Poker MDF Calculator
Calculate Minimum Defense Frequency against a bet using the pot size and bet size. Use MDF as a range-construction study reference, not as a rigid strategy rule.
MDF66.7%
MAX FOLD FREQUENCY33.3%
BET / POT50.0%
MDF = pot before the bet ÷ (pot before the bet + bet). In the simplified bluff-defense model, this is the minimum portion of a range that continues so the bettor cannot profit solely by bluffing at that size.
POT AFTER BET15.00
CALL / FINAL POT25.0%
DEFENSE REFERENCE66.7%
Real defense decisions depend on ranges, equity realization, position, blockers, future streets, rake and bet sizing sequences. MDF is a mathematical reference, not a command to defend a fixed percentage of hands.