To measure lapel width, calculate the horizontal distance from the inner fold line to the outer edge at the widest point.

Measure lapel width by placing the jacket flat on a hard surface. Locate the widest part of the lapel, typically found just below the collar join. Use a ruler to measure horizontally from the inner seam, where the lapel rolls, to the outer edge. Ensure the measurement is perpendicular.

Step-by-Step Measurement Instructions

1. Prepare the garment: Lay the jacket on a flat, stable surface. Smooth out any wrinkles or folds in the fabric to ensure the material sits naturally.
2. Identify the widest point: Look for the widest section of the lapel. On most notched or peaked lapels, this point is located near the top where the lapel and collar meet.
3. Align the measuring tool: Place the start of a ruler or fabric tape at the inner fold, also known as the roll line.
4. Measure to the edge: Extend the tool straight across to the outermost edge of the lapel. Do not measure at an angle, as this will result in an incorrect width.

Comparison of Measurement Tools

Standard Lapel Width Categories

• Narrow Lapels: These typically measure between 2.0 and 2.75 inches. This width is common in modern, slim-fit suit designs.
• Standard Lapels: Usually measuring between 3.0 and 3.5 inches, these are considered the classic width for professional and business attire.
• Wide Lapels: Any measurement exceeding 3.75 inches is classified as wide. These are often found on double-breasted jackets or vintage-inspired styles.

Ensuring Accuracy

For the most consistent results, always measure both the left and right lapels. While they should be identical, small variations in handmade garments can occur. Keeping the garment completely flat is essential for a precise reading. Avoid stretching the fabric during the process, as this can distort the measurement of the width.