Latex size calculator: what should your garment be cut to?

There is no universal latex size chart, because latex has no sizing standard. What a maker actually needs is the finished measurement for each part. Enter your numbers below and this tool applies the reduction for your sheeting thickness, then writes the measurement sheet for you.

Your measurements

Body measurements (cm)

Widest point
Optional for tops and dresses
Narrowest point
Widest point
Upper thigh, widest
Relaxed arm, widest
Base of the neck
Side of neck to crotch

How the calculation works

Every part is reduced by a percentage that depends on the thickness of the latex: the stiffer the sheet, the less the pattern can be cut down, or the garment becomes impossible to pull on.

ThicknessReduction appliedWhat it means
0.25 mm -14% to -17% Stretches furthest, handles best
0.40 mm -12% to -15% Standard catsuit weight
0.60 mm -10% to -13% Heavier feel, less give
0.80 mm -8% to -11% Close to body size, very little stretch

Thighs and upper arms take a slightly larger reduction than the torso, the neck takes less, and torso length is treated separately — length reduction is far smaller than girth reduction.

Reading your result

Each row gives a range, not a single number, because a garment that is tighter to get into also looks better once it is on. Beginners should work at the looser end of the range; experienced wearers can go tighter. Either way, send the sheet as it is — your maker can move within the range and will normally confirm before cutting.

If any part needs more than about 17% reduction, the tool flags it. At that point the garment stops being practical to put on without help and the seams come under real stress, so it is worth choosing a thinner sheet or adding a zipper instead.

Frequently asked questions

What is negative ease in latex clothing?

Negative ease is the amount by which a pattern is cut smaller than the body it is meant for. Latex clothing needs negative ease because the material has no structure of its own: it only looks skin-tight while it is being stretched. At 0.40 mm the usual figure is 12–15%.

What measurements does a latex maker need?

Nine: chest, underbust, waist, hip, thigh, upper arm, neck, torso length (side of neck to crotch) and optionally your height for sleeve and leg length. If you only measure one thing properly, make it the torso length — a suit that is too short at the torso cannot be fixed.

How do I measure torso length for a latex catsuit?

Stand straight with a soft tape at the side of your neck, level with the top of the shoulder. Let the tape fall straight down your front, past the bust, to the point between your legs where a catsuit seam would sit. Do not follow the curve of your body — the tape must stay vertical.

Why is the suggested finished size smaller than my measurements?

Because the garment has to stretch. If it were cut to your exact measurements it would wrinkle and slide. The calculator applies the reduction for your thickness and fit preference, then shows you both numbers so your maker can check the logic.

Should I size up if I am between two sizes?

No — size down. Latex is engineered to stretch, so the smaller size simply pulls into place, while the larger one stays loose, creases and slips at the shoulders and knees.

Is this calculator accurate?

It uses workshop reduction figures rather than an industry standard, because latex has no sizing standard. Treat the output as a well-founded starting point, and confirm the final numbers with whoever is making your garment.