Paper Quilling Strip Calculator

Paper quilling (also called filigree) is the art of rolling, shaping, and gluing narrow strips of paper to create decorative designs.

Standard strip dimensions:

• Width: 3 mm (fine), 5 mm (standard), 10 mm (wide)
• Length: 45 cm (18 in) or 54 cm (21 in), the standard pre-cut lengths

Common shapes and strip counts:

• Tight coil: 1–2 strips (fully rolled, glued at end)
• Loose coil: 1 strip, allowed to relax before gluing
• Teardrop / Marquise: 1 strip pinched into shape
• Scroll: 1 strip, both ends curled
• Petal / Eye: 1 strip pinched at both ends
• Bunny ear / Triangle: 1–2 strips folded and shaped
• Flower (5 petals): 5 strips, one per petal
• Leaf cluster: 3–5 strips

Coil diameter formula:

Here is the thing people get backwards. The width of the strip is the depth of the finished coil, standing up off the card. It has nothing to do with how wide the coil is. What sets the diameter is the strip LENGTH and the paper THICKNESS, because a tight coil seen face-on is a spiral of paper edges:

Diameter ≈ √(4 × Length × Paper thickness ÷ π)

Quilling paper runs about 0.15 mm thick at 120 gsm and 0.20 mm at 160 gsm. A 45 cm strip of 120 gsm therefore rolls down to √(4 × 450 × 0.15 ÷ π) ≈ 9 mm across. Cut that same strip at 10 mm wide instead of 5 mm and the coil is still 9 mm across, just twice as deep.

So to make a bigger coil you need a longer strip, not a wider one. Wider paper gives you a chunkier, more three-dimensional piece at the same footprint.

Paper requirements: If you are cutting your own strips from sheets, the direction you cut matters:

• A4 (21 × 29.7 cm) at 5 mm: 42 strips of 29.7 cm, or 59 strips of 21 cm
• Letter (21.6 × 27.9 cm) at 5 mm: 43 strips of 27.9 cm, or 55 strips of 21.6 cm
• Either way you get the same total length of paper out of the sheet, roughly 12.5 metres at 5 mm
• No standard sheet yields a 45 cm strip in one piece, so long strips get joined end to end with a small overlap. Hide the join inside the coil where nobody will find it

Tips:

• Use a quilling tool or toothpick to start your coil
• Paper grain direction affects how easily strips curl — experiment with your paper
• Cardstock is too stiff; copy paper is too thin; quilling paper is ideal at 120–160 gsm
• Add 10–15% extra strips for mistakes and practice