Wetsuit Size Converter

Find your wetsuit size by height + weight. For surf, scuba diving, and triathlon. Includes thickness guide for water temperature.

Height + weightSurf/dive/triThickness guideFree

For

Height (cm)

Most critical measurement.

Weight (kg)

For double-check.

Your wetsuit size

💡 Wetsuits should feel tight on land — they relax in water. A "too big" wetsuit lets water flush through and won't keep you warm. Err snug.

Wetsuit thickness by water temperature

Thickness is measured in mm. A "4/3" suit has 4mm torso + 3mm limbs. Match thickness to water temperature, not air temp.

Water temp	Thickness	Style
> 25°C / 77°F	None / lycra	Rash guard only
22–25°C / 72–77°F	1–2mm	Springsuit (short)
18–22°C / 64–72°F	2/2 or 3/2 mm	Full or springsuit
14–18°C / 57–64°F	3/2 or 4/3 mm	Full suit
10–14°C / 50–57°F	4/3 or 5/4 mm	Full + hood/boots
< 10°C / < 50°F	5/4 or 6/5 mm	Hooded + boots/gloves

FAQ

Surf vs scuba vs triathlon wetsuit?

Surf: thicker neoprene, flexible shoulders for paddling. Scuba: thicker (5–7mm), reinforced knee/elbow pads, often back-zip. Triathlon: thinnest (3/2mm), buoyancy panels for flat swim position, low collar for sighting.

How tight should a wetsuit be?

Snug enough that you can BARELY pinch fabric off your back. Loose enough to bend at knees and arms without restriction. If it's loose around the wrists/ankles, water will flush through and chill you.

How long does a wetsuit last?

Surf wetsuits: 1–3 years with regular use (UV breaks down neoprene). Scuba: 5–10 years (used less frequently). Triathlon: replace when neoprene compresses and feels less buoyant.

How do I get into a tight wetsuit?

Put a plastic bag over your foot — slides through the leg hole easily. Same trick for hands going through sleeves. Always inside-out the suit when storing.