Macrame cord calculator
Pick a project preset or enter custom dimensions. This macrame square knot calculator (and spiral / half-hitch / lark's head calculator) uses the community-standard knot multipliers, documented below — these are honest estimates, not lab precision.
- Knot multiplier used
- –
- Cords × cut length
- –
- Spool recommendation
- –
- Waste (excess cord)
- –
- Approx. weight (cotton)
- –
Macrame cord length by project — quick reference
Typical cut lengths at default settings. Change any number in the calculator above for your exact piece.
| Project | Cut per cord | Why this number |
|---|---|---|
| Macrame wall hanging cord length | 264 cm | 60 cm drop × 4× square knot × 4 mm |
| Macrame plant hanger cord length | 440 cm | 100 cm drop × 4× square knot × 4 mm (≈ 42 yd total) |
| Macrame bracelet cord length | 80 cm | 20 cm finished × 4× square knot × 3 mm |
| Macrame keychain cord length | 48 cm | 12 cm finished × 4× square knot × 3 mm |
| Macrame bag cord length | 264 cm | 40 cm body × 6× spiral knot × 4 mm |
| Macrame curtain cord length | 720 cm | 150 cm drop × 4× square knot × 5 mm |
| Macrame table runner cord length | 792 cm | 180 cm runner × 4× square knot × 4 mm |
| Dreamcatcher wrap | 100 cm | 25 cm finished × 4× square knot × 3 mm |
How many cords fit my dowel or rod?
Quick helper: cords are usually spaced about twice the cord diameter apart on a dowel, branch or curtain rod.
Macrame cord thickness guide
Wondering what size cord for macrame projects like yours? This guide matches 3 mm, 4 mm and 5 mm cord to each project type. Thicker cord looks chunkier, knots faster, and uses slightly more length per knot.
| Project | Recommended | Why |
|---|---|---|
| Bracelets, anklets | 2–3 mm | Delicate scale; sits comfortably on skin |
| Keychains, earrings | 3 mm | Fine detail without bulk |
| Dreamcatchers | 3 mm | Wraps the hoop neatly |
| Plant hangers | 4–5 mm | Must hold real weight — 5 mm for heavy pots |
| Wall hangings | 4 mm | The all-round standard; 5 mm for statement pieces |
| Table runners | 4 mm | Drapes well, knots stay flat |
| Bags, market totes | 4–5 mm | Strength for daily use |
| Curtains | 5 mm | Covers width fast; holds its shape hanging |
| Hanging chairs | 5–6 mm | Load-bearing — never go thinner |
Knot cord-consumption database
Macrame knot cord usage for every common knot: how much cord each knot type “eats” relative to the finished length. The multiplier is applied per working cord.
| Knot | Multiplier | What it means | Typical use |
|---|---|---|---|
| Lark's head | 2× | Mounting knot — cord is folded over the dowel, almost no knotting | Attaching cords to dowels, rings, handles |
| Square knot | 4× | The classic 4× rule: 10 cm of finished sinnet needs ~40 cm per cord | Wall hangings, plant hangers, bracelets — the default |
| Spiral knot | 6× | Half-knot twists consume more than square knots | Plant-hanger spirals, decorative twists, bag straps |
| Berry knot | ~5× | Cluster of square knots — estimate, tension-dependent | Decorative texture bands |
| Josephine knot | ~5× | Two interlocked loops — estimate | Decorative panels, curtain tie-backs |
| Double half hitch | 8× | Dense diagonal/clasp patterns eat the most cord | Tight wall-hanging patterns, dense fringes |
Spool optimizer — 100 m vs 200 m
Macrame cord is usually sold on 100 m and 200 m spools. The calculator above already picks the combination with the least waste (fewest spools breaks the tie).
Methodology & honesty
Exactly what the calculator does — no black box.
- Cut length per cord = finished length × knot multiplier × thickness factor (3 mm → 1.0, 4 mm → 1.1, 5 mm → 1.2).
- Total cord = cut length × number of cords × (1 + allowance %).
- Spools: least-waste mix of 100 m / 200 m spools covering the total.
- Weight: length × ~8 g/m (3 mm), ~12 g/m (4 mm), ~16 g/m (5 mm) for cotton cord — an estimate for shipping/buying.
Macrame cord questions, answered
The questions macrame makers actually ask — from “how long should macrame cord be” to spool sizes — each answered with real numbers from the calculator above.
How do I calculate how much macrame cord I need?
Multiply the finished length of your piece by a knot multiplier, then by the number of cords: cut length per cord = finished length × multiplier. For square-knot work the community standard is 4×. So a 60 cm wall hanging needs cords cut at about 60 × 4 = 240 cm each (before the thickness adjustment). Enter your numbers in the calculator above and it does the rest, including spools.
What is the 4x rule in macrame?
The 4× rule is the macrame community's rule of thumb: cut each cord about four times the finished length of the project for square-knot work. It's an estimate, not a law of physics — it assumes average knot density and tension. Dense patterns (double half hitch) need up to 8×, while a simple lark's head mount needs only about 2×. When in doubt, cut long: you can always trim, you can't add cord.
How long should macrame cords be for a wall hanging?
