Tools · MDF

Poker MDF (Minimum Defense Frequency) Calculator

Enter pot and bet size to calculate MDF (Minimum Defense Frequency) and alpha for free. See how often you need to defend so pure bluffs don't print.

Current Pot Size

Bet Amount(Pot 0%)

MDF—

Defending at this frequency or higher makes opponent's bluffs unprofitable

Required Bluff Success Rate (α)—

Minimum success rate required for a profitable bluff

Pot Odds—

Minimum equity required to call

Recommended range composition

Value

—

Bluff

—

Theoretically optimal value bet to bluff ratio

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Is the MDF calculator free?: Yes. This MDF calculator is free and works without an account.
How are MDF and pot odds related?: MDF and alpha are complements (MDF = 1 − alpha). Pot odds, by contrast, are the minimum equity required to call and are a separate metric from MDF.
If I defend exactly at MDF, will I win?: MDF is a lower bound so pure bluffs don't print. Real hand selection also depends on range construction, equity realization, and position.
Can I calculate MDF against a raise?: Yes. Switch bet type to raise and enter the opponent's raise size.

FAQ

Is the MDF calculator free?

Yes. This MDF calculator is free and works without an account.

How are MDF and pot odds related?

MDF and alpha are complements (MDF = 1 − alpha). Pot odds, by contrast, are the minimum equity required to call and are a separate metric from MDF.

If I defend exactly at MDF, will I win?

MDF is a lower bound so pure bluffs don't print. Real hand selection also depends on range construction, equity realization, and position.

Can I calculate MDF against a raise?

Yes. Switch bet type to raise and enter the opponent's raise size.