Balanced, semi-bluffs ok |
| High | 11-20 | Sets+, nut draws | Set mine, position key |
| Deep | 20+ | Very strong hands only | Speculative, trap |
Understanding commitment levels
TL;DR summary
Stack-to-Pot Ratio (SPR) = Effective Stack ÷ Pot Size. It determines your commitment level and optimal strategy. Low SPR (1-4): Commit with top pair+, draws lose value. Medium SPR (5-10): Balanced play, two pair+ to stack off. High SPR (11-20): Set mining profitable, position crucial. Deep SPR (20+): Speculative hands gain value, avoid one-pair stacks. Example: $200 stack with $50 pot = SPR of 4 (low).
Important things to know
Common questions about poker SPR
SPR (Stack-to-Pot Ratio) is the ratio of effective stacks to the pot size. If you have $300 effective and the pot is $30, your SPR is 10. It determines how committed you should be to the pot and what hands are worth playing.
SPR guides your postflop strategy. With low SPR, you should be willing to stack off with top pair because you're already pot-committed. With high SPR, you need stronger hands to stack off because you're risking more relative to the pot.
Low SPR hurts drawing hands. With SPR of 2, you can't win enough to justify drawing. High SPR helps draws because implied odds improve. With SPR of 20, flush draws become very profitable because you can win a lot when you hit.
Target low SPR with premium hands (AA, KK) to get stacks in easily. Target high SPR with speculative hands (small pairs, suited connectors) for better implied odds. Adjust raise sizes to manipulate SPR.
Effective stack is the smaller of your stack or your opponent's. If you have $500 and villain has $200, effective stack is $200 since that's the maximum either can win.