# Board & Batten Layout > Calculate board and batten counts and spacing for a wall run quickly. **Category:** Math **Keywords:** board, batten, layout, siding, spacing **URL:** https://complete.tools/board-batten-layout ## How it works This tool operates on a straightforward logic. First, it calculates how many boards you'll need by dividing the total wall length by the board width, keeping in mind any overlaps. Next, it figures out the spacing for the battens based on the wall length and the number of boards you've determined. If there's any leftover wall length that doesn't fit a full board or batten, the tool adjusts the calculations to give you accurate results. ## Who should use this This tool is perfect for carpenters working on board-and-batten siding for homes, architects specifying materials for new buildings, and DIY homeowners tackling exterior renovations. Contractors managing multiple projects can also use it for quick material estimates and cost calculations. ## Worked examples Example 1: Imagine a homeowner wants to install board-and-batten siding on a 20-foot-long wall. Since the boards are 8 inches wide, we first convert the wall length to inches: 20 feet equals 240 inches. Dividing 240 inches by 8 inches gives us 30 boards. That means the boards will cover the entire wall, leaving no room for battens. So, in this case, the homeowner will need 0 battens. Example 2: Now, let’s say an architect has a wall that’s 15 feet long, using 6-inch wide boards and 3-inch wide battens. Convert the length: 15 feet equals 180 inches. Dividing 180 inches by 6 inches gives us 30 boards. These boards will fill the wall, so we need battens in between each board. That means we’ll need 29 battens (one less than the number of boards), spaced perfectly to cover the seams. If the desired spacing is 2 inches, these calculations will ensure a neat and even layout. ## Limitations Keep in mind, this tool assumes your wall is perfectly straight and doesn’t account for irregularities like windows or doors. It also doesn’t factor in situations where boards need cutting or special fitting. Precision depends on the input values, so rounding errors might crop up when converting measurements. Plus, potential waste from cutting or overestimating board lengths during installation isn’t included in the calculations. ## FAQs **Q:** How does the tool handle different board widths? **A:** You can input various board widths, and the tool will automatically adjust the calculations for board count and batten spacing. **Q:** Can the tool accommodate irregular wall shapes? **A:** This tool is designed for straight walls and doesn’t handle irregular shapes or features like windows, which require manual adjustments. **Q:** What if my wall length doesn’t evenly divide by the board width? **A:** The tool will show the number of full boards that fit within the wall length and point out any remaining space, which may need adjustments for proper installation. **Q:** Is there a maximum wall length the tool can process? **A:** Yes, the tool can handle wall lengths up to 100 feet. For lengths longer than that, you may need to make adjustments for practicality and material limitations. --- *Generated from [complete.tools/board-batten-layout](https://complete.tools/board-batten-layout)*