Quilt block diagram

Four-patch quilt block

Four equal squares alternate two fabrics for a simple block that also works as a repeatable layout unit.

Block structure

How the geometry is organized

A 2 × 2 grid of equal squares with opposite corners matching.

  1. 1Divide the finished block into two equal units across and down.
  2. 2Pair contrasting squares into two rows.
  3. 3Rotate the second row so matching colors meet only at the center point.
Repeat this block

Finished-size planning

Basic unit sizes

These values divide the finished block evenly for drawing and layout. They do not include seam allowance or method-specific trimming.

6 in block3 in unit
8 in block4 in unit
9 in block4.50 in unit
10 in block5 in unit
12 in block6 in unit