How to Measure for a Smart Lock: Step-by-Step Guide for Perfect Fit

Accurate measurements are key to choosing the right smart lock. This step-by-step guide shows how to measure your door, mortise, and frame to ensure a perfect fit. Ideal for smart lock installations.


How to Measure for a Smart Lock Step-by-Step Guide for Perfect Fit! Measurement of the backset size on a door using a ruler from the edge to the center of the lock hole.

1. How to Measure Backset

  • Common sizes: 60mm or 70mm.
  • Measure the distance from the edge of the door to the center of the existing hole where the lock is installed.

Measuring the height, width, and depth of a door mortise lock body using a ruler or caliper.

2. Mortise Lock Measurement

  • Measure the height, width, and depth of the mortise lock.
  • Check the placement of the latch and deadbolt positions.

Using a ruler or caliper to measure the total thickness of the door from one side to the other.

3. Door Thickness Measurement

  • Measure the thickness of your door from one side to the other.
  • Standard sizes: 35mm – 90mm.

Detailed view of the door striker plate area, showing latch and bolt alignment for smart lock fitting.

4. Striker Plate & Frame Measurement

  • Measure the length and width of the striker plate.
  • Check if the door frame is made of metal or wood.

Close-up view of the gap between door and frame to check clearance for smart lock installation.

5. Door Gap Measurement

  • Measure the gap between the door and the frame.
  • Ensure there is enough clearance for a smart lock to function properly.

Measuring the distance between grille door and main wooden door for smart lock compatibility.

6. Additional Considerations for Grille Doors (if applicable)

  • Door-to-Door Distance: Measure the gap between the grille door and the main wooden door.
  • Grille Door Thickness: Ensure compatibility with locks designed for metal frames.

Final Checklist Before Purchasing a Smart Lock

✅ Ensure all measurements match the lock’s specifications.
✅ Consider the type of smart lock that fits best (lever handle, push-pull, rim lock, deadbolt, etc.).
✅ Check if additional accessories are needed for installation.

By following these steps, you can confidently choose a smart lock that fits your door perfectly.

🔹 Need Assistance? Contact Novalock Malaysia for expert advice!


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