How to Measure Square Footage for Quartz Countertops

Measuring the square footage for quartz countertops is an important step in determining how much material you need to purchase and get an accurate quote from contractors. Here is a comprehensive guide on how to accurately measure square footage for quartz countertops.

What You Need to Measure Square Footage

  • Measuring tape
  • Pen and paper
  • Calculator

Make sure to use a metal measuring tape for accuracy. You will also need a pen and paper to note down the measurements and a calculator to add up the total square footage.

Step-by-Step Guide

1. Measure Length and Width

  • Start by measuring the length and width of each section of the countertop. Take the measurements in inches from edge to edge.
  • For L-shaped counters, measure each section separately.
  • Note down the length and width measurements for each section.

2. Multiply to Get Square Inches

  • Multiply the length by the width to get the area in square inches for each section.
  • For example, if one section is 60 inches long and 25 inches wide:
  • 60 x 25 = 1,500 square inches
  • Do this calculation for each section.

3. Convert to Square Feet

  • Next, convert the square inches to square feet by dividing by 144.
  • 144 square inches = 1 square foot
  • For our example:
  • 1,500 square inches / 144 = 10.4 square feet
  • Round up to the nearest whole number, so this section is 11 square feet.
  • Repeat this for each section to get the total square footage.

4. Add Sections Together

  • Add together the square footage of each section to get the total countertop area.
  • For example:
  • Section 1: 11 sq ft
  • Section 2: 15 sq ft
  • Section 3: 8 sq ft
  • Total: 11 + 15 + 8 = 34 square feet

This gives you the total square footage to order materials and get accurate pricing.


  • For corners and irregular shapes, break them down into smaller rectangles to measure.
  • If replacing existing countertops, confirm measurements by physically measuring the existing counters.
  • Include overhangs in your measurements if you want them.
  • For islands, measure all exposed sides.
  • Use a threshold or straightedge as a guide when measuring longer spans.
  • Have two people measure for accuracy on large surfaces.
  • Take pictures of each section’s measurements for reference.


How do I calculate square footage for an L-shaped countertop?

For L-shaped countertops, take measurements for each section separately. Measure the length and width of the longer part, then the length and width of the shorter part. Calculate square inches and square feet for each section. Then add them together for the total.

Should I include backsplashes and overhangs?

The square footage measurement should only include the countertop surface area. Do not include backsplashes or overhangs unless you specifically want to count those areas.

What if my countertop has an irregular shape?

For odd-shaped sections, break them down into smaller regular rectangles to measure length and width. Add these smaller sections together to get the total area.

How accurate do my measurements need to be?

It’s important to measure accurately within 1/8th of an inch. Small inaccuracies can lead to the countertop not fitting right during installation.

Should I measure before or after old countertops are removed?

Whenever possible, measure after the old countertops are removed. This allows you to measure just the cabinet and ensures accuracy.

What tools do I need to measure countertops?

Have a 25-foot metal measuring tape, pencil, paper, and calculator on hand. Measure multiple times for accuracy. A threshold or straightedge can also help span longer sections.


Measuring square footage for quartz countertops involves taking length and width measurements, converting to square inches, then square feet for each section. Add all sections to get the total area. Accurately measuring the countertop area is key for purchasing the right amount of materials and budgeting the project. Follow these steps closely and double check your math to get it right. Taking precise measurements will ensure your beautiful new quartz countertops are installed perfectly.