Macrame Cord Length Calculator
Knotting eats cord, so a macrame piece needs cords many times longer than the finished height. The amount depends on the knots and the cord thickness, which is why a single fixed number never works. This calculator takes your finished project length, a multiplier you choose to match your knot density, whether you mount cords folded, and the number of cords, then gives the cut length per cord and the total cord to buy in inches, feet, and yards. Because the multiplier is yours, you can dial it in from a sample swatch rather than guessing and running short.
Macrame cord formula
Working length = finished length * multiplier
Cut length = working length * 2 if folded, else working length
Total cord (in) = cut length * number of cords
Feet = total in / 12, Yards = total in / 36
The multiplier sets how many times the finished length each working end consumes. Folding mounts one cut cord as two working ends, so the cut length doubles.
Macrame planning context
- Knotting consumes far more cord than the finished height, hence the large multiplier.
- The multiplier depends on knot density and cord thickness, so test a sample swatch first.
- Folded mounting gives two working ends per cut cord, doubling the cut length.
- Thicker cord needs a larger multiplier than fine cord for the same design.
- One foot is 12 inches and one yard is 36 inches, per the NIST Office of Weights and Measures.
Macrame cord: frequently asked questions
How long should I cut macrame cord?
A common starting rule is to cut each working cord several times the finished project length, because knotting consumes far more cord than the visible height. The exact multiplier depends on the knot density and cord thickness, so it is a user input. Tighter, denser knotting needs a larger multiplier.
Why fold the cord in half?
Many macrame pieces mount cords folded over a dowel or ring, so each cut length gives two working ends. If you fold, the cut length must be doubled to deliver the working length on each side. The calculator has a fold option that doubles the cut length when you mount cords this way.
What multiplier should I use?
There is no single correct figure because it depends on the knots and the cord, so it is your input. Crafters often start around 4 times the finished length per working end (8 times the cut length when folded) and adjust after a sample. Always test on a small swatch before cutting a full project.
How do I find the total cord to buy?
Multiply the cut length per cord by the number of cords. The calculator reports total cord in inches, feet, and yards so you can match how your cord is sold. Buy a little extra to allow for trimming and the inevitable miscut.
Does cord thickness change the length needed?
Yes. Thicker cord takes up more length per knot, so it needs a larger multiplier than fine cord for the same design. The calculator keeps the multiplier as an input precisely so you can set it to match your cord and knot style rather than relying on a fixed assumption.
Official sources
- NIST: Units of length (inch, foot, yard).
- NIST: Office of Weights and Measures.
Reviewed by the CalculatorHub team, edited by James Graham, 17 June 2026. See our methodology.