how to measure shoulder width

To measure shoulder width accurately, follow these steps:

1. Stand up straight with your arms relaxed at your sides and shoulders level.
2. Locate the bony protrusions at the top of your shoulders (called acromion bones). You can find these by feeling the outer edges where your shoulder curves into your arm.
3. Have someone help you measure the distance between these two points across the back of your shoulders with a flexible measuring tape. The tape should be straight and level.
4. Record the measurement in inches or centimeters.

If measuring by yourself without help:

1. Take a well-fitting T-shirt.
2. Lay it flat on a table, smoothing out wrinkles.
3. Measure the distance between the shoulder seams across the back.
4. Record this measurement.

For best accuracy, stand with good posture, ensure the tape is level, and measure at the widest part of the shoulders, about 1 to 2 inches (2.5 to 5 cm) below the neckline. This measurement is also known as the biacromial breadth or shoulder-to-shoulder width.