Roman Blind Fabric Yardage by Window Size: Quick Reference Tables
Updated: May 27, 2026
How to Use These Tables
All yardages are for 137 cm (54”) fabric, one blind per window.
Assumptions:
- Fold depth: 12 cm (4.7”)
- Fold spacing: 25 cm (10”) target
- Top allowance: 5 cm (2”)
- Bottom hem: 10 cm (4”)
- Side hem: 2.5 cm (1”) each side
- Inside recess mount (finished width = window width − 2 cm)
- No pattern repeat
For your exact measurements, use the Roman Blind Calculator.
Flat Roman Blind — Fabric in Metres
| Window Width → | 60 cm | 90 cm | 120 cm | 150 cm |
|---|---|---|---|---|
| Drop 80 cm | 1.77 m | 1.77 m | 1.77 m | 1.77 m |
| Drop 100 cm | 2.01 m | 2.01 m | 2.01 m | 2.01 m |
| Drop 120 cm | 2.31 m | 2.31 m | 2.31 m | 2.31 m |
| Drop 140 cm | 2.55 m | 2.55 m | 2.55 m | 2.55 m |
| Drop 150 cm | 2.79 m | 2.79 m | 2.79 m | 2.79 m |
| Drop 180 cm | 3.09 m | 3.09 m | 3.09 m | 3.09 m |
Note: Fabric yardage for a flat roman blind does not vary by width (for blinds under 137 cm finished width — one fabric width covers all). Width only affects fabric if the cut width exceeds the bolt width.
Bold = most common UK residential window sizes.
Flat Roman Blind — Fabric in Yards
| Window Width → | 24” | 36” | 48” | 60” |
|---|---|---|---|---|
| Drop 32” | 1.94 yd | 1.94 yd | 1.94 yd | 1.94 yd |
| Drop 40” | 2.20 yd | 2.20 yd | 2.20 yd | 2.20 yd |
| Drop 48” | 2.53 yd | 2.53 yd | 2.53 yd | 2.53 yd |
| Drop 56” | 2.80 yd | 2.80 yd | 2.80 yd | 2.80 yd |
| Drop 60” | 3.05 yd | 3.05 yd | 3.05 yd | 3.05 yd |
| Drop 72” | 3.38 yd | 3.38 yd | 3.38 yd | 3.38 yd |
Bold = most common US residential window sizes.
Cascade Roman Blind — Fabric in Metres
Cascade requires more fabric per fold (3× instead of 2×) — see How to Calculate Cascade Roman Blind Fabric for the full cascade formula:
| Drop | Folds | Flat (m) | Cascade (m) | Extra for Cascade |
|---|---|---|---|---|
| 80 cm | 3 | 1.77 m | 2.07 m | +0.30 m |
| 100 cm | 4 | 2.01 m | 2.49 m | +0.48 m |
| 120 cm | 4 | 2.31 m | 2.79 m | +0.48 m |
| 150 cm | 5 | 2.79 m | 3.39 m | +0.60 m |
| 180 cm | 5 | 3.09 m | 3.69 m | +0.60 m |
Bold = most common drop for bedroom and sitting room blinds.
When Blind Width Exceeds Fabric Width
If the finished blind width + side hems > fabric bolt width (137 cm), you will need to join fabric widths.
Cut width exceeds fabric width when:
- Inside recess: window width > approximately 132 cm (finished + hems ≈ 133.5 cm)
- Outside mount: window width > approximately 124 cm (finished adds 10 cm + hems)
For wide blinds, you need to join two fabric widths. Add the full cut length a second time.
| Finished Width | Widths Needed | Example Fabric (2.31 m cut) |
|---|---|---|
| Under 130 cm | 1 width | 2.31 m |
| 130–260 cm | 2 widths | 4.62 m |
| 260–390 cm | 3 widths | 6.93 m |
For very wide blinds, consider two separate roman blinds side-by-side rather than one joined blind.
Add for Lining
Lining cut length = drop + fold allowance + 2 cm (approximately 98% of face fabric cut length).
Practical rule: add 0.85× face fabric yardage to get total lining yardage. For lining types and attachment methods, see the Roman Blind Lining Guide.
| Face Fabric | Lining (approx) |
|---|---|
| 1.77 m | 1.5 m |
| 2.31 m | 2.0 m |
| 2.79 m | 2.4 m |
| 3.09 m | 2.7 m |
Add for Pattern Repeat
If the fabric has a pattern repeat, add extra fabric:
Extra per blind = 1 pattern repeat lengthThis ensures you can cut the blind starting at the same point in the repeat regardless of where your cut falls on the bolt.
| Repeat Length | Extra to Add |
|---|---|
| 10 cm (4”) | +0.10 m (+0.11 yd) |
| 15 cm (6”) | +0.15 m (+0.17 yd) |
| 25 cm (10”) | +0.25 m (+0.28 yd) |
| 35 cm (14”) | +0.35 m (+0.38 yd) |
Bold = most common pattern repeat for standard furnishing fabric.
Safety Margin
Always add 10% to the calculated fabric amount before ordering:
- Allows for cutting errors
- Accounts for any shrinkage (pre-wash linen before cutting)
- Provides small offcuts for making ties, loops, or replacement pieces
Round up to the nearest 0.25 m (¼ yard) when ordering.
Use the Roman Blind Calculator for exact measurements based on your specific window.
See also: Roman Blind Fabric Formula and How to Calculate Roman Blind Folds.