The loom beading calculator determines the total bead count, number of warp threads, and warp thread length needed for your loom bead weaving project. Enter your design dimensions and bead type to get started.
Design Inputs
Added to each end of warp threads for tying off (total extra = this × 2)
Results
Bead Size Reference
| Bead Type | Diameter | Per inch (width) | Per inch (length) | Notes |
|---|
How to Calculate Loom Beading Supplies
Loom beading creates woven beadwork by threading beads between parallel warp threads using a weft thread. Planning your bead count and thread lengths before starting saves time and prevents running out mid-project.
Understanding Bead Density
The number of beads per inch depends on bead size. Size 11/0 seed beads average 18 beads per inch in length and 13 per inch in width (due to bead shape). Delica beads are more uniform and cylindrical, giving slightly more beads per inch. Always buy 15-20% more beads than calculated — it is very hard to match dye lots after the fact.
Warp Thread Planning
You need one more warp thread than the number of columns in your design. Cut all warp threads the same length: your design length plus at least 12 inches extra on each end (24 inches total). The extra length is used to tie off the finished piece. Use FireLine or strong Nymo thread for warp threads — they must hold the tension of the entire piece.
FAQ
How do I calculate how many beads I need for loom beading?
Multiply the number of beads per row by the number of rows. For size 11/0 seed beads, there are approximately 18 beads per inch in length and 13 beads per inch in width. So a 2-inch by 3-inch piece at 11/0 needs roughly 36 beads per row × 54 rows = 1944 beads total, plus a 15% buffer.
How long should warp threads be for loom beading?
Warp threads should be the length of your design plus at least 12-18 inches extra for tying off at both ends. For a 6-inch design, cut warp threads at least 18-20 inches long. The standard rule is: design length + 12 inches minimum.
How many warp threads do I need?
For loom beading you need one more warp thread than the number of beads per row. If your design is 20 beads wide, you need 21 warp threads. The beads sit between the warp threads, one bead per gap.
What is the best bead size for loom beading beginners?
Size 11/0 seed beads are the most popular for loom beading — large enough to see and handle, small enough to create detailed patterns. Size 8/0 is a good choice for complete beginners as it is easier to thread. Delica beads (cylindrical) give cleaner, more uniform results than round seed beads.
Is this tool free?
Yes, completely free — no signup required.