Jacob’s Ladder Block Pattern

The Jacob’s Ladder Block Pattern is one of those timeless quilt blocks that never goes out of style. With its bold diagonal movement and strong contrast between light and dark fabrics, this block creates a striking visual effect that looks intricate but is surprisingly beginner-friendly. If you love classic quilt designs with vintage appeal, this block is a must-try.

Traditionally associated with antique quilts, the Jacob’s Ladder block has been passed down through generations. Its geometric layout creates a beautiful “stepping” illusion when blocks are placed together, making it perfect for everything from table toppers to full-size quilts. Whether you prefer traditional color combinations or modern palettes, this pattern adapts beautifully to your fabric choices.

Today, I’m sharing how to make a 12 ½” x 12 ½” unfinished Jacob’s Ladder quilt block, and at the end of this article, you’ll be able to download the free PDF pattern.

Finished Block Size

Unfinished size: 12 ½” x 12 ½”

Sew using a ¼” seam allowance throughout.

Cutting Instructions (One Block)

From Print Fabric (A):

2 – 4 ⅞” squares

2 – 2 ½” x 15” rectangles

From Background Fabric (C/D):

2 – 4 ⅞” squares
2 – 2 ½” x 15” rectangles

(Measurements adapted from the original PDF instructions)

Step 1: Make the Half Square Triangle (HST) Units

Draw a diagonal line on the wrong side of each 4 ⅞” background square.
Place one background square right sides together with one print square.
Stitch ¼” away from both sides of the drawn line.
Cut apart directly on the drawn line.
Press open.

You will have 4 Half Square Triangle units, each measuring 4 ½” x 4 ½”.

(Construction details referenced from page 2 of the PDF)

Step 2: Make the Strip Sets

Sew one 2 ½” x 15” print rectangle to one 2 ½” x 15” background rectangle.
Press seam as desired.
The strip set should measure 4 ½” x 15”.
Make two strip sets total.
Subcut each strip set into five 2 ½” x 4 ½” rectangles.

Each small unit should measure 2 ½” x 4 ½”.

(Measurements and assembly from page 1)

Step 3: Create the Four Patch Units

Sew two of the 2 ½” x 4 ½” units together.
Press seam.
Repeat to create four patch units measuring 4 ½” x 4 ½”.

Make a total of five Four Patch units.

(Assembly instructions from page 1)

Step 4: Assemble the Jacob’s Ladder Block

Arrange your units in a 3 x 3 layout:

Position the Half Square Triangle units so the diagonals create the “ladder” effect.
Alternate with the Four Patch units to form the stepping pattern.
Sew rows together.
Join rows to complete the block.

Your finished block should measure 12 ½” x 12 ½” unfinished.

(Assembly diagram referenced from page 2)

Fabric & Color Ideas

This block shines with high contrast combinations. Some beautiful ideas include:

Navy and cream for a classic vintage look
Red and white for a farmhouse feel
Pink tones for a romantic, modern twist
Black and mustard for bold contemporary quilts

When multiple Jacob’s Ladder blocks are sewn together, the diagonal lines create a dynamic secondary pattern across the entire quilt top.

Quilt Size Ideas

The Jacob’s Ladder block can be used for:

Table toppers
Lap quilts
Twin size quilts
Queen size quilts

Simply repeat the 12 ½” block to reach your desired quilt dimensions.

✨ Download the Free Jacob’s Ladder Block PDF Pattern below and start sewing today!

FREE PDF PATTERN

The Jacob’s Ladder Block Pattern is a perfect blend of simplicity and visual impact. Even though it’s made from basic units like Half Square Triangles and Four Patches, the finished result looks beautifully complex. It’s a fantastic block for beginners who want to build confidence and for experienced quilters who enjoy classic designs.

Happy quilting!