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THE SEWING WORKTABLE / 01

The right amountfor a beautiful drape.

Turn your rail and drop measurements into whole fabric widths and a clear buying length.

Plan your fabricLocal calculations · no account
FREE FABRIC PLANNERS

Your cutting worktable

Change a measurement to update your material list.

01 / YOUR MEASUREMENTS

iEach drop reserves side allowance on both edges, including joins. Split or trim the finished curtain panels in your sewing plan.

02 / CUTTING PLAN
Fabric to buy

7.35m

8.038 yd · Allowances are included. Shrinkage and pattern matching are not.
Cut pieces
3
Each cut
140 cm × 245 cm
Usable width per drop
136 cm
Finished flat width
408 cm

Each drop reserves side allowance on both edges, including joins. Split or trim the finished curtain panels in your sewing plan.

Dimensions at a glance↕
Curtains: Fabric width 140 cm; Each cut 140 cm × 245 cmFabric width 140 cm3 full dropsCut length 245 cmEach cut: 140 cm × 245 cm

Schematic only — not a full-scale sewing pattern.

Curtain fabric calculator

Curtain rail width
180 cm
Finished drop
220 cm
Usable fabric width
140 cm
Fullness multiplier
2
Side allowance, each edge
2 cm
Top allowance
10 cm
Bottom allowance
15 cm

A clean material list is prepared when you print.

Side allowance is conservatively applied to every edge, including joining edges. This estimates the total cloth for the entire rail; it does not divide drops into left and right panels or calculate heading tape, lining, hardware or pattern matching.

YOUR MEASURING NOTES

How to use

  1. 01

    Measure the rail width and the finished curtain drop, rather than the size of the window glass.

  2. 02

    Choose fullness, usable fabric width and allowances. Side allowance is reserved on each edge of every full-width drop.

  3. 03

    Read the whole-drop count and total fabric length. Add shrinkage and pattern-repeat allowance separately before shopping.

The calculation

Usable width = fabric width − 2 × side allowance. Drops = round up (rail width × fullness ÷ usable width). Cut length = finished drop + top + bottom allowances. Total fabric = drops × cut length.

Worked example

A 180 cm rail with 2× fullness needs 360 cm of flat curtain width. With 140 cm fabric and 2 cm per side, each drop contributes 136 cm; round 360 ÷ 136 up to 3 drops. A 220 cm drop plus 10 cm top and 15 cm bottom needs 245 cm per drop: 7.35 m total.

Before you buy

Side allowance is conservatively applied to every edge, including joining edges. This estimates the total cloth for the entire rail; it does not divide drops into left and right panels or calculate heading tape, lining, hardware or pattern matching.