Calculate a bowling score from each frame: enter strikes (X), spares (/) and pin counts for all ten frames to get the final tenpin score and frame totals.
Bowling Score Formula or Method
An open frame scores its pinfall, a spare adds the next delivery, and a strike adds the next two deliveries. The tenth frame supplies fill balls after a strike or spare but does not create an eleventh frame.
How the Calculation Works
The calculator applies the displayed relationship or scoring method to the visible required inputs and reports one defined result with supporting detail.
How to Use This Calculator
- Enter all ten completed frames using X for a strike, / for a spare, and – or 0 for a miss.
- Enter or select every visible required value.
- Select Calculate and review the primary answer, supporting values, and steps.
- Use Reset before starting a different game or scenario.
Worked Example
The mixed game X, 7/, 9-, X, -8, 8/, -6, X, X, X81 scores 167. The last frame contributes 19 because its strike is followed by 8 and 1.
Input and Result Guide
| Item | How to use it |
|---|---|
| X | Strike: all ten pins on the first delivery. |
| 7/ | Spare: seven pins, then the remaining three. |
| 9- | Open frame: nine pins, then zero. |
| X81 | Tenth-frame strike followed by fill deliveries of eight and one. |
| 5/5 | Tenth-frame spare followed by a five-pin fill delivery. |
Interpreting the Result
Compare results only when the scoring format, league settings, units, and sample definitions are consistent.
Assumptions and Limitations
This tool scores traditional tenpin games only. It does not apply World Bowling current-frame scoring, no-tap formats, Baker team rotation, fouls that require special pin respotting, or local tournament variants.
Common Questions
How do I include tenth-frame bonus rolls?
Include them in Frame 10: X81 is a strike followed by eight and one; 5/5 is a spare followed by five.
Will my last successful calculation be restored?
Yes. The calculator saves the last successful calculation in this browser. Edits are marked as changed until Calculate is selected again. Reset clears the saved state.
Sources
United States Bowling Congress, How to Score a Game; United States Bowling Congress, Playing Rules, current 2026-27 season.
