Color-and-Weave Effect Calculator

Pattern prediction from threading and color sequence.

Project width (inches)

Project length (inches)

Ends per inch (EPI)

Picks per inch (PPI)

Warp color repeat (ends)

Weft color repeat (picks)

Color A in warp %

Color A in weft %

Tab to move between fields

Pattern blocks

12,960

Color A total %

50%

Repeat width (inches)0.33

Repeat height (inches)0.33

Color B total %50%

Dominant block type %25%

Warp Color B Ends120

Weft Color B Picks432

How to Use This Calculator

Enter the project width in inches and the warp sett (ends per inch, EPI).
Enter the project length in inches and the weft sett (picks per inch, PPI).
Set the warp color repeat — for example, 2 for ABAB alternating, 4 for AABB blocks.
Set the weft color repeat and the percentage of color A in both warp and weft.
Read the total pattern blocks and repeat width/height to visualize how the color-and-weave effect tiles across the fabric.
Use the color A total percentage to plan yarn quantities for each color.

How the result changes with Project width (inches)

Project width (inches): Width of the project on the loom.
Project length (inches): Length of the project on the loom.
Ends per inch (EPI): Warp sett.
Picks per inch (PPI): Weft sett.
Warp color repeat (ends): Number of ends in one color repeat (e.g., 2 for ABAB, 4 for AABB).
Weft color repeat (picks): Number of picks in one color repeat.
Color A in warp %: Percentage of warp ends in color A (rest are color B).
Color A in weft %: Percentage of weft picks in color A (rest are color B).

Pattern blocks: Total number of complete pattern repeat blocks across the fabric.
Repeat width (inches): Width of one pattern repeat unit.
Repeat height (inches): Height of one pattern repeat unit.
Color A total %: Percentage of total yarn that is color A.
Color B total %: Percentage of total yarn that is color B.
Dominant block type %: Coverage of the most common color intersection type.

Identify Input Parameters
4 parameters
Project width (inches) = 20, Project length (inches) = 72, Ends per inch (EPI) = 12, Picks per inch (PPI) = 12 = 8 input(s) provided
Calculate Pattern blocks
Pattern blocks = warpRepeats * weftRepeats
12960 = 12960
Calculate Color A total %
Color A total % = ((warpColorAEnds / max(1, totalEnds)) * 50 +
50 = 50%
Calculate Repeat width
Repeat width = warpRepeat / epi
0.33 = 0.33
Calculate Repeat height
Repeat height = weftRepeat / ppi
0.33 = 0.33