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Grout Calculator: How Much Grout Do I Need?
No more guesswork
Get quotes from ceramic tile pros near you
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Get quotes from ceramic tile pros near you
No obligation · 100% free
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A grout calculator helps you figure out exactly how much grout your tile project needs based on tile size, joint width, and total area.
Grout costs $6 to $10 for a one-pound bag and $7 to $25 for five-pound bags, with larger 25-pound bags costing $15 to $35.
Your grout estimate depends on measuring tile length and width, joint width and depth, and the total square footage you plan to tile.
Hiring a local tile professional takes the guesswork out of grout calculations and ensures your tile installation turns out level, stable, and properly sealed.
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Grout may not be something you think about when you’re walking into your bathroom or kitchen, but if you’re planning a remodel or new installation and need to install tiles, grout is an important part of the installation process. This grout calculator helps you answer the question, “How much grout do I need?”
How Much Grout Is Needed for Tiles
Using the dimensions of your space, the size of the tiles, the gaps between the tiles, and the depth, you can refer to the following table to estimate how much grout you need for your project.
| Area (sq. ft.) | Tile Size (in.) | Joint Width (in.) | Joint Depth (in.) | Grout Needed (lb.) | Cost |
|---|---|---|---|---|---|
| 10 | 4x4 | 3/16 | 1/8 | 1 | $6–$10 |
| 20 | 4x4 | 3/16 | 1/8 | 2 | $7–$25 |
| 30 | 4x4 | 3/16 | 1/8 | 3 | $7–$25 |
| 40 | 4x4 | 3/16 | 1/8 | 4 | $7–$25 |
| 50 | 4x4 | 3/16 | 1/8 | 5 | $7–$25 |
| 60 | 4x4 | 3/16 | 1/8 | 5 | $7–$25 |
| 70 | 4x4 | 3/16 | 1/8 | 6 | $15–$25 |
| 80 | 4x4 | 3/16 | 1/8 | 7 | $15–$25 |
| 90 | 4x4 | 3/16 | 1/8 | 8 | $15–$25 |
| 100 | 4x4 | 3/16 | 1/8 | 9 | $15–$25 |
How to Calculate How Much Grout You Need
Calculating how much grout you need requires several steps. Use this formula to determine the amount of grout in pounds.
Grout needed = {[(tile width + tile length) x (joint width + joint depth) x 1.2] / (tile width x tile height)]} x total area in square feet
How to Measure for Grout
If you’re calculating grout quantities for your project, you’ll need to take several measurements. Here’s how to accurately measure for grout.
Measure the total area you’re going to tile in feet.
Measure the tile length in inches.
Measure the width of the tile in inches.
Measure the width of the joint or space between the tiles.
Measure the depth of the joint or the tile thickness.
Who to Hire to Calculate How Much Grout You’ll Need
Photo: RealPeopleStudio / Adobe Stock
Let’s face it—calculating how much grout you’ll need is complex. If you’re not a mathematician, it can be downright confusing. Not to mention, different types of grout, like epoxy vs. cement grout, have different properties that could impact how much grout you’ll need.
While you can simply over-purchase by going for a large, 25-pound bag of grout, the most economical way to calculate the right amount of materials for your project is to work with a professional, such as a shower grout contractor. Contact a tile contractor near you to accurately calculate the grout for your tiles.
Frequently Asked Questions
Ceramic tile services reviews from real Angi homeowners in Columbus, OH
4.6★ avg. • 42 total reviews
- 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 - Manoj K.
It was wonderful working with Yordy and his team. They were very professional and are experts in what they do. They have completed the work on time, with better quality and with in fairly reasonable price. We just started with backsplash work , but liking his work, we went on to provide...
Flooring Solutions - 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 - Stephanie S.
For several months I was looking for somebody to tile a wall in my master bath and move lighting fixtures, and could not find anybody who was responsive. I contacted Rowe through Home Advisor and within days they came by to assess the job and provide an estimate. The cost was very...
Rowe House Development - Timothy C.
It went very well! The end product was amazing and we keep getting a lot of compliments from friends! M&E were very professional and they made sure we were happy with the product before leaving. They met with us in our home and at the tile shop to make sure we were okay with our tile and...
M&E Remodeling - Kendrick V.
Involved an extensive bathroom remodel, including removing tub & installing walk in shower, new drywall, custome tile work to ceiling, plumbing, etc. Overall, job was done on time and on budget. Nick & his team were very professional and had high attention to detail. Quality was great. Highly...
Stamos Flooring and Remodeling LLC - Locke M.
Very pleased with the service and level of professionalism. Courteous and very unobtrusive in performing service. Unlike several other companies, Bradford Xteriors was willing to perform work on a three story home with a clay tile roof. <br />
Bradford Xteriors - Jeffrey B.
This company did a very good job on the brick wall and it looks just amazing. The staff was always professional and was practically OCD on how the bricks were stacked and how they were laid. Although it took longer than expected, I am willing to sacrifice time over perfection anyday. The...
My Handy Mate LLC Improvement & Remodeling - Gary D.
He did the tile work and he was good at it. He used other subcontractors for the rest of the work (like putting in the cabinetry) and they were okay but not great. He was a great guy! He was easy to work with and had a good eye for the detail of his work. There were a couple of things that I...
Brian Miller Custom Remodeling - Michael S.
I was very impressed with Miller Cantrell! I live in an old home in which the sewage line that runs from my home to the sewage system is a line of clay tile. These eventually collapse and need to be replaced - an expensive problem and sure to happen at the worst time. I told them that my...
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