How to Measure Countertops: A Comprehensive Guide for Accurate Measurements

Comprehensive Pre-Installation Guide for Countertops

When it comes to remodeling your kitchen or bathroom, one crucial step is accurately measuring your countertops. Proper measurements are essential for determining the amount of material needed and estimating the cost of your project. In this comprehensive guide, we will walk you through the process of measuring countertops, providing you with valuable tips and insights to ensure accurate measurements. Whether you’re a DIY enthusiast or working with a professional, these guidelines will help you get the job done right.

Introduction to Guide for Accurate Countertop Measurements

Accurate measurements are crucial when planning a countertop installation or renovation. Whether you’re opting for granite, quartz, or any other material, precision is key for a seamless fit and a successful project. By following the steps outlined in this guide, you’ll be able to provide the necessary measurements to your countertop fabricator, ensuring a smooth and efficient process.

Tools Needed for Measuring Countertops

Before you begin measuring your countertops, gather the necessary tools to ensure accurate measurements. Here are the tools you’ll need:
  • Tape measure: A reliable tape measure is essential for obtaining precise measurements.
  • Pen and paper: Keep a pen and paper handy to record your measurements and make notes.
  • Calculator: A calculator will come in handy for performing calculations to determine square footage and other measurements.
How to Measure Countertops

Preparing for Measurement

Before you start measuring, it’s important to prepare by drawing a rough sketch of your countertop layout. This sketch will serve as a reference for recording your measurements accurately. Use a piece of graph paper or any plain paper if graph paper is not available.

Drawing a Rough Sketch

To create a rough sketch of your countertop layout, follow these steps:

  • Start by drawing the shape of your countertop space on the paper. Include any backsplash areas in your drawing.
  • Make sure to include spaces for sinks, cooktops, and other fixtures. These areas should not be excluded from the measurement as they are part of the entire countertop.
  • Use your tape measure to measure the length of the countertop from wall to wall. Write down the length on your scale drawing or piece of paper.
  • Measure the depth of the countertops from the wall. Keep in mind that the standard countertop depth is usually around 25.5 inches for granite countertops.
  • For custom or unusually-shaped countertops, refer to example diagrams provided by your countertop fabricator for guidance on recording measurements accurately.

Measuring Straight Countertops

When measuring straight countertops, follow these steps to ensure accuracy:

  • Using your tape measure, measure the length of the countertop along the outside edge where it meets the wall. Write down the measurement in inches.
  • Repeat the measurement at least twice to ensure accuracy.
  • Measure the depth of the countertops from the wall, keeping in mind the standard countertop depth of 25.5 inches. This measurement will help determine the overhang from standard cabinets.
  • If you have additional sections or areas of the countertop, measure each section separately and record the measurements.

Recording Measurements

After taking the measurements, record them on your scale drawing or piece of paper. Ensure that all measurements are clearly labeled and easily understood. Double-check your measurements for accuracy before proceeding to the next step.

Considering Sink and Cooktop Areas

When measuring straight countertops, some homeowners mistakenly exclude the sink or cooktop areas from the measurement. However, it is important to include these areas as the cutouts are done in the entire countertop. By excluding them, you would not have an accurate measurement of the total countertop space.

Measuring Odd-Shaped Countertops

Not all countertops have a standard rectangular shape. Some may have unique configurations, such as corner sinks or ledges. When measuring odd-shaped countertops, follow these guidelines:

  • Measure the center section of the countertop as if it were a square piece. Measure the length and width of the center section and record the measurements.
  • For curvy or irregular shapes, measure from the widest point to determine the width. Measure the length of the curved section and record the measurements.
  • Use your best judgment to measure odd-shaped countertops, ensuring that you capture the overall dimensions accurately.

Calculating Square Footage

To determine the square footage of your countertops, you’ll need to perform some calculations based on your measurements. Here’s how to calculate the square footage:

  • Multiply the length and width of each section of the countertop.
  • Add together the measurements of all sections to obtain the total square inches.
  • Divide the total square inches by 144 (the number of square inches in a square foot) to obtain the square footage.
  • Round up the final measurement to the nearest whole number.

Additional Considerations

While measuring your countertops, there are a few additional factors to consider. These factors will help you plan your project more effectively.

Backsplash Measurement

If you plan to have a backsplash made from the same material as your countertops, remember to include it in your measurements. Plan for an extra 4-inch-wide section across the length of the countertop for the backsplash. If you only need a fraction of a slab for your countertops, you can use the remaining portion for the backsplash.

Average Slab Size

It’s important to be aware of the average slab size when planning your countertop project. Most slabs measure around 120×55 inches, which is approximately 41 square feet. However, some stone types come in jumbo slabs as well. Knowing the average slab size helps you determine the number of slabs required for your project and budget accordingly.

Labor and Fabrication Costs

When budgeting for your countertop project, remember to consider labor and fabrication costs. Labor is typically calculated based on the square footage of your finished countertop. Additionally, special edges, curves, undermount sinks, and backsplashes may incur additional costs. It’s important to discuss these details with your countertop fabricator to ensure accurate pricing estimates.

Professional Digital Measurements

While you can measure your countertops yourself, it’s recommended to schedule a professional digital measurement for the final countertop cut. Countertop fabricators, such as Apex Countertops Kitchen and Bath LLC, often offer this service to ensure precise measurements and a seamless installation. A professional technician will visit your home to take digital measurements of the countertop area before cutting and installing the countertops. This eliminates any potential errors and ensures a perfect fit.


Accurate measurements are crucial for a successful countertop installation or renovation project. By following the steps outlined in this comprehensive guide, you can confidently measure your countertops and provide accurate information to your countertop fabricator. Whether you have straight or odd-shaped countertops, proper measurements will ensure a seamless fit and a beautiful end result. Remember to consider additional factors such as backsplash measurement, average slab size, and labor costs to plan your project effectively. With precise measurements and careful planning, you’ll be on your way to achieving the kitchen or bathroom of your dreams.