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Flying geese calculator

Get starting squares, separate fabric quantities and trim sizes for standard 2:1 flying geese.

Your measurements

Measurements in inches. Decimals and fractions work: 12.5 or 12 1/2.

The standard finished width is twice this height.

Whole units; four-at-a-time batches may leave spares.

The recipes use different starting-square additions. Keep the chosen recipe through the whole batch.

Fabric & allowances

Measure between the selvages; do not include them.

Your shop may sell different increments.

Starting settings: 42 in usable width; fixed 1/4 in seams; round up to 1/8 yard.

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Your cutting plan

Ready when you are

Measure your fabric.
We'll work out the plan.

Enter your dimensions, then select Calculate.
Or use the example to see a plan take shape.

Sew a test batch. Keep a quarter-inch above the centered goose point when trimming the final unit.

Convert a known length

A measurement reference, separate from your cutting plan. It converts length only; fabric width is not needed.

Decimals or explicit fractions, such as 1 1/2.

Conversion needs JavaScript.

One large square and four small ones

Flying geese calculator

  1. Select a named four-at-a-time convention. One batch uses one large goose square and four small sky squares; the two recipes use different additions.
  2. Place two small squares on opposite corners of the large square, mark their shared diagonal, sew a quarter-inch on each side, cut and press. Add a small square to each remaining corner, repeat the diagonal operation, and press four geese.
  3. Trim each final unit to the stated unfinished rectangle, with the centered point a quarter-inch below its top raw edge. Check an actual test batch before cutting the full quantity.

A few things to check

Which finished shapes are supported?

Standard flying geese with a width twice their height. Enter the finished height; the width is derived. Other ratios and stitch-and-flip are outside this tool.

What does trim-friendly mean here?

It is the named convention with a large square equal to finished width plus 1 1/2 inches and small squares equal to finished height plus 1 1/8 inches. It is distinct from the traditional additions.

Why did five requested geese produce eight?

Each batch makes four. Five units need two whole batches, leaving three spares. The cut and purchase quantities include the complete batches.

Can directional prints stay upright?

Four-at-a-time construction can change print direction between units. Test the layout with the actual fabric before committing.

Has a physical test batch been sewn for this tool?

No. Source and arithmetic review do not establish a sewn result. Check trim coverage and point placement with your own test batch.