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Crochet Rectangles in any Size in Spiral Rounds

The following crochet pattern shows you how you can crochet rectangles of any size easily and uncomplicatedly.

Crocheted rectangles can be used for many things, be it as a base for crocheted bags and baskets or as a base for three-dimensional bodies like cuboids to create arms, legs and other elements for amigurumi.

The ultimate rectangle crochet formula to crochet your own individual sized rectangle can be found after the example below.

This instruction has been crocheted with the “Schachenmayr Catania” yarn with a 2.5 mm crochet hook.

Crochet Rectangles

Needed Techniques

  • Slip Knot
  • Chain Stitch
  • Slip Stitch
  • Single Crochet (sc)

Needed Materials and Tools

  • 2.5 mm Crochet Hook
  • Stitch Marker
  • Scissors
  • Colors: blue
  • This pattern was crocheted using the „Schachenmayr Catania“ yarn (100% Cotton, Meterage: 125 m, Yarn Ball Weight: 50 g, Yarn Weight: Sport – 5ply / Fine (2)) in the following colors:
  • Petrol (391)

All materials used are available on Amazon (Affiliate Link):

Schachenmayr Catania 9801210-00391 petrol Handstrickgarn, Häkelgarn, Petrolblaue Baumwolle
Materialzusammensetzung: 100% Baumwolle; Ökotex 100 Zertifiziert.
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Crochet a Rectangle in Spiral Rounds

The following pattern shows how to crochet a rectangle, starting with 6 chain stitches. A formula on how to crochet individually large or small rectangles can be found below.

Each rectangle starts with crocheting a chain, which is then crocheted around and then crocheted in spiral rounds.

The following example creates the following rectangle:

Use the check boxes to mark your finished rounds, rows and steps.

  • Crochet the rectangle in Petrol in spiral rounds.
  • Round 1: 6 chain stitches, 1 sc into the 2nd stitch from the hook, 3 sc, 3 stitches into the next stitch.

  • Now continue to crochet on the underside of the chain. For this you push with the crochet hook through the loop/s on the underside of the chain and continue crocheting as usual. 3 sc, 1 sc increase (12 stitches).

  • 1 slip stitch into the first stitch of the round. IMPORTANT: Treat this slip stitch as the new end of the round, so the next stitch you crochet is the 1st stitch of the new round in which you place your stitch marker. Because of this shifted end of the round, it is now possible to crochet rectangles of any size following a very simple and clear formula.

  • Round 2: [3 sc, 3 sc into the next stitch, 1 sc, 3 sc into the next stitch] repeat 2 times (18 stitches).

  • Round 3: [4 sc, 3 sc into the next stitch, 3 sc, 3 sc into the next stitch, 1 sc] repeat 2 times (28 stitches).
  • Round 4: [5 sc, 3 sc into the next stitch, 5 sc, 3 sc into the next stitch, 2 sc] repeat 2 times (36 stitches).
  • Round 5: [6 sc, 3 sc into the next stitch, 7 sc, 3 sc into the next stitch, 3 sc] repeat 2 times (44 stitches).

The Ultimate Rectangle Crochet Formula

Each rectangle begins with a chain which must be at least 4 chain stitches long. If you would start with 3 chain stitches you would get a square.

The longer the initial chain, the longer the rectangle becomes. The shorter the chain, the more squarish the rectangle becomes.

To use the rectangle formula, you only have to do the following small calculation and insert the value X into the crochet pattern below whenever an X appears. This value remains the same in all rounds.

Number of initial chain stitches – 3 = X single crochet stitches

Example: You start with 10 chain stitches. From this 3 are subtracted and you get 7. This value now indicates how many single crochet stitches you have to crochet each time when an X appears. In this case 7 single crochet stitches.

8 stitches are added per round. To check if you always have the right number of stitches per round, write down the initial number of stitches from the first round and add 8 stitches per round. This tells you how many stitches should be present in each round.

  • Crochet the rectangle in spiral rounds.
  • Round 1: Number of initial chain stitches, 1 sc into the 2nd stitch from the hook, X sc, 3 sc into the next stitch. Now continue to crochet on the underside of the chain. X sc, 1 sc increase, 1 slip stitch into the 1st stitch of the round. IMPORTANT: The new round starts after the slip stitch.
  • Round 2: [X sc, 3 sc into the next stitch, 1 sc, 3 sc into the next stitch] repeat 2 times.
  • Round 3: [X+1 sc, 3 sc into the next stitch, 3 sc, 3 sc into the next stitch, 1 sc] repeat 2 times.
  • Round 4: [X+2 sc, 3 sc into the next stitch, 5 sc, 3 sc into the next stitch, 2 sc] repeat 2 times.
  • Round 5: [X+3 sc, 3 sc into the next stitch, 7 sc, 3 sc into the next stitch, 3 sc] repeat 2 times.
  • Round 6: [X+4 sc, 3 sc into the next stitch, 9 sc, 3 sc into the next stitch, 4 sc] repeat 2 times.
  • Round 7: [X+5 sc, 3 sc into the next stitch, 11 sc, 3 sc into the next stitch, 5 sc] repeat 2 times.
  • Round 8: [X+6 sc, 3 sc into the next stitch, 13 sc, 3 sc into the next stitch, 6 sc] repeat 2 times.
  • Round 9: [X+7 sc, 3 sc into the next stitch, 15 sc, 3 sc into the next stitch, 7 sc] repeat 2 times.
  • Round 10: [X+8 sc, 3 sc into the next stitch, 17 sc, 3 sc into the next stitch, 8 sc] repeat 2 times.
  • Round 11: [X+9 sc, 3 sc into the next stitch, 19 sc, 3 sc into the next stitch, 9 sc] repeat 2 times.
  • Round 12: [X+10 sc, 3 sc into the next stitch, 21 sc, 3 sc into the next stitch, 10 sc] repeat 2 times.
  • Round 13: [X+11 sc, 3 sc into the next stitch, 23 sc, 3 sc into the next stitch, 11 sc] repeat 2 times.
  • Round 14: [X+12 sc, 3 sc into the next stitch, 25 sc, 3 sc into the next stitch, 12 sc] repeat 2 times.
  • Round 15: [X+13 sc, 3 sc into the next stitch, 27 sc, 3 sc into the next stitch, 13 sc] repeat 2 times.
  • Round 16: [X+14 sc, 3 sc into the next stitch, 29 sc, 3 sc into the next stitch, 14 sc] repeat 2 times.
  • Round 17: [X+15 sc, 3 sc into the next stitch, 31 sc, 3 sc into the next stitch, 15 sc] repeat 2 times.
  • Round 18: [X+16 sc, 3 sc into the next stitch, 33 sc, 3 sc into the next stitch, 16 sc] repeat 2 times.
  • Round 19: [X+17 sc, 3 sc into the next stitch, 35 sc, 3 sc into the next stitch, 17 sc] repeat 2 times.
  • Round 20: [X+18 sc, 3 sc into the next stitch, 37 sc, 3 sc into the next stitch, 18 sc] repeat 2 times.
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