Blazer Fabric Person Size cm

Estimating Fabric for a Suit Jacket

From two measurements, chest circumference and jacket length, this tool estimates how much fabric you'll need to cut and sew a tailored jacket (a blazer or suit coat). The rule of thumb it leans on is fabric (cm) = ceil(length × 2.6 + chest × 0.35). Why 2.6 on the length? A jacket is built from several long panels (two fronts, the back, two sleeves, the facings) and each of those runs the full length of the garment. The chest figure tacks on extra width for the broader torso pieces.

You get back one linear measurement in centimetres, based on standard apparel fabric around 140–150 cm wide. Round up and grab a bit extra anyway. That margin covers hems, seam allowances, lining up the pattern on striped or checked cloth, and the shrinkage that shows up after the first wash or press.

Applications

Tailors, dressmakers and home sewers use it to price a bespoke jacket. Students picking up garment costing lean on it too, as does anyone shopping for cloth before the pattern is even drafted. You get a ballpark figure fast, which makes it easy to compare prices per metre before you commit.

FAQ

Does this include lining? No. The number is for the outer shell fabric and nothing else. Work out lining, interfacing and pocket bags on their own; the lining alone usually adds another 1–1.5 m.

What fabric width does it assume? A typical apparel width, somewhere around 140–150 cm. Working with narrow 90 cm cloth? You'll need proportionally more length, so bump it up by roughly 30–50%.

Why round up? Cutting always burns some fabric on the cross-grain and around the curves. The ceil rounding, plus a margin you add by hand, keeps you from running out halfway through.