Simple Square Crochet Coaster Pattern for Beginners

This square crochet coaster pattern protects your coffee table while you learn a new skill, the ultimate win-win project. It uses basic single crochet stitches to help you practice clean edges and consistent stitch tension. Grab a leftover ball of cotton yarn, and let us make a set of handmade coasters in under an hour!

Materials Needed

• Yarn: 100% Cotton yarn in Worsted weight (Weight 4, approx. 15 to 20 yards per coaster)
• Crochet Hook: 4.0 mm (US G-6) crochet hook
• Notions: Yarn needle, scissors, and a ruler or tape measure

Abbreviations (US Crochet Terms)

• ch: chain
• sc: single crochet
• st(s): stitch(es)

Gauge & Finished Size

• Gauge: 16 sc and 18 rows = 4 inches (10 cm) square.
• Finished Size: Approximately 4 inches by 4 inches (10 cm x 10 cm).

Square Crochet Coaster Pattern: Step-by-Step Instructions

Foundation Chain

• Foundation Chain: Ch 16.
  • Tip: Keep your starting chain loose so the bottom edge does not pull inward.

Main Coaster Body

• Row 1: Work 1 sc in the second ch from your hook. Work 1 sc in each remaining ch across. Turn your work. (15 sts)
• Row 2: Ch 1 (does not count as a stitch here or throughout). Work 1 sc in the very first st, making sure to insert your hook under both top loops. Work 1 sc in each st across the row. Turn your work. (15 sts)
• Rows 3 to 16: Repeat Row 2 until your piece forms a square (16 total rows). Turn your work at the end of Row 16. (15 sts)

Simple Border Finish

Do not cut the yarn. We will work a simple single crochet border around all four sides to give the coaster clean, straight edges.

1. Top Edge: Ch 1. Work 1 sc in each of the 15 sts across the top edge.
2. Corner 1: Work [1 sc, ch 1, 1 sc] into the corner stitch to turn smoothly.
3. First Side Edge: Work 15 sc evenly down the side edge (place 1 sc into the end of each row).
4. Corner 2: Work [1 sc, ch 1, 1 sc] into the bottom corner stitch.
5. Bottom Edge: Work 15 sc across the foundation chain loops.
6. Corner 3: Work [1 sc, ch 1, 1 sc] into the bottom corner stitch.
7. Second Side Edge: Work 15 sc evenly up the remaining side edge.
8. Corner 4: Work [1 sc, ch 1] into the final corner stitch, then sl st into the very first border sc to join.

Finishing Off

• Cut your yarn, leaving a 5-inch tail. Pull the tail through the remaining loop on your hook to secure the knot.
• Thread the yarn tail onto your yarn needle and weave it through the back loops of the border stitches. Cut the excess yarn.
• Repeat for the starting foundation tail.

Practical Tips for Beginners

1. Always Use 100% Cotton Yarn: Cotton yarn absorbs heat and moisture efficiently from hot coffee mugs or cold icy drinks, whereas acrylic yarn can melt under hot mugs or slide around easily.
2. Count Your Stitches Every Row: Keep your count at exactly 15 stitches per row. Losing the final stitch at the end of a row is the main reason square patterns turn into triangles.
3. Wet Block for Perfect Corners: If your coaster looks slightly wavy or uneven, spray it lightly with water, pin the corners onto a flat board into a perfect 4-inch square, and let it dry completely.
4. Practice Uniform Tension: Try not to pull your yarn too tightly when making the border stitches along the sides, as this can cause the coaster edges to curl upward.

Making functional items for your home is one of the most rewarding parts of learning to crochet. This square crochet coaster pattern is perfect for practicing clean edges and consistent tension. Once you master this square crochet coaster pattern, explore more free patterns on the homepage, and check yarn standards at the Craft Yarn Council. Enjoy your new handmade coasters!