# Jacket Size Calculator > Find your standard jacket size based on your chest circumference measurement. Page: https://askcalculators.com/calculator/jacket-size-calculator/ Definition: https://askcalculators.com/calculator/jacket-size-calculator/definition.json JSON Schema: https://askcalculators.com/calculator/jacket-size-calculator/schema.json Version: 7.0.0 Maintained by: AskCalculators (software project; not a credentialed reviewer) Qualified review: pending. Automated checks do not establish professional approval. Page status: Live Review status: Pending ## Use Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation. Example: https://askcalculators.com/calculator/jacket-size-calculator/?chest=40 ## Inputs - chest: Chest Size (inches); type=number; optional; default=40 ## Outputs - result: Result; format=text; primary ## Formula Chest and body measurements are mapped to the calculator’s published general jacket ranges. ## Rules - Empty optional inputs are undefined, not zero. - Hidden conditional inputs are ignored. - Do not invent missing required inputs. Notice: Sizing charts differ by brand and region; compare the result with the seller or manufacturer chart.