MDF, in the world of poker, is like a protective shield for players. It’s the minimum percentage of time you should call or raise to prevent your opponents from exploiting you by bluffing too much. In essence, it’s a fundamental concept that helps players strike a balance between folding too often and calling too frequently in response to aggressive and competent, balanced opponents when holding a medium-strength hand.
Calculating MDF is quite simple; however, when calculating, be sure to understand that the pot size is the size of the pot before villain bets:
- MDF = Initial Pot Size / (Initial Pot Size + Bet Size)
Our simple MDF calculator below reveals your minimum defense frequency; all you need to input is the initial pot size and the bet sizing you’re facing.
Poker MDF Calculator
Minimum Defense Frequency (MDF) in poker represents the minimum percentage of hands you should continue with when facing a bet, to prevent your opponent from profitably bluffing. It is calculated based on the initial pot size and the bet size.
