Updated 19 September 2026 · Planning guidance with linked calculators
Window Treatment Cost Calculator checkpoint
Three windows are compared using the same scope: 150 units of material, 35 units of hardware, and 120 units of installation for the complete project.
Inputs used
| Number of windows | 3 |
|---|---|
| Treatment per window | 150 |
| Hardware per window | 35 |
| Installation total | 120 |
| Currency | USD ($) |
Calculator result
- Treatment and hardware per window
- 185.00 USD
- Estimated project cost
- 675.00 USD
Decision from this checkpoint
Use the common scope to compare treatment options fairly, then replace the allowances with quotes for the exact blind or curtain specification.
- Confirm whether fitting, delivery, lining, and tracks are included.
- Keep the window measurements identical across alternatives.
Tools referenced in this project
- Blind Size Calculator
- Curtain Fullness Calculator
- Curtain Fabric Calculator
- Curtain Rod Length Calculator
- Window Treatment Cost Calculator
Record the window and surrounding space
Measure the opening width and height in more than one place and note the reveal depth, sill, handles, radiators, nearby furniture, and available wall space above and beside the window. Keep the smallest and largest measurements rather than averaging immediately because inside-fit products can depend on the tightest dimension.
Decide whether the treatment sits inside or outside
An inside blind needs enough reveal depth and accurate opening dimensions, while an outside blind or curtain uses the wall area around the window. The fixing position affects light gaps, stack-back, and how much glass remains visible. Confirm the selected manufacturer's measuring instructions before converting the room measurements into an order size.
Calculate curtain width, fullness, and rod length together
Curtain width depends on the track or rod width and the intended fullness. Rod length also affects how far the curtains can stack away from the glass. Use the tools to compare combinations, then check the heading type, fabric width, repeat, lining, and whether the supplier sells single panels or pairs.
Check the finished drop against the real room
Measure from the actual fixing position to the intended finished point rather than from the top of the window alone. Decide whether the fabric finishes at the sill, below the sill, or near the floor, and check for radiators, desks, or other furniture. Uneven floors and ceilings can also matter on long curtains.
Compare complete installed cost
When comparing a blind with curtains, include the hardware, brackets, track or rod, lining, making charges, delivery, and fitting where relevant. A fabric-only price can make one option appear cheaper than the complete treatment. Keep the same window measurements and scope when comparing the two alternatives.