Estimate rings, spacing, rows, and lift lines accurately for custom shades. Plan clean, even folds. Get balanced projects with cleaner folds and easier setup.
| Example | Width | Length | Max Lift Spacing | Vertical Spacing | Columns | Rows | Total Rings |
|---|---|---|---|---|---|---|---|
| Potting Shed Window | 90 cm | 140 cm | 22 cm | 20 cm | 5 | 6 | 30 |
| Greenhouse Side Window | 120 cm | 160 cm | 25 cm | 22 cm | 6 | 7 | 42 |
| Garden Room Shade | 150 cm | 180 cm | 28 cm | 24 cm | 6 | 7 | 42 |
The calculator first finds usable width and height. Usable width = finished width − (2 × side inset). Usable height = finished length − top clearance − bottom clearance.
In auto mode, lift-line columns = ceil(usable width ÷ maximum lift-line spacing) + 1. Actual horizontal spacing = usable width ÷ (columns − 1).
Ring rows = floor(usable height ÷ target vertical spacing) + 1, with a minimum of 2. Actual vertical spacing = usable height ÷ (rows − 1).
Total rings = columns × rows. Spare rings = ceil(total rings × spare percentage ÷ 100). Recommended order = total rings + spare rings.
Estimated cord length for each lift line = shade length + horizontal run to the control side + wrap allowance. Total cord length is the sum of every lift-line cord.
Roman shades are often used in greenhouses, potting sheds, sunrooms, and garden workspaces. These spaces need tidy window coverings that soften glare, protect seedlings from strong light, and keep cords and hardware organized. A ring count calculator reduces trial-and-error cutting, keeps fold lines even, and helps you order parts before sewing begins.
When you know the number of lift lines and rows, you can plan stitching, cord routing, and material buying with fewer surprises. That matters when working around planting benches, misting setups, and narrow garden room windows where clean movement and balanced folds are important.
It estimates ring rows, ring columns, total rings, spare rings, lift lines, and cord length for a Roman shade build.
Side inset places the outer lift lines away from the edges. That improves folding balance and reduces edge strain during raising and lowering.
Auto mode works well when you only know the widest acceptable spacing. Manual mode helps when you already follow a fixed lift-line layout.
Spare rings cover sewing mistakes, breakage, replacements, and later repairs. A small reserve avoids delays during installation or maintenance.
It is extra cord length added to each lift line for routing, tying, and fastening at the headrail or control side.
Yes. Select inches, then enter every measurement in inches. The output remains in the same unit you selected.
The plot marks each ring position across the shade face. It helps you inspect spacing before sewing or marking the fabric.
Yes. It is useful for garden rooms, sheds, greenhouses, and sunrooms where controlled light, neat folds, and organized hardware matter.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.