This guide breaks down the cost of installing epoxy flooring in your garage, basement, or other space. Costs depend on resin type, floor size, and more.
Epoxy Calculator: How Much Epoxy Do I Need?
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An epoxy flooring cost calculator helps you measure your garage floor or countertop area to determine how many gallons you need for complete coverage.
Professional epoxy floor installation costs $750 to $5,716, with average costs around $2,514, while epoxy countertops range from $2,000 to $7,000 for your project.
Calculate the volume of your space in cubic inches by multiplying length, width, and depth, then divide by 231 to find the gallons needed.
Hiring a local epoxy flooring professional takes the guesswork out of measuring and ordering, ensuring you get the right thickness and complete coverage for your floors.
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Epoxy is a popular choice for flooring and countertops because when the liquid coating dries, it is incredibly durable. But how much epoxy do you need for your project? Our calculator will help you determine how many gallons you need so you don’t have to pause the project and run out for more supplies.
How Much Epoxy Is Needed for Garage Floors and Countertops
An epoxy floor costs an average of $2,514, and you can use the following table to estimate the number of gallons you’ll need to complete your project based on the size of your garage and how thick you want the epoxy to be.
| Garage Size (Feet) | Thickness (Inches) | Amount of Epoxy (Gallons) |
|---|---|---|
| 12x20 | 0.125 | 18.7 |
| 12x20 | 0.25 | 37.4 |
| 12x20 | 0.375 | 56.1 |
| 18x20 | 0.125 | 28 |
| 18x20 | 0.25 | 56.1 |
| 18x20 | 0.375 | 84.1 |
| 32x22 | 0.125 | 54.9 |
| 32x22 | 0.25 | 109.7 |
| 32x22 | 0.375 | 164.6 |
Epoxy countertops cost between $2,000 and $7,000 for professional installation. But you can save quite a bit of money by calculating the amount of epoxy you need and completing the project yourself. That said, it’s better to buy too much epoxy and return the unopened containers rather than not have enough on hand to complete the project. Use the following table to estimate the amount of epoxy you’ll need to coat your countertops.
| Countertop Size (Square Feet) | Thickness (Inches) | Amount of Epoxy (Gallons) |
|---|---|---|
| 10 | 0.125 | .78 |
| 10 | 0.25 | 1.6 |
| 10 | 0.375 | 2.3 |
| 25 | 0.125 | 1.9 |
| 25 | 0.25 | 3.9 |
| 25 | 0.375 | 5.8 |
| 35 | 0.125 | 2.7 |
| 35 | 0.25 | 5.4 |
| 35 | 0.375 | 8.2 |
| 45 | 0.125 | 3.5 |
| 45 | 0.25 | 7 |
| 45 | 0.375 | 10.5 |
How to Measure for Epoxy
Measuring for epoxy or epoxy paint requires knowing the volume of the space in cubic inches. Start by measuring the length, width, and depth of the room or project area in inches. Multiply those figures together to get the volume in cubic inches. Then divide the volume by 231 to determine how many gallons of epoxy you need. Use the following formula to determine how much epoxy to buy:
Epoxy Needed (in gallons) = Volume (in cubic inches) / 231
Who to Hire to Apply Epoxy
Photo: Doralin Tunas / iStock / Getty Images Plus / Getty Images
If you want to take on a DIY project, learning how to epoxy countertops or a garage floor is a good one to do yourself. You can even get DIY epoxy kits with all of the supplies you need to complete the project. If you want to hire a local epoxy flooring professional, they can make recommendations for the brand to use and how thick the epoxy should be. Then they’ll measure the space and order enough epoxy to make sure the floor or countertops are coated appropriately.
Frequently Asked Questions
Epoxy flooring services reviews from real Angi homeowners in Columbus, OH
5.0★ avg. • 1 total reviews
- Jena P.
This company does it right. Firstly, I want to say that Landan was a joy to work with. He was so kind, transparent, and had everything under control. His entire team showed up ready to work and they were all very respectful of the fact that we were in an office space. A little backstory – we...
Krumlauf Floors - Sue B.
Terrible experience. Walls/trim/floors/cabinets/doors all have drip marks, overspray, etc. Tiling at the fireplace had to be redone by another vendor due to incorrect and shoddy install by Profect. Contractor had his children in our house while he was on site without prior authorization or...
Profect painting & exteriors - Gina M.
Finished Basements Plus was wonderful from beginning to end! First, they came out quickly for an estimate. I had 4 estimates and theirs was by far the best. (2 of the estimates were more than $20K higher than for the exact same work). Beyond their fair pricing, the work was excellent. They...
Finished Basements Plus Inc. - Tom B.
AFS was excellent from start to finish. Jess, the sales associate, was fantastic...very knowledgeable and very professional. The installation crew was excellent. I couldn't be more pleased with the process. Best of all, my new floor looks fantastic!
America's Floor Source - Bob T.
We were having 2”x 2” tile installed . There was a small installation error and the new additional replacement tile was from a different lot and the colors didn’t match. Joe assured us that he would rectify everything , which he did without hesitation. We decided to go with the 18” x 36” tile...
CarifaTile - Bob T.
We hired Jim to replace our hardwood floors with new hardwood. He and his helper Jerry did a fantastic job. Their work ethic is impeccable!! We would highly recommend McColl Floors!
- Rick B.
This was our second experience with The Waterworks and both times have been Exceptional! This time, Michael P. was our technician. He arrived on time, was super professional and respectful of our home and he even wore booties, a face mask, gloves and protected out kitchen floors with drop...
The Waterworks - Dirk W.
Chaz, the owner, was very responsive and he communicated with us throughout the entire process. The overall cost was in the middle compared to the three estimates we received. The installation crew was very professional. Chaz was considerate enough to send a crew back to our home to repair...
Unique Hardwood Floor LLC - Paul C.
After our last tile guy took 3 weeks and all the tiles were uneven it was so great to find a true tile installer that takes pride in his work. Flooring Solutions is A quality, on time, and keep the job area clean. Will use over and over.
Flooring Solutions - Mike T.
Despite written and verbal direction they installed floor in wrong room.
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