Body Measurements for Sewing Patterns: Which to Take and How

The basic measurements for a base pattern are bust or chest circumference, waist circumference, hip circumference, front and back waist length, back width, neck circumference, sleeve length and arm circumference for the upper body, plus crotch depth, thigh circumference, waist-to-knee height and waist-to-ankle height for pants and long garments. That set is enough to draft any base pattern for women, men or kids; in women's patternmaking you also add bust and waist darts, which the male body does not need.

Modeltex production guide. Updated on Sep 7, 2026.

The basic measurements for drafting a sewing pattern

A base pattern is built from a limited group of measurements, taken in centimeters on the real body or on the reference size. For the upper body (t-shirts, shirts, blazers, dresses):

Bust or chest circumference: tape around the torso at the fullest point of the bust.
Waist circumference: at the narrowest point of the torso, without pulling tight.
Hip circumference: at the widest point of the hips and seat, usually 18 to 20 cm below the waist.
Front waist length: from the shoulder to the waist, passing over the bust point.
Back waist length: from the base of the neck to the waist, down the center of the back.
Back width: from armhole to armhole, at mid height.
Neck circumference: at the base, where the collar or neckline seam goes.
Sleeve length: from the shoulder to the wrist, with the arm slightly bent.
Arm circumference: at the widest part, near the armpit.

Measurements for pants and long garments

For pants, long skirts or any garment that falls below the waist, you add measurements of the lower body, which vary the most between people with the same hip circumference:

Crotch depth (body rise): seated on a firm chair, from the waist to the seat; it defines the front and back rise.
Thigh circumference: at the widest part, near the crotch.
Waist-to-knee height: from the waist to the knee, for fitted pants.
Waist-to-ankle height: from the waist to the ankle, to calculate lengths without relying on height alone.
Ankle circumference: when the hem closes tight, as on joggers or skinny pants.

Measuring for women's patternmaking: where it changes and why

Taking measurements for women's patternmaking uses the same points as for men's (bust, waist, hip) but demands more precision, because the female body has a bigger difference between those three circumferences. At the bust, the tape runs exactly over the fullest point of the chest: a few centimeters too high or too low shift the front waist length and the bust dart of the pattern. At the waist, the point is found by bending the body slightly to one side, where the crease forms, which does not always match where the person wears their pants. At the hip, it helps to record how far below the waist the maximum circumference was taken: it defines where the hip dart opens in women's skirts and pants.

The reason is geometric: on a man, bust and waist differ by only a few centimeters, and a flat pattern with little or no dart already fits. On a woman that difference is usually larger and there is one specific volume, the bust, that a flat pattern without a dart cannot cover without leaving extra fabric at the waist or pulling across the chest. The bust dart moves that excess into a hidden seam, and the waist dart takes in what is left over toward the hip.

How to take measurements correctly

Tools and posture: a flexible sewing tape measure, in centimeters, never a rigid or stretchy one; for vertical lengths, a wall with a ruler or a square helps. The person stands straight, weight evenly on both feet, arms relaxed; for the crotch depth, seated on a firm chair. Measure over thin, close-fitting clothing, never over a sweatshirt or jacket, because the bulk of the clothes adds to the real measurement.

The most common mistake is pulling the tape too tight, especially at the waist and hip, so the garment "fits closer": the result is a small pattern that then does not close. The tape rests on the body without sinking into the skin or leaving slack, parallel to the floor on horizontal circumferences. Other typical mistakes: bad posture, taking the waist where the person thinks it is, and not repeating the measurement: take it twice and average the two if they differ.

Measurements are individual: the size chart is the starting point

A measurement chart by size (S, M, L or the numbers of an industrial size range) is an average designed to cover as many people as possible within a size, not anyone's exact measurement. Two people in the same size L can have almost the same bust and still differ by several centimeters in hip or waist length.

That is why, for a pattern produced in a size range, the chart is the right starting point: it is used to grade from the middle size and fit a broad audience. But when the goal is a made-to-measure pattern for a real person (special size, one-off order, a body outside the standard range), measuring that person is not optional: no chart replaces the real measurement, and forcing someone into a size that does not fit them is the most common cause of patterns that then have to be corrected at the fitting.

What to do with the measurements once you have them

With the complete set of measurements you draft the base pattern by hand, using the formulas and ease allowances of each method, or you enter it into a CAD system that generates the draft from that data. In both cases the pattern is then adjusted with a fitting on the body or on a dress form with those measurements.

When you need your own pattern already graded for production, without going through manual drafting or validating the size range, Modeltex offers custom patternmaking from the client's measurement chart: those measurements are taken and the pattern is developed with the matching size range, approved with a sewn sample, in whatever format you need.

Frequently asked questions

What are the basic measurements for a sewing pattern?

Bust or chest circumference, waist circumference, hip circumference, front and back waist length, back width, neck circumference, sleeve length and arm circumference for the upper body; crotch depth (body rise), thigh circumference, waist-to-knee height and waist-to-ankle height for pants and long garments. That group is enough to draft the base pattern of most garments, by hand or in a CAD system.

How do you take measurements for women's patternmaking?

With the same points as in men's patternmaking (bust, waist, hip) but with more precision, because the difference between those three circumferences is usually larger: the bust is measured at its fullest point, the waist at the real narrowest point and the hip at its maximum. That difference is what makes bust and waist darts necessary, which a men's pattern usually does not have.

What do you use to take measurements for a sewing pattern?

A flexible sewing tape measure, in centimeters, never a rigid tape. For vertical lengths it helps to lean against a wall with a ruler or a square. The person is measured standing straight and relaxed, or seated on a firm chair for the crotch depth, and preferably over thin clothing, not over a sweatshirt or jacket.

Why does the pattern come out too small if I pull the tape tight?

Because pulling the tape tighter so the garment "fits closer" removes real centimeters of circumference, and it is the most frequent measuring error. The resulting pattern fits barely or does not close at all at the fitting: the tape should rest on the body without sinking into the skin or leaving slack.

Can I use a size chart instead of measuring the person?

It works as an approximate starting point for producing in a size range, but it does not replace the real measurement when the pattern is made to measure for one specific person. Two people in the same size can differ by several centimeters in hip or waist length, so a made-to-measure pattern always starts from the real body.

Which measurements change the most between women's and men's patternmaking?

The relationship between bust and waist, and between waist and hip: on the female body that difference is usually larger, which is why women's patterns include bust and waist darts that men's patterns usually do not. The rest is measured with the same logic in both cases.

More guides

Sewing patterns ready for production, with the full size range, in the Modeltex catalog.