Pocket flap pattern

Create a pocket flap pattern from your measurements

Generate a free printable pocket flap with rounded, straight, or pointed shapes, seam allowances, stitch line, and optional button or buttonhole marks. Match it to a patch pocket or draft it as a standalone detail.

Open flap builder All templates

Flap preview

Generated example

A flap sized from the pocket opening

Pocket compatibility

This rounded example covers a 14 cm pocket with 0.8 cm extension per side, producing a 15.6 cm finished flap plus separate sewing allowances.

Coverage

The flap is wider than the pocket

Side extensions are calculated around the pocket opening instead of guessed after the flap is drawn.

Closure

Shape and fastening stay independent

Rounded, straight, or pointed edges can be combined with no closure, a button, or a buttonhole extension.

Opening the flap tool from a generated patch pocket transfers its width, keeping the two related details traceable.

Generate a pocket flap

Generated rounded pocket flap

Download the flap as tiled A4 PDF, full-size PDF, or editable SVG.

Related guides

New Template

Patch Pocket

Generate a clean patch pocket pattern with rounded, square, or angled bottom shapes.

Generator

Basic dress pattern

Build a connected bodice and skirt draft with waist, darts, length, and hem checks.

Construction

Seam and hem allowances

Read solid seam lines, dashed cutting lines, construction seam allowance, hem allowance, curves, and corners.

Pocket flap pattern guide

Printable pocket flaps matched to pocket width and closure style

The generator converts pocket width, finished flap width, depth, side extension, seam allowances, shape, and closure marks into a full-size pocket flap pattern. Use these notes to keep the flap proportional to the pocket and practical to sew.

Included

Flap outline with seam, stitch and closure guides

The export includes the cut outline, finished flap outline, top seam line, side and bottom seam allowances, optional button or buttonhole mark, labels, and a 5 × 5 cm test square.

Measurements

Pocket width, flap depth, side extension and seam allowances

Pocket width sets the reference size. Flap depth controls coverage, side extension creates overhang beyond the pocket, and seam allowances define how the flap will be sewn and turned.

Shapes

Rounded, straight or pointed lower edge

Rounded flaps soften the design, straight flaps work for clean utility details, and pointed flaps create a sharper closure line. The shape should suit both the pocket and the garment style.

Compatibility

Match the flap to the finished pocket width

When the flap sits over a patch pocket, check it against the finished pocket width after seam allowances are turned. A flap can be the same width, slightly wider, or intentionally narrower depending on the design.

Closure

Plan button or buttonhole marks before stitching

Use the closure mark as a placement guide, not a final hardware decision. Test button size, buttonhole length, fabric thickness, and flap depth on a sample before cutting final fabric.

Printing

A4 tiled PDF, copyshop PDF or SVG

Print at actual size or 100% with scaling disabled and measure the test square first. Use tiled A4 at home, copyshop PDF for a full-size sheet, or SVG for vector editing.

Who, how, and when

Drafting logic by Nastix Design

This generator is maintained as application code: measurements are converted into vector geometry, related seams are measured numerically where the construction requires it, and the same geometry is used for preview, SVG, copyshop PDF, and tiled A4 PDF.

Generator content and output workflow reviewed 13 July 2026. A generated block remains a fitting starting point; verify measurements, print scale, fabric behaviour, and a test garment.

Read the methodology About the project

Common questions

Pocket flap pattern FAQ

Is the pocket flap pattern generator free?

Yes. Enter the flap measurements, preview the generated shape, and download SVG, copyshop PDF, or tiled A4 PDF without purchasing a fixed-size pattern.

Should the flap be wider than the pocket?

Often the flap is the same width as the finished pocket or slightly wider because of side extension. Check the finished pocket width after turn-under allowances, then choose the visual overhang you want.

Which pocket flap shape should I choose?

Use rounded flaps for softer garments, straight flaps for minimal or utility styles, and pointed flaps when you want a more directional closure detail.

Can I generate a flap from a patch pocket?

Yes. The patch pocket workflow can pass the pocket width into this flap generator, then you can adjust depth, side extension, shape, seam allowances, and closure marks before export.

How should I print the A4 pocket flap pattern?

Select actual size or 100%, disable fit-to-page scaling, and measure the 5 × 5 cm test square before cutting the printed flap.

Workflow

Choose shape

Start from rounded, straight, or pointed flap presets.

Match the pocket

Use the pocket width or set the final flap width directly.

Export files

Download SVG, copyshop PDF, or tiled A4 PDF for 100% printing.