🎳 Bowling Score Calculator

Enter each roll's pin count (0-10), separated by commas, in the order they were bowled. The calculator handles strikes and spares automatically, including 10th-frame bonus rolls.

Rolls (comma-separated, e.g. 10,7,2,9,1,10,...)

Why a frame can be worth more than ten

Bowling scores forward: a mark borrows pins from the rolls that follow it.

Open frame = roll 1 + roll 2
Spare      = 10 + next 1 roll
Strike     = 10 + next 2 rolls

Take the opening of the sample line, 10,7,2,9,1,10. Frame 1 is a strike, so it takes the 7 and the 2 that come next and scores 19. Frame 2 is those same two rolls counted again on their own, 9, for a running 28. Frame 3 is 9 then 1, a spare, so it adds the following roll - a strike - and scores 20, running 48. The whole default line totals 170.

Typing the rolls

One number per ball, in order. Do not write a strike as 10,0; a strike is a single roll and the frame ends there. Writing the phantom zero shifts every later frame.
Tenth frame. A strike or spare there earns bonus balls, so a full game ends with three numbers in frame 10 rather than two. Twelve strikes is 10 repeated twelve times.
Pin counts are 0-10 and anything outside that range, or any non-number, stops the calculation with an error.

The tool scores exactly ten frames and stops. Rolls left over after frame 10 is complete are ignored, and a frame whose bonus balls have not been bowled yet shows "pending bonus roll(s)" with no running total, which is why a part-finished game reads "Game incomplete" instead of a score.

Frequently asked questions

What is the highest score in bowling?

300, from twelve consecutive strikes. Each of the ten frames scores 10 plus the next two strikes, which is 30 a frame, and the last two balls exist only to finish frame 10's bonus.

How do you score a spare in bowling?

Ten pins plus whatever you knock down with the very next ball only. Knock down 9 then 1, then start the next frame with a 7, and the spare frame is worth 17.

Why is a strike worth more than a spare?

A strike collects the next two balls as bonus, a spare collects just one. That is why three strikes in a row is called a turkey - the first of them is finally worth the full 30.