Macrame Cord Length Calculator

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Project preset:

Choose the closest project shape; Custom keeps a neutral manual starting point.

Cord count:

A folded cut becomes two working strands after mounting.

From width Manual count

Finished length:

Changing the unit preserves the same physical length.

Unit

Finished width:

The result rounds upward to an even, square-knot-friendly mounted count.

Unit

Mount spacing:

Tighter spacing raises the mounted cut count across the same width.

Unit

Mounted cut cords:

Use the mounted cut count specified by the pattern.

cuts

Mounting method:

Knot density:

Use a sample-knot ratio when the pattern does not match a common density.

Sample multiplier:{{ formatNumber(custom_multiplier, 2) }}x

Divide cord consumed by the finished length of a representative knot repeat.

Adjust sample multiplier

Fringe or tail length:

Fringe must not exceed the finished length.

Unit

Top allowance:

Added to each working side before a folded mount is doubled.

Unit

Reserve allowance:{{ formatNumber(reserve_percent, 1) }}%

Added after the repeatable cut list for samples, trimming, tension variation, and mistakes.

Adjust reserve allowance

Round each cut up to:

Use zero for the raw model length.

Unit

Spool or package length:

Package count always rounds upward to a whole purchase unit.

Unit

Package price:

Set zero when cost is not needed.

$/ package

Sample correction:{{ formatSignedPercent(sample_adjustment_percent) }}

Raise or lower knotted-body consumption after comparing one real repeat; zero leaves the selected density unchanged.

Adjust sample correction

Cord diameter:

Zero leaves the spacing check unclassified.

ValueUnit

Macrame cut plan
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Macrame shopping plan
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Macrame planning checks
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A macrame piece that finishes at one metre can consume several metres of cord in each working strand. Knots bend cord around other strands, tightening and shortening the visible length. Dense square knots, spirals, berry knots, and repeated hitching consume more cord than open lacing across the same finished drop.

Cut planning separates the knotted body from the lengths that remain mostly straight. Fringe is part of the finished drop but is not multiplied by knot density. Top allowance covers mounting and tying near the support. A folded lark's head uses both halves of one cut, so the working-side estimate is doubled before the cord is cut.

Width and mount spacing determine how many physical cords are attached when a pattern does not already give a count.
Knot density estimates how much cord the knotted body consumes.
Mounting method determines whether one cut becomes two working strands or remains a single strand.
Reserve covers samples, trimming, tension differences, and mistakes after the repeatable cut list has been calculated.

Multiplier rules are starting estimates, not universal material constants. Cord diameter, construction, stiffness, knot choice, hand tension, and the proportion of filler cords can all change consumption. A small sample made with the actual cord and knot repeat is the strongest way to replace a generic multiplier with project evidence.

Shopping and cutting answer different questions. Each cut must be long enough before work begins, while the total purchase must also cover every cut, reserve, and whole-package rounding. Buying enough total metres does not help if individual pieces were cut too short.

How to Use This Tool:

Choose a nearby project shape, then replace its assumptions with measurements from the pattern or sample.

Select a Project preset. Choose From width to estimate mounted cuts from width and spacing, or Manual count when the pattern already gives the physical cut count.
Enter finished length, mounting method, knot density, fringe, and top allowance. Use Custom sample multiplier when a measured knot repeat is available.
Set the reserve allowance, upward cut-rounding increment, package length, and optional package price. Keep all units tied to the physical measurements rather than copying bare numbers between units.
Read Recommended cut length before cutting. Then use Total cord on hand and package count for purchasing, and review the planning checks for unusually low reserve, long fringe, tight spacing, or high leftover.

Interpreting Results:

Calculated cut length is the raw model result for one physical cord. Recommended cut length rounds that value upward to the selected ruler-friendly increment. Cutting to the raw value when upward rounding is enabled removes the intended practical margin from every cord.

Total cord on hand includes the rounded cut list and reserve but not the extra caused by buying whole packages. Expected leftover is purchased length minus that order total. Compare the density curve before purchasing when the knot pattern is uncertain, because a denser multiplier can change both cut length and package count.

Technical Details:

All physical lengths are converted to centimetres before calculation. The knotted body equals finished length minus fringe. A sample correction then raises or lowers the selected density multiplier, while fringe and top allowance are added as direct lengths.

Formula Core:

The main equation estimates one physical cut before the optional upward rounding increment is applied.

\begin{array}{lcl} m_{adj} & = & m (1 + \frac{a}{100}) \\ L_{raw} & = & [(L - F) m_{adj} + F + T] f + E \end{array}

Macrame cord formula variables
Symbol	Meaning	Unit
L, F, T	Finished length, fringe length, and top allowance	cm
m, a	Density multiplier and sample correction percentage	ratio, percent
f, E	Mount fold factor and fixed mount extra	ratio, cm
L_raw	Calculated length of one physical cut before rounding	cm

Width mode divides finished width by centre-to-centre mount spacing, rounds upward, and then raises an odd count to the next even number. Manual mode uses the entered whole cut count. A folded lark's head creates two working strands per cut; single-hanging and ring starts create one.

\begin{array}{lcl} L_{order} & = & N L_{cut} (1 + \frac{r}{100}) \\ P & = & ⌈ \frac{L_{order}}{L_{package}} ⌉ \end{array}

Rule Core:

Macrame density and mounting rules
Setting	Value	Calculation effect
Open pattern	3.25×	Applies to the knotted body.
Standard square-knot mix	4.25×	Applies to the knotted body.
Dense square or spiral knots	5.5×	Applies to the knotted body.
Very dense or berry knots	6.25×	Applies to the knotted body.
Folded lark's head	factor 2	Doubles the working-side estimate with no fixed extra.
Single hanging cord	factor 1	Adds a fixed 2 cm tie allowance.
Ring or wrap start	factor 1	Adds a fixed 8 cm gathered-start allowance.

Accuracy Notes:

The density multipliers and mount extras are planning assumptions. A sample correction from −50% to 100% can adjust the knotted-body estimate, but it cannot represent every knot transition or unequal strand role. Measure a complete repeat with the actual cord, tension, and filler arrangement before cutting expensive material. Cord diameter supports the spacing warning only and does not change the length formula.

Worked Examples:

Standard wall hanging

A 70 cm drop with 15 cm fringe leaves 55 cm of knotted body. At 4.25× density with a 6 cm top allowance and folded mount, the raw cut is 509.5 cm and rounds up to 510 cm. A 45 cm width at 1.9 cm spacing becomes 24 mounted cuts and 48 working strands. The cut list uses 122.4 m; a 15% reserve raises the order to 140.76 m, so 100 m packages require two spools and leave an estimated 59.24 m.