How it works
Find your standard jacket size based on your chest circumference measurement.
Input query strings and outputs
Use an input name in this page’s URL as ?name=value, and join additional inputs with &. Portable shared links may instead use the compact ?ac= state parameter.
Input query strings
1-
?chest=Chest Size (inches)Number · Optional · Default: 40
Outputs
1-
resultResultText · Primary output
result contains the calculator’s complete rendered result area, including its visible result cards, tables, charts, and messages.
Determine your standard jacket size from chest measurements
Description
The Jacket Size Calculator is a quick reference for finding the right fit for blazers, coats, and hoodies. Because outerwear is meant to be worn over other layers, finding the correct base size is essential for comfort and style. This tool maps your physical chest measurement to the standard industry Alpha sizing scale for men.
Inputs
- Chest Size (inches): Measure around the fullest part of your chest, keeping the tape horizontal under your arms and across your back.
Outputs
- Jacket Size: The corresponding Alpha size (e.g.,
M,L,XL).
Chart
- N/A: This tool provides a categorical sizing result.
“Good to Know”
- Layering: If you plan to wear thick sweaters under your jacket, it’s often best to choose one size larger than the calculator suggests.
- Aesthetic Fit:
- S (34-36”)
- M (38-40”)
- L (42-44”)
- XL (46-48”)
- Sleeve Length: Note that while your chest determines the core size, you may still need to check sleeve lengths if you have particularly long or short arms.
Examples
Example 1: Slim Build
- Input: 35 inches
- Output: S
Example 2: Average Build
- Input: 40 inches
- Output: M
Example 3: Broad Build
- Input: 46 inches
- Output: XL