League-rule calculator · step-by-step result

Bowling Handicap Calculator

Calculate one league-bound handicap and keep the exact base, percentage, rounding instruction, above-base policy, and rule citation beside the answer.

Identify the selected rule

The result stays unknown until a current authority and reference are supplied.

Governing body or league Rule reference

Copy the league settings

Fields intentionally have no example defaults.

Player average Scratch/base figure Handicap percentage %

Rounding instruction If average exceeds base

Games in series (optional) I copied these settings from the current league rule or standing sheet; none were guessed from this page.

Auditable result

The answer shows every decision that changes the pin count.

Rule context, not a preset

The official USBC Playing Rules 2026–2027, Rule 100d, says a handicap league uses 100% unless its league rule provides otherwise and drops fractions when figuring handicap or averages. It also states that league rules determine the bowler average used and can alter limits or caps.

This worksheet does not assume your league is USBC-certified and does not replace its adopted rules. It does not store or send your league settings, rule reference, average, percentage, or calculated result. If you explicitly allow optional measurement, the consent choice is stored for this browser session and only named outcome events are sent; the provider may receive ordinary IP, browser/device, cookie or identifier, time, and page metadata.