bb/100 means big blinds won per 100 hands. It is the standard way to measure a poker win rate, especially online, because it works at any stake. Winning $2.50 per 100 hands at $0.25/$0.50 is the same skill level as winning $100 per 100 hands at $10/$20: both are 5 bb/100.
How to calculate bb/100
bb/100 = (total profit ÷ big blind) ÷ hands played × 100
Example: you win $600 at NL100 ($0.50/$1) over 12,000 hands. $600 ÷ $1 = 600 big blinds. 600 ÷ 12,000 × 100 = 5 bb/100.
What is a good bb/100?
- 0–2 bb/100: a small winner, often after rake.
- 3–5 bb/100: a solid winner in online 6-max games.
- 5–10 bb/100: a strong winner, usually at lower stakes.
- 10+ bb/100: exceptional, or a sample that is still too small.
How many hands do you need?
Poker has huge variance. A sample of 10,000 hands can still be off by 10 bb/100 or more in either direction. Most players need 50,000 to 100,000 hands before their bb/100 is a reliable guide. The poker variance simulator shows how wide the swings can be.
bb/100 vs hourly rate
Live players see about 25–35 hands an hour, so they usually track big blinds per hour or dollars per hour instead. 10 bb/100 live is roughly 3 big blinds per hour. The free poker tracker shows both, and the win rate calculator converts between them.