For a typical 60 cm-drop wall hanging in 4 mm cord with square knots: 60 cm × 4 × 1.1 ≈ 264 cm (about 2.6 m) per cord. With 40 cords on the dowel that's roughly 106 m total, or about 116 m with a 10% safety allowance — one 200 m spool covers it. Making a large wall hanging with a 90 cm drop? That's 90 × 4 × 1.1 ≈ 396 cm per cord. Adjust the finished length and cord count in the calculator for your exact piece.
How many yards of macrame cord do I need for a plant hanger?
A standard plant hanger with a ~100 cm (39 in) drop, 8 cords, square knots, 4 mm cord: 100 × 4 × 1.1 = 440 cm per cord, 8 cords = 35.2 m, plus 10% allowance = 38.7 m ≈ 42 yards. One 100 m (109 yd) spool is plenty, with lots left over for the next hanger.
How long to cut cord for a macrame bracelet?
For a 20 cm finished bracelet in 3 mm cord with square knots: 20 × 4 = 80 cm per cord — that's the short answer to how long to cut cord for macrame bracelet projects. A classic square-knot bracelet uses 4 cords (2 working, 2 filler), so 4 × 80 cm = 3.2 m total. Add a little extra for the closure ties — the 10% allowance in the calculator covers it.
What size cord should I use for macrame — 3mm, 4mm or 5mm?
3 mm for delicate work (bracelets, keychains, dreamcatchers); 4 mm as the all-round standard (wall hangings, plant hangers, table runners, bags); 5 mm for chunky, load-bearing pieces (curtains, hanging chairs, heavy plant hangers). Thicker cord also consumes a bit more per knot — this calculator adds +10% at 4 mm and +20% at 5 mm versus 3 mm.
How much cord does a square knot use?
A square knot consumes roughly 4× the finished length per working cord — that's the origin of the 4× rule. Concretely: 10 cm of finished square-knot sinnet needs about 40 cm of cord per strand. Knot it tighter than average and you'll use more; looser, less.
Spiral knot vs square knot — which uses more cord?
The spiral knot uses more: about 6× the finished length per cord versus 4× for square knots. The half-knot twists that create the spiral wrap extra cord around the fillers. Use the 6× setting in the calculator for spiral plant hangers and twisted bag straps.
What is a lark's head knot and how much cord does it need?
The lark's head is the mounting knot that attaches cords to a dowel, branch or ring: fold a cord in half, loop it over the bar, pull the ends through. It consumes very little cord — about 2× the finished length per cord, mostly for the fold itself. In practice the lark's head is included inside the 4× cut for the whole project.
How much cord do I need for a macrame table runner or curtain?
These are the big ones. A 180 cm table runner with 48 cords (4 mm, square knots): 180 × 4 × 1.1 ≈ 792 cm per cord → about 418 m total with allowance — the spool optimizer recommends 2 × 200 m + 1 × 100 m spool. A 150 cm curtain panel with 60 cords in 5 mm: 150 × 4 × 1.2 = 720 cm per cord → about 475 m total with allowance (2 × 200 m + 1 × 100 m spool). Big projects are why the spool optimizer exists.
How much cord do I need for a macrame hanging chair?
A hanging chair is a major project: makers commonly report 300–500 m of 5–6 mm cord depending on the chair size and pattern density. Use 5 mm minimum (load-bearing!), the 8× dense setting if your pattern is mostly double half hitch, and a generous 15–20% allowance. Because chairs vary so much, treat any estimate as a starting point and buy one spare spool.
How do I convert macrame cord from meters to yards?
Multiply meters by 1.09361 to get yards (divide yards by the same number to go back). 100 m = 109.4 yd; 200 m = 218.7 yd. Toggle “Imperial (in / yd)” at the top of this page and the whole calculator — including results — switches to inches and yards automatically.
How many grams is 100 meters of macrame cord?
For cotton cord, roughly: 3 mm ≈ 800 g, 4 mm ≈ 1,200 g, 5 mm ≈ 1,600 g per 100 m. So if you're converting macrame cord in grams to meters, divide grams by 8 / 12 / 16 for 3 / 4 / 5 mm respectively. These are estimates for buying and shipping — actual weight varies by brand and fiber (braided vs twisted, cotton vs jute). The calculator above shows the estimated weight for your exact project.
Should I buy 100m or 200m spools?
Buy whichever combination covers your total with the least excess — the calculator picks it automatically. Rule of thumb: under ~90 m, one 100 m spool; 90–190 m, one 200 m spool is usually cheaper per meter than two 100 m spools; above that, stack 200 m spools and top up with 100 m. Check price per meter, not per spool.
How many cords do I need for a 60 cm dowel?
Spacing cords about twice the cord diameter apart: a 60 cm dowel fits ~75 cords of 4 mm, ~100 cords of 3 mm, or ~60 cords of 5 mm. That's the full-coverage count — many designs use fewer cords with gaps for an airy look. Use the dowel helper above for any width.
Is this macrame cord calculator accurate?
It's as accurate as the craft allows: the knot multipliers (2×/4×/6×/8×) are community rule-of-thumb estimates, not measured constants — real consumption depends on your knot tension, pattern density and cord brand. The calculator is honest about that and adds a 10% safety allowance by default (adjustable to 20%). For expensive cord or huge projects, knot a 10 cm test sample first and measure your own multiplier.