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Blind Size Calculator

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Please check.

  • Since the window frame may not be perfectly level, you must measure at least three places in both the width and height and input the smallest dimension to ensure there are no obstructions during installation.
  • If you want recessed installation inside the window frame, please make sure to check first whether the window handle is protruding and if there is sufficient depth (at least 10–12 cm] for the top box of the blind to fit into.
  • Large windows with a width exceeding 240cm are at high risk of failure due to their weight, so it is much better for usability and aesthetics to order them in two or more sections based on the window frame.
  • When measuring vertical height, if there is a curtain box on the ceiling, you must measure from the inside of the box to the floor for accuracy; please be careful, as measuring from below the molding may result in a shorter blind length.
  • To maximize the blackout effect, when installing outside the window frame, it is standard practice to determine the size by adding about 50 to 100 mm of extra space on each side to sufficiently cover any gaps where light leaks in.

How about this calculator?

Blind Measurement Calculator, Fail-Proof Custom Blind Size Calculation Guide

Even a margin of error of just 1cm can make blind installation impossible or cause light leakage. We calculate the final dimensions that can be immediately entered for custom orders by applying precise adjustments based on the installation environment (recessed/surface].

Blind Production Size Calculation Formula

Depending on the installation location, the size is determined by adding or subtracting a certain value from the window frame.

Calculate the width of the blind
Installation inside the window frame: Custom width = Actual width - 1cm, Installation outside the window frame: Custom width = Actual width + (10cm ~ 20cm]
Blind height size calculation
Full-length / Recessed Installation: Order Height = Actual Height - 1cm, Half-length / Projecting Installation: Order Height = Actual Height + (10cm ~ 20cm]

Detailed Guide to Calculator Input Items

Please verify the actual window measurements and installation method to calculate the exact size.

1. Select installation method

If you want a clean look, choose 'Inside the window frame'; if you want complete light blockage and to avoid exposing the window frame, choose 'Installed outside the window frame'.

2. Horizontal space (horizontal option]

When embedded inside the window frame, leave 10mm to ensure a gap on both sides, and when installed outside the window frame, make it about 50 to 100mm wider than the window frame to prevent light leakage.

3. Bottom clearance (vertical option]

For full-length windows or living room windows, it is recommended to leave 10mm so they do not drag on the floor, and for half-length windows or room windows, make them about 50 to 100mm longer than the window frame to block light.

Expert Practical Tips & Checklist

Here are the expert checkpoints for a successful blind installation.

  • Caution: Handle Interference (System Windows]

    If the window handle protrudes, the blind may get caught during recessed installation. In this case, change the installation to outside the window frame or check that the inner depth of the box is at least 12cm.

  • Horizontal size division

    If the width exceeds 240cm, it is prone to malfunction due to the weight. It is recommended to order it in two sections based on the window frame for better usability and aesthetics.

  • Check for the presence of a curtain box

    When measuring the vertical height, you must measure from the ceiling (highest side] inside the curtain box to the floor for accuracy. Measuring from below the molding may result in a shorter length.

Frequently Asked Questions (FAQ]

  • Q. How deep must the inside of the window frame be for it to be recessed?
  • A. Depending on the type of blind, combi or wood blinds usually require a flat depth of about 8 to 10 cm to be neatly recessed.
  • Q. The window is divided into two sections; can I order just one?
  • A. Ordering a single unit is convenient to operate, but it may be inconvenient when opening only one window for ventilation. We recommend installing them separately to fit individual window frames whenever possible.
  • Q. How are decimal points handled during actual measurements?
  • A. Depending on the custom manufacturer, it is generally safer to specify the exact amount down to the millimeter (mm] or round up to the nearest 0.5 cm when placing an order.
note.

The required area based on the order size is automatically converted to square meters and reflected in the quote.