FREE BROWSER TOOL

Tenpin score explainer

Change the example, calculate and inspect the result.

Inputs are processed locally and are not uploaded. Editing a field clears the previous result to prevent exporting stale calculations.

How this tool works

For frames 1-9, an open frame scores its pins; a spare scores ten plus the next delivery; a strike scores ten plus the next two deliveries. The tenth sums its deliveries, with one fill ball after a spare or two after a strike. A fill ball does not create another frame. Inputs must describe a complete ten-frame game. Basic notation: X for strike, / for spare, - for zero, and digits for pinfall. This tool does not adjudicate fouls, dead balls or competition disputes.

Check a worked example

The default game has ten 9- open frames and scores 90. For a perfect-game check, enter X in frames 1-9 and XXX in frame 10: the total is 300. Ten 5/ spares with 5/5 in the tenth score 150. Edit any frame, then calculate again to see its effect on earlier bonuses.

Understand the limits

Use the result as an explanation or planning estimate. It is not a booking, official score record, professional lesson, supplier quote or guarantee. Replace illustrative inputs with confirmed details. Exported CSV values retain calculation precision even when the screen rounds amounts.