Fabric Calculator

Estimate sewing yardage from project type, size bracket, fabric width, and a buying allowance.

Project type

Size bracket Fabric width

Extra allowance (%)

Buying note

The allowance is where you account for shrinkage, layout inefficiency, directional prints, or cautious extra buying.

If you already have a commercial pattern, treat the envelope chart as the final authority and use this calculator as a quick cross-check.

Recommended purchase

3.5 yd

Planning estimate for a dress or tunic in the adult xs-m range using 60 in fabric.

Metres: 3.2 m
Cut length: 126 in
Base yardage: 3 yd
Added allowance: 0.5 yd

Fabric width effect

Dress layouts usually gain the most from 54-60 inch fabric because skirt and bodice pieces stack more efficiently.

Planning only

Long sleeves, full skirts, lining, and nap-sensitive fabrics often need more than a generic dress estimate.

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Sewing Planning

Estimate sewing yardage from project type, size, and width

A fabric calculator estimates how much fabric to buy for common garment projects by combining a project type, a broad size bracket, the fabric width, and an allowance for shrinkage or layout inefficiency. It is a buying guide, not a replacement for a commercial pattern envelope.

About this calculator

Reviewed 2026-03-20

Methodology

The calculator uses width-aware yardage tables for common garment categories and broad size brackets, then adds a user-selected buying allowance and rounds the purchase amount to quarter-yard increments.

Limitations

Pattern-piece shapes, lining, nap, stripes, plaids, and heavy shrinkage can all make the real yardage differ from a generic planning table.
The calculator is not a drafting tool and does not replace the exact yardage chart on a pattern envelope.

Disclaimer

Use this estimate for fabric shopping and early project planning only. Confirm the final amount from your pattern layout before cutting or ordering expensive fabric.

Sources

Seamwork guide to sewing-pattern yardage charts — Explains how home sewing patterns use 45-inch and 60-inch yardage charts.
Seamwork guide to matching plaids, stripes, and large prints — Explains why directional fabrics and pattern matching often require extra yardage.
Sailrite fabric calculator overview — Reference on how fabric width, quantity, and layout affect required yardage.

See our calculation methodology and editorial standards for how this estimate is produced.

Why fabric width changes the result

Sewing patterns usually quote different yardage for 45-inch and 60-inch fabric because wider cloth lets more pieces fit across the width before you add another full length. That can reduce the total yardage you need, especially for dresses, trousers, and larger sizes where pattern pieces are longer or wider.

This calculator turns that idea into a quick planning table. It uses broad garment categories and size brackets, then rounds the final purchase amount up after adding a simple extra allowance. That makes it useful for early shopping decisions even when you do not yet have a detailed cutting layout in front of you.

When you should buy more than the estimate

Directional prints, stripes, plaids, heavy shrinkage, and careful pattern matching all increase real yardage needs. Tailored garments can also move away from a generic estimate when they add facings, collars, pockets, cuffs, lining, or extra fullness.

That is why the result should be treated as a planning number rather than a final cutting authority. If you already have a pattern envelope, the envelope chart should beat a general estimator because it reflects the exact pieces and views in that garment.

Frequently asked questions

Why do 45-inch and 60-inch fabric widths use different yardage?

Wider fabric can fit more pattern pieces side by side, which often reduces the total length you need to buy. Narrower fabric usually needs additional lengths, especially for bigger sizes and longer garments.

How much extra fabric should I buy for directional prints or shrinkage?

Many sewists add a modest buffer such as 10% for cautious buying, then add more when working with plaids, stripes, nap, or fabrics that shrink a lot. The right buffer depends on the project and the fabric behavior.

Can this calculator replace my pattern envelope?

No. Use it as a planning shortcut. A commercial pattern envelope or designer yardage chart is still the better source when you already know the exact garment, view, and fabric.

Fabric Calculator

3.5 yd

Estimate sewing yardage from project type, size, and width

Why fabric width changes the result

When you should buy more than the estimate

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