# Fabric Metres Calculator for Sewing: Consumption Guide
One of the most frequent questions in the sewing workshop is how much fabric to buy for a specific project. Fabric consumption depends radically on three factors: the garment style, the person's size, and above all, the fabric width (which usually ranges between 90 cm and 150 cm). This technical calculator systematises the calculation so you do not buy too much or run short mid-cut.
# How much fabric do I need for a dress or trousers?
The traditional calculation is based on the garment length plus sleeve length, adding a margin for facings and hems. However, with narrow fabric (90-110 cm), pieces often cannot lie side by side, requiring twice the length. Our tool accounts for these variations automatically according to textile industry standards.
# Estimated Consumption by Fabric Width (size M-L)
- Straight Skirt: 2.00 m in 90 cm fabric · 1.20 m in 140/150 cm fabric.
- Long Trousers: 2.50 m in 90 cm fabric · 1.50 m in 140/150 cm fabric.
- Long-Sleeve Shirt: 2.20 m in 90 cm fabric · 1.40 m in 140/150 cm fabric.
- Basic Dress: 3.50 m in 90 cm fabric · 2.20 m in 140/150 cm fabric.
# Factors that Affect Fabric Consumption
- Print direction (Rapport): If the fabric has a directional print or plaids that must match, you will need 15-20% extra material.
- Bias cut: Circular cuts (like circle skirts) consume significantly more fabric due to waste at the angles.
- Nap direction: In pile fabrics like velvet or corduroy, all pieces must be cut in the same direction, limiting space optimisation.
- Shrinkage: Many natural fibres (cotton, linen, wool) shrink after the first wash. Pre-washing the fabric before cutting is essential.
Sewer's Tip
If you are using a fabric with a large print or plaids, do not rely solely on the standard measurement. Always add one full pattern repeat (the rapport) to the total metres calculated to ensure patterns match at the side seams.
# Advantages and Limitations of this Calculator
- Instant calculation for multiple fabric widths with size adjustment.
- Includes customisable seam allowance estimation.
- Visual guide of pattern piece layout on the cloth.
- Does not replace a real pattern layout (marking). Plus sizes may require additional manual adjustments.