Hexagon Quilt Calculator

Your details

Target finished width of the quilt top, before borders or binding.
in
Target finished length (height) of the quilt top.
in
The finished side length of each hexagon, not including seam allowance. Common sizes: 0.5", 0.75", 1", 1.5", 2".
in
Seam allowance added to each edge when cutting fabric pieces. Standard quilting is 1/4 inch.
The usable width of your fabric after removing selvedges. Most quilting cotton is 44-45 inches wide; allow 40-42 inches usable.
in
If you plan to distribute hexagons evenly across multiple fabrics, this divides the yardage per fabric. Increase by 10-15% for each fabric to account for waste.
Extra fabric to account for cutting errors, directional prints, pre-washing shrinkage, and squaring up.
Full hexagons neededHeirloom project
3,317

Total full hexagon pieces needed for the quilt top

Half hexagons needed66
Actual quilt top width86.6
Actual quilt top length101
Cut square size2.5
Fabric per color5.07
Total fabric (all colors)15.2
Columns50
Rows67
Full hexagons3,317
Half hexagons66

3,317 full hexagons across 50 columns and 67 rows.

  • Your actual quilt top will be 86.6 x 101.0 in (50 columns x 67 rows).
  • You need 66 half-hexagons along the sides plus 3317 full hexagons. Cut half-hexagons from the same size square, then trim.
  • With 3 fabrics, buy about 5.07 yd per fabric (15.20 yd total). Round up to the nearest 1/4 yd when ordering.
  • A 10% waste buffer is included. For pre-washed or directional fabrics, consider 15-20%.

Next stepWith 3,317 hexagons, this is a substantial heirloom project. Pre-cutting and basting in batches of 50-100 hexagons per session makes it manageable.

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