Wetsuit Size Guide for Surf & Dive

A wetsuit that fits correctly is the difference between a great session and a miserable one. Unlike regular clothing, wetsuits are designed to fit tightly so they trap a thin layer of water against your skin that your body heats for insulation. Whether you surf, dive, or paddleboard, getting the right size means checking your height, weight, chest, and sometimes waist measurements against the brand's size chart. Use the Wetsuit Size Converter to match your measurements to the right size across multiple brands.

Surf Wetsuit Sizing vs Dive Wetsuit Sizing

Surf wetsuits prioritize mobility in the shoulders and arms for paddling, while dive wetsuits prioritize torso insulation and wrist and ankle seals to prevent water exchange at depth. Surf suits are often made with lighter, more flexible neoprene (3/2 mm or 4/3 mm) and fit more snugly. Dive suits use thicker neoprene (5 mm to 7 mm) and may fit slightly looser to accommodate undergarments. Always check the intended activity when consulting the size chart.

How to Measure for a Wetsuit

Measure your height without shoes, your weight, and your chest circumference at the widest point. Some brands also require your waist at the narrowest point, hips at the widest, and inseam from crotch to ankle. Write down each measurement in both inches and centimeters before shopping. The Wetsuit Size Converter takes these inputs and tells you exactly which size to order for major wetsuit brands.

Thickness and Water Temperature

Wetsuit thickness is measured in millimeters and typically written as a pair like 3/2 or 5/4, where the first number is the torso thickness and the second is the arm and leg thickness. A 3/2 mm suit works for water temperatures from 55 to 65°F (12 to 18°C), a 4/3 mm suit for 48 to 58°F (9 to 14°C), and a 5/4 mm suit for 40 to 50°F (4 to 10°C). Your size stays the same regardless of thickness, but thicker suits feel tighter because the neoprene is less flexible.