How to Measure Your Windows for Custom Blinds

Published: February 14, 2026 When you invest in premium window treatments, the difference between a "good" fit and a "perfect" fit comes down to a few millimetres. At Blinds Concept, we have spent years helping homeowners across Halifax, Dartmouth, Bedford, and Sackville elevate their interiors with bespoke solutions. While our team is always available for professional on-site measurements, many Nova Scotia residents prefer to start the process themselves to get a head start on their home renovation projects. Measuring for custom blinds isn't inherently difficult, but it does require a specific methodology to ensure your new window coverings operate smoothly and look integrated into your architecture. Whether you are overlooking the Halifax Harbour or nestled in a quiet Bedford suburb, this guide will provide the technical precision needed to measure your windows like a pro. How do I calculate the size of blinds I need? The first step in calculating your blind size is deciding on the mounting style. There are two primary ways to install window treatments, and your measurements will differ significantly based on your choice: Inside Mount: The blind is installed inside the window casing. This provides a sleek, "built-in" look and is the most popular choice for modern Halifax homes. It showcases the window trim but requires more precise measurements to ensure the blind doesn't ru…