Countertop Square Footage Calculator: How Much Countertop Do I Need?
Get the right countertop measurement with this calculator
Countertops are measured by the square foot and include the overhang and backsplash.
The countertop overhang depends on the countertop location.
You can install laminate and butcher block countertops on your own
Call a professional if you want to install stone countertops.
A brand new set of countertops can give your kitchen or bathroom a whole new look. Getting accurate measurements is essential to receiving estimates for the cost of the countertop and figuring out what will work with your budget. Use this countertop square footage calculator to determine how much countertop you need for your project.
How to Calculate How Much Countertop You Need
Countertops are measured by the square foot. To determine countertop square footage, multiply the length and width of each section of countertop, making sure to account for the overhang and backsplash. Because countertops sit on cabinets, start by drawing a detailed diagram of the cabinets, including the location and measurements of anything that won’t be covered, like the stove and refrigerator. Make sure to include the sink and dishwasher area in the measurements.
Apply the following formula to each section of the countertop, and then add all the sections together.
Countertop Square Footage = Length (in inches) x Width (in inches) / 144
You’ll also have to determine where the seams will go, and this will be partly dependent on the shape of the countertop and the size of the slabs.
How to Measure for Countertops
At first glance, countertop calculations seem pretty straightforward, but there are other factors that you need to measure and then account for when you order the countertop material.
How to Measure for a Backsplash
The backsplash protects the wall behind the countertop from food and grease and makes the area easier to wipe down. The standard backsplash height is between 3 and 6 inches. To account for the backsplash, add the backsplash height to the countertop depth measurement. You can use the formula below to help:
Countertop Width = Cabinet Depth + Overhang + Backsplash Height
How to Measure for Overhang
Generally speaking, countertops come with an overhang—a certain amount of countertop that juts out from the cabinets. Accounting for this extra material will ensure you order the correct width. Use the table below to determine how much countertop overhang you should include in your measurements.
| Location | Overhang in Inches |
|---|---|
| Leading edge | 1 1/2–2 |
| Kitchen island | 12 |
| Raised bar top | 12 |
| Side edge | 1/8–1/4 |
| Against an appliance | 1/8–1/4 |
| Against a wall | None |
Who to Hire to Measure Countertops
Installing countertops can be a DIY job, but only if you’re installing laminate or wood ones where you can cut countertops on your own. You’ll still have to have the right tools and be confident in your measurement skills, but these materials are easier to install than granite, quartz, or marble. If you’re going the stone countertop route, you can hire a countertop installation pro who will come with the right tools and experience to get the job done.
Frequently Asked Questions
The average countertop square footage in a kitchen is 30 square feet, but that number varies widely depending on the size of the kitchen. Some smaller kitchens may only have one stretch of countertop or an L-shape. Larger kitchens can include an island or peninsula and more expansive countertops. When deciding what works best for your home, measure your kitchen countertop and make sure to include countertop cost calculations in your budget.
Countertop installation costs between $1,850 and $4,450—the average falls at just over $3,000. The total will depend on the countertop material and square footage. On the low end, porcelain and ceramic countertops can cost as little as $1 to $3 per square foot and up to $28 per square foot. Butcher block and marble countertops can cost $140 to $190 on the high end, and $15 per square foot for marble and $50 per square foot for butcher block on the lower end. Other materials range in cost, including quartz, acrylic, laminate, and concrete.
The most expensive countertop materials are marble and granite. These natural materials are very heavy and require specialized tools and knowledge to install. Their natural veins and flecks elevate the design and make a beautiful statement in the kitchen or bathroom. Because they’re natural, no two countertops will be the same.
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