Sewing & crafts
Curtain fabric planner
Estimate joined fabric widths, repeat-matched drops and total fabric length.
A clear answer. Here’s how.
Each curtain needs track width × fullness ÷ curtain count in finished flat width. Joined full widths lose two seam allowances per join and the two outer side allowances. Finds the fewest whole widths per curtain. Each drop includes top/bottom allowances and rounds up to a whole vertical repeat. All drops start at the same pattern phase. Excludes horizontal motif alignment, lining, heading-specific extra fabric and roll-end waste.
See a worked example
Worked example
A fixed demonstration, separate from the values you enter above.
- Total track or pole width (cm)
- 200
- Fullness multiplier
- 2
- Number of equal curtains
- 2
- Finished curtain drop (cm)
- 220
- Usable fabric width (cm)
- 140
- Side allowance at each outer edge (cm)
- 5
- Seam allowance on each side of a join (cm)
- 1.5
- Combined top and bottom allowances (cm)
- 30
- Vertical pattern repeat (cm; 0 for plain)
- 0
Example result
- Full widths per curtain
- 2
- Total full-width drops
- 4
- Cut length per drop
- 250 cm
- Finished flat width per curtain
- 267 cm
- Resulting fullness
- 2.67
- Total fabric length
- 10 m
Joined widths are balanced equally between curtains. Add any roll-end, lining or heading-specific requirements separately.