Window Treatment Calculators & Tools
Free, practical calculators for choosing and fitting blinds, shades, shutters, and curtains — size a blind for an inside or outside mount, estimate curtain fabric, budget a whole home, pick the right opacity for a room, count slats, and check cord safety.
Blind & Shade Size Calculator
Turn a measured window opening into the size to order — inside or outside mount, with the clearance deduction or coverage overlap already applied, in inches or centimetres.
Curtain Fabric Calculator
Work out how much fabric to buy from your track width, drop, fullness, and pattern repeat — the number of drops and the total yardage or metres.
Window Treatment Cost Estimator
Budget a whole home by window count. List your windows and prices, add fitting, fees, a discount, and tax, and see the total and the cost per window.
Light-Blocking Opacity Selector
Match a room to the right opacity — sheer, light-filtering, room-darkening, or blackout — with its light-blocking range and the privacy it gives day and night.
Slat Count & Ladder Spacing Calculator
Estimate the number of slats in a venetian or faux-wood blind and the ladder-tape pitch from the drop and slat width, plus the raised stack height.
Blind Cord Safety Calculator
Check whether a blind cord or chain is within a child's reach, find the longest safe length, and see when a cordless blind is the safer choice.
Standard Window Size Reference
Nine common window sizes cross-referenced against order size, slat count, curtain fabric, and estimated cost — every figure computed live by the calculators above, not a separate table.