How to Measure Your Floor

A simple guide to calculating square metres (m²) for your renovation.

Getting an accurate quote for floor sanding starts with knowing the size of your space. You don't need a professional laser measure to get it right—a standard tape measure and a calculator are all you need.

Tools You Will Need

  • 📏Tape Measure
  • 📝Notepad & Pen
  • 📱Calculator

Step 1: The Basic Rectangle

Most rooms are rectangular. Measuring these is simple:

  1. Measure the Length of the room from wall to wall.
  2. Measure the Width of the room.
  3. Multiply the Length by the Width.

Length (m) × Width (m) = Area (m²)

Example: 5m × 4m = 20m²

Step 2: L-Shaped Rooms

Don't try to measure an L-shaped room all at once. Break it down into two separate rectangles.

  1. Imagine a line splitting the room into Rectangle A and Rectangle B.
  2. Calculate the area of Rectangle A.
  3. Calculate the area of Rectangle B.
  4. Add them together to get the total.

Step 3: Hallways and Alcoves

For hallways, measure the main stretch first. If there are small off-shoots or cupboards you want sanded, measure them separately as small rectangles and add them to your total.

Tip: If you have a bay window or fireplace hearth, treat it as a small extra rectangle.

Step 4: Combine and Round Up

Once you have the area for each room:

  • Lounge: 25m²
  • Dining: 15m²
  • Hallway: 8m²
  • Total: 48m²

It is always a good idea to round up slightly. If your calculation is 48.2m², call it 50m². This ensures any slight variations don't lead to under-quoting.


Got Your Measurements?

Use our instant calculator to see how much your project might cost.

Go to Cost Calculator