Before buying blinds, it’s crucial to get your measurements right. Whether you’re ordering blackout, thermal, or Venetian blinds, accurate sizing means a better fit, smoother installation, and a more polished look.
Follow this simple guide to measure like a pro — and avoid costly mistakes.
📏 What You’ll Need
- A metal tape measure (not fabric)
- Pen and notepad (or your phone)
- A step stool for tall windows
🪟 Step 1: Decide Inside or Outside Mount
Inside recess: Blinds sit within the window frame — great for a sleek, fitted look.
Outside recess: Blinds go over the window — ideal if the recess is shallow or you want full blackout.
✔ Most thermal and blackout blinds can be fitted either way. Just measure accordingly.
📐 Step 2: Measure the Width
For Inside Recess:
- Measure the width at the top, middle, and bottom of the recess
- Use the smallest measurement
For Outside Recess:
- Measure the total width you want the blind to cover
- Add 5–10cm on each side to block more light
📏 Step 3: Measure the Drop (Height)
Inside Recess:
- Measure left, middle, and right from top to sill
- Use the shortest length
Outside Recess:
- Start from where you’ll mount the blind (above the window)
- Measure down to where you want it to finish
✅ Top Tips
- Double-check every measurement
- Write width x drop (e.g. 120cm x 150cm)
- Don’t make deductions – suppliers do this for inside-recess orders
🔧 Choosing the Right Fit
- Roller blinds – ideal for most spaces; mount either way
- Venetian blinds – inside recess works best for clean lines
- Thermal blinds – outside mount helps trap heat better
👉 Need thermal or blackout blinds? Browse Amazon’s best-rated blinds.
🧰 Bonus: Free Fitting Video Resources
Look for YouTube tutorials from the seller or brand. Most show you how to fit step-by-step in under 15 minutes.
Need help choosing the right blinds for your home? Explore our Taunton Blinds homepage for product guides, deals, and expert tips.
Ready to Order?
Once you’ve got your sizes, you’re set to go. Always choose blinds that are slightly larger if mounting outside the recess. For recess fit, most stores handle the deduction for you.
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