Bowling Score Calculator
Score a ten-pin bowling game frame by frame from scorecard marks (X, /, -) or pin counts, including the tenth frame and games in progress.
The running total in every frame, the final score or the score so far with the most the game can still reach, and the count of strikes, spares, open frames and pins knocked down.
Example: X 9/ 7- X X 8/ 9- X X XX8 scores 208; twelve strikes score 300; 9/ 8- X 7 is 26 after two frames with 246 still possible.
Ten frames,
bonus balls.
How strikes and spares borrow from the next balls, what the tenth frame allows, how marks are read, and how the best finish is found.
Strikes and spares
An open frame scores the pins knocked down. A spare scores 10 plus the next ball; a strike 10 plus the next two balls — so a frame’s total can only be written once those balls are thrown, which is why the scorecard shows “…” until then.
The tenth frame
A strike in the tenth earns two more balls, a spare one more, so the frame can have three balls: XXX is 30, 9/X is 20. The game ends after the tenth frame’s last ball; extra marks are rejected.
Reading the marks
X is a strike, / a spare, - a miss and F a foul (no pins), digits count pins. Spaces and bars are ignored. Or enter pin counts separated by commas — 10 on a full rack becomes a strike, a second ball that clears the rack a spare.
Most still possible
For a game in progress, the page finishes it with the best balls left — a spare on the pins standing, strikes on every full rack — and scores that. A perfect game is 300. Inputs stay in your browser; the same anonymous usage counts as the rest of the site apply.