Backsplash Tile Calculator
Tile and grout for a kitchen backsplash.
Enter your values
Enter the counter run length in ft.
Enter the backsplash height in in.
Enter the window/opening area in sq ft.
Enter the single tile area in sq in.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Net backsplash area
- 15 sq ft
- Gross area
- 21 sq ft
- Tiles needed (10% waste)
- 297
- Grout needed (est.)
- 6 lb
Quick answer
Backsplash area is counter length times backsplash height, minus any window openings.
net area = (length x height) - openings
At a glance
| What it does | Tile and grout for a kitchen backsplash. |
|---|---|
| Category | Home & DIY |
| Inputs needed | Counter run length, Backsplash height, Window/opening area, Single tile area |
| Main output | Net backsplash area |
| Formula | net area = (length x height) - openings |
| Cost | Free — no sign-up, no download |
How to use the Backsplash Tile Calculator
- 1Measure the total counter run and desired backsplash height.
- 2Subtract any window or large outlet cutout areas.
- 3Use the net area to buy tile and grout with 10% extra for cuts.
Inputs explained
- Counter run length(ft)
- Enter the counter run length in ft.
- Backsplash height(in)
- Enter the backsplash height in in.
- Window/opening area(sq ft)
- Enter the window/opening area in sq ft.
- Single tile area(sq in)
- Enter the single tile area in sq in.
Worked example
Using the values the calculator loads with:
Inputs
- Counter run length14 ft
- Backsplash height18 in
- Window/opening area6 sq ft
- Single tile area8 sq in
Results
- Net backsplash area15 sq ft
- Gross area21 sq ft
- Tiles needed (10% waste)297
- Grout needed (est.)6 lb
Frequently asked questions
Should I subtract outlets?
Small outlets are usually ignored, but large windows or ranges should be subtracted.
How much grout do I need?
Roughly 0.3-0.5 lb of grout per sq ft for standard joints, more for wide joints.
What do I need to enter into the Backsplash Tile Calculator?
Just 4 values: counter run length, backsplash height, window/opening area, single tile area. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Backsplash Tile Calculator work out the answer?
Backsplash area is counter length times backsplash height, minus any window openings. It applies the formula net area = (length x height) - openings and shows the working so you can check each step by hand.
Is the Backsplash Tile Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.