Running out of cord halfway through a macramé project means awkward joins; cutting far too much wastes expensive cord. This calculator estimates the cut length of each cord and the total for the project.
The rule of thumb
Knotting uses up cord. A common guideline is that each working strand needs about 4 times the finished length, more for dense knotting and less for open designs with lots of bare cord:
- 3.5 times for open, airy patterns;
- 4 times for a typical mix of knots;
- 6 times for dense square knots or spirals all the way down.
Most projects start with cords folded in half over a dowel or ring with a lark’s head knot, so each cut cord makes two working strands:
cut length = 2 × (finished length × factor + fringe)
For a 36 in wall hanging at 4 times with a 6 in fringe: 2 × (36 × 4 + 6) = 300 in, or 8⅓ yd per cord. Twelve cords need 3,600 in, or 100 yd.
When to add more
- Spirals and half-hitch patterns consume cord quickly; the cords doing the knotting run out first.
- In square knots, the outer cords tie and the center cords just carry, so the outer ones need far more length. Some makers cut outer cords longer or swap them partway.
- Thick cord (5 mm and up) uses more length per knot than thin cord.
- A first project or a new pattern deserves 10 to 20% extra.
Leftover lengths are useful for small projects like keychains or plant hanger accents.
Cord types
- Single-strand twisted cotton unravels into soft fringe and is popular for wall hangings.
- 3-ply rope is sturdy and gives defined knots.
- Braided cord is smooth and strong, good for plant hangers and bags, but does not fringe.
Cord diameter sets the scale: 3 to 5 mm suits most wall hangings and plant hangers.
Planning tips
Make a small sample with your cord and knots, measure how much length a 2 in section uses, and adjust the factor. Hang the dowel at eye level while you work, and keep long cords wound in butterfly bundles to prevent tangles.