Enter your neck, sleeve, height, and weight to estimate your dress shirt size.
Enter your neck circumference, sleeve length, height, and weight, then select Calculate Dress Shirt Size. The calculator uses your measurements to provide a practical starting size.
The result includes a numeric neck-and-sleeve size, a suggested fit, and an approximate alpha size such as small, medium, large, or extra large.
Numeric dress shirt sizes normally show the collar measurement first and the sleeve measurement second. For example, 15.5 × 34/35 generally means a 15.5-inch neck and a sleeve intended for measurements around 34 to 35 inches.
Wrap the measuring tape around the base of your neck, just below the Adam’s apple. Keep the tape level and leave enough space to slide one finger between the tape and your neck. Record the measurement to the nearest half inch or centimeter.
Begin at the center back of your neck. Run the tape across the shoulder, down the outside of your slightly bent arm, and stop at the wrist bone. Keep the tape following the natural shape of your shoulder and arm rather than pulling it in a straight line.
Remove your shoes and stand upright against a flat wall. Keep your heels on the floor and look straight ahead. Measure from the floor to the top of your head in feet and inches or centimeters.
Place a reliable scale on a hard, level surface. Weigh yourself without shoes and in light clothing, then enter the result in pounds or kilograms according to the selected measurement system.
Many dress shirts use a two-part numeric size. The first number represents the collar or neck size, while the second number represents the sleeve length. Some shirts group two nearby sleeve lengths into one label, such as 32/33, 34/35, or 36/37.
| Example measurements | Example shirt label | What the label means |
|---|---|---|
| 14.5-inch neck, 32-inch sleeve | 14.5 × 32/33 | 14.5-inch collar with a sleeve range around 32 to 33 inches |
| 15.5-inch neck, 34-inch sleeve | 15.5 × 34/35 | 15.5-inch collar with a sleeve range around 34 to 35 inches |
| 16-inch neck, 35-inch sleeve | 16 × 34/35 | 16-inch collar with a sleeve range around 34 to 35 inches |
| 17-inch neck, 36-inch sleeve | 17 × 36/37 | 17-inch collar with a sleeve range around 36 to 37 inches |
Some manufacturers sell exact sleeve lengths, while others use grouped sleeve ranges or alpha sizes such as S, M, L, and XL.
The collar should close comfortably without pressing into your neck. You should generally be able to slide one finger between your neck and the buttoned collar without leaving a large gap.
The shoulder seams should sit close to the edge of your natural shoulders. Seams that fall down the upper arm usually indicate that the shirt is too large, while seams pulled inward may indicate that it is too small.
With your arms relaxed, the cuffs should reach around the wrist bone. The sleeves should allow normal movement without pulling tightly across the elbow or creating excessive fabric around the forearm.
The button placket should lie flat without pulling or gaping. A slim fit removes more fabric through the torso, while classic and relaxed fits provide additional room.
Numeric sizing is normally more precise because it identifies a collar measurement and a sleeve measurement. Alpha sizing combines a wider range of measurements into one size, such as small, medium, large, or extra large.
Tall or long alpha sizes may be used when a shirt needs additional sleeve and body length. For example, a person may receive an approximate result such as Medium Long instead of standard Medium.
Neck circumference and sleeve length are the most important measurements for a numeric dress shirt size. This calculator also asks for height and weight to help produce a more useful overall fit estimate.
The first number is the collar measurement in inches. The second part is the sleeve range, so 15.5 34/35 generally means a 15.5-inch neck with a sleeve designed for measurements around 34 to 35 inches.
Medium describes the approximate overall shirt size, while Long indicates that the shirt generally includes additional body and sleeve length.
Do not round down to a tighter collar. When your measurement falls between available sizes, the larger collar size is generally the safer starting point.
The tape should be comfortably snug, not tight. Leave enough room for one finger between the tape and your neck.
Dress shirts can use different patterns, fit categories, collar construction, sleeve groupings, and alpha-size conversions.
Prioritize a collar that closes comfortably and a sleeve that reaches the wrist correctly. Look for shirts offering separate neck and sleeve combinations, or choose the closest size and consider alterations.
This dress shirt size calculator provides a starting size estimate based on the measurements entered. It cannot account for every garment pattern, posture, shoulder shape, or personal fit preference.