Rigid Heddle Project Planner Calculator

Yarn and setup for rigid heddle loom projects.

Loom weaving width (in)

Heddle dent (slots per inch)

Finished length (inches)

Finished width (inches)

Shrinkage %

Take-up %

Yards per ball/skein

Tab to move between fields

Warp yarn (yards)

486

Weft yarn (yards)

321

Total warp ends161

Total yarn (yards)807

Balls/skeins needed4

Fits on loom (1=yes, 0=no)1

Warp Balls3

Weft Balls2

How to Use This Calculator

Enter your loom's maximum weaving width in inches.
Enter the heddle dent size (slots per inch) — common sizes are 5, 8, 10, and 12 dent.
Enter the desired finished length and width of the woven piece after washing.
Set the shrinkage and take-up percentages for your fiber — 8% shrinkage and 10% take-up are typical for cotton.
Enter the yards per ball or skein of your chosen yarn.
Read the warp and weft yarn yardage needed, total yardage, and number of balls or skeins to buy.

How the result changes with Heddle dent (slots per inch)

Loom weaving width (in): Maximum weaving width of your rigid heddle loom.
Heddle dent (slots per inch): Your rigid heddle size: 5, 8, 10, or 12 dent are most common.
Finished length (inches): Desired finished length of the woven piece.
Finished width (inches): Desired finished width after washing.
Shrinkage %: Expected shrinkage after wet-finishing.
Take-up %: Warp shortening from interlacement.
Yards per ball/skein: Yardage in each ball or skein of your chosen yarn.

Total warp ends: Number of warp threads (slots + holes).
Warp yarn (yards): Warp yardage needed.
Weft yarn (yards): Weft yardage needed.
Total yarn (yards): Combined warp + weft yardage.
Balls/skeins needed: Number of yarn balls needed (same yarn for warp and weft).
Fits on loom (1=yes, 0=no): Whether your project width fits the loom weaving width.

Identify Input Parameters
4 parameters
Loom weaving width (in) = 20, Heddle dent (slots per inch) = 10, Finished length (inches) = 60, Finished width (inches) = 15 = 7 input(s) provided
Calculate Warp yarn
Warp yarn = (totalEnds * warpLength) / 36
486 = 486
Calculate Weft yarn
Weft yarn = (totalPicks * widthOnLoom * 1.1) / 36
321 = 321
Calculate Total warp ends
Total warp ends = round(widthOnLoom * epi)
161 = 161
Calculate Total yarn
Total yarn = warpYarnYards + weftYarnYards
807 = 807