🦆 Official National Duckpin Bowling Congress (NDBC) Rules
DUCKPIN BOWLING
SCORE CALCULATOR
Track and score your Duckpin games with authentic 3-ball frames, automatic strike and spare compounding, and real-time AI score projections.
🦆 DUCKPIN RULES (3 BALLS / FRAME)
🎳Bowler 1
AI Duckpin Projection
120Average
Max Possible
300WR: 279
Total Score
0points
Marks & Tens
0 Strikes / 0 Spares
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Select Roll forFrame 1, Ball 1Duckpin rules: 3 balls allowed every frame
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Duckpin Scoring Rule Guide
Ball 1: Strike (X)10 pins + pinfall of next 2 balls.
Ball 2: Spare (/)10 pins + pinfall of next 1 ball.
Ball 3: Ten (10)10 pins total. No bonus points awarded!
Open Frame (< 10)Count of pins knocked down in all 3 balls.
🏆Duckpin World Record: 279
Unlike 10-pin bowling where 300s are bowled daily, no person has ever bowled a 300 in sanctioned Duckpin history! Pete Schmitt's 279 in 1992 stands unbroken.
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Duckpin Bowling vs. Standard 10-Pin Bowling
| Feature | Duckpin Bowling (NDBC) | Standard 10-Pin Bowling (USBC) |
|---|---|---|
| Balls Per Frame | Up to 3 balls in every frame | Up to 2 balls (3 in 10th only) |
| Ball Diameter & Weight | 4.75–5.00 inches (~3 lbs 12 oz, no holes) | 8.5 inches (up to 16 lbs, drilled holes) |
| Pin Dimensions | 9.4 inches tall, wider belly | 15 inches tall, standard neck |
| Deadwood Rules | Fallen pins remain on the lane during frame | Swept away after each ball by the pinsetter |
| All-Time High Score | World record: 279 (Pete Amore, 1992) | World record: 300 (frequently achieved) |
| Sanctioning Body | National Duckpin Bowling Congress (NDBC) | United States Bowling Congress (USBC) |
Duckpin Scoring Rule Guide
Because duckpin balls are light and lack finger holes, and duckpins are shorter and harder to knock down through chain-reaction pin carry, the sport grants bowlers a third delivery in every frame:
Ball 1: Strike (X)
10 pins + pinfall of next 2 balls.
Ball 2: Spare (/)
10 pins + pinfall of next 1 ball.
Ball 3: Ten (10)
10 pins total. No bonus points awarded!