Macrame Cord Length Calculator
The macrame cord length calculator helps you estimate how much cord to buy for any macrame project. The key insight is that knotting consumes significantly more cord than the finished length of the piece suggests. A knot multiplier accounts for this consumption. For typical alternating square knot patterns, each working strand needs to be approximately 4 times the finished project length. Dense patterns use more cord; simple fringe uses less. This calculator takes your finished project dimensions, number of cords, the knot multiplier, and a waste allowance to give you the total cord required in metres and feet.
Macrame cord formula
Working length per strand = Finished length (cm) x Knot multiplier
Cord to cut per piece = Working length x Fold factor (2 if lark's head, 1 if single)
Total cord (cm) = Cord per piece x Number of cords
Total cord (m) = Total cord (cm) / 100
When using a lark's head knot, each cord piece is folded in half to create two working strands, so the piece you cut must be twice the working length.
Frequently asked questions
How much macrame cord do I need per strand?
A common rule of thumb is that each working cord should be 4 times the finished length of the project for simple knotting patterns, or up to 6 to 8 times for dense patterns like the square knot spiral. This calculator uses a knot multiplier to convert finished length to required cord length per strand.
How are macrame cords attached to the dowel?
Cords are most commonly folded in half and attached using a lark's head knot, which doubles each cord immediately. If you fold a 200 cm cord in half and attach it, you have two 100 cm working strands. The calculator accounts for this by letting you specify whether cords are folded (doubled) or single-strand.
What is the difference between single-strand and doubled cords?
When a cord is attached with a lark's head knot, the single cord becomes two working strands. So a single cord of 400 cm gives two 200 cm working strands. Most macrame patterns specify the total length of cord to cut per piece, which will be folded in half at the dowel.
What knot multiplier should I use for different patterns?
For simple alternating square knots: 4x the finished length. For dense square knot sinnets: 6x to 8x. For spiral half-hitch patterns: 4x to 5x. For fringe-heavy pieces: 2x to 3x. These are starting estimates; your first project may need more cord than calculated.
What is the most common macrame cord thickness?
3 mm single-strand or 3-ply twisted cotton cord is the most common all-purpose macrame cord. Thicker cord (5 mm to 9 mm) is used for large-scale wall hangings, plant hangers, and furniture. Thinner cord (1 mm to 2 mm) is used for jewellery and fine decorative pieces.
Sources
- Smithsonian Folklife Center: American Folklife Center - Textile Arts Documentation.
- ASTM International: ASTM D6193 - Standard Practice for Stitches and Seams.
Reviewed by the CalculatorHub team, edited by James Graham, 14 June 2026. See our methodology.