Curtain Puddle Length Calculator

Measure once, then choose a graceful floor puddle. Add hems, header drop, and shrinkage allowances. Print or download your plan for clean sewing today.

Full options
Enter measurements for garden rooms, patio doors, or shaded pergolas
Tip: Measure rod-to-floor at three points, then use the smallest value.
History saved: 0/12
All inputs and outputs follow this choice.
Measure from rod top line to finished floor.
Use 0 for floor-touching hems.
Classic puddle suits relaxed garden seating.
Folded hem or header finish at top.
Heavier hem helps outdoor drafts.
Extra length for tape, rings, or pleats.
Used for width planning notes, not length.
Outdoor fabrics can relax after hanging.
Result length applies per panel.
Saved with your history for quick exports.
Reset CSV PDF
Example data table
Scenario Mount height Clearance Puddle style Finished length Cut length
Patio door, relaxed seating 240 cm 0 cm Classic (15 cm) 255 cm 281.1 cm
Greenhouse entry, tidy hem 220 cm 1 cm Short (6.5 cm) 225.5 cm 248.4 cm
Outdoor cabana, dramatic drape 260 cm 0 cm Luxury (25 cm) 285 cm 314.7 cm
Example cut lengths include hems, header allowance, and 2% shrinkage.
Formula used
  • Finished Length = Mount Height − Clearance + Puddle Extra
  • Raw Cut Length = Finished Length + Top Hem + Bottom Hem + Header Allowance
  • Cut Length = Raw Cut Length × (1 + Shrinkage% ÷ 100)
Puddle Extra uses the mid-point of the chosen style range, unless Custom is selected. For outdoor garden spaces, consider slightly larger hems for weight and stability.
How to use this calculator
  1. Measure rod-to-floor height at left, center, and right.
  2. Enter the smallest value as Mount Height.
  3. Set Clearance if you want airflow and easier cleaning.
  4. Pick a puddle style, or set a custom puddle value.
  5. Add hem and header allowances that match your sewing plan.
  6. Click Calculate, then export CSV or PDF if needed.
Saved calculation history
Download CSV Download PDF
No saved calculations yet. Run a calculation to store it here.

Related Calculators

Curtain panel quantity calculatorCurtain fabric yardage calculatorCurtain rod bracket spacingCurtain lining yardage calculatorCurtain interlining yardage calculatorCurtain hem allowance calculatorCurtain tieback placement calculatorCurtain tieback length calculatorCurtain width per windowCurtain drop length calculator

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.