End Grain Cutting Board Calculator: Board Feet & Cost

This calculator works out the board feet of lumber you need for an end grain cutting board, plus the total cost based on the price you pay per board foot. You enter the board’s finished length, width, and thickness, along with the lumber price, and it returns the volume in board feet and the estimated material cost.

Formula

The formula for board feet is:

Board Feet = (Length × Width × Thickness) / 144

Where Length, Width, and Thickness are all in inches. The divisor 144 converts cubic inches to board feet (1 board foot = 144 cubic inches). For an end grain board, this gives the total volume of the finished board. The cost is then simply Board Feet × Price per Board Foot.

Worked Example

Using the default values from the calculator (Length = 18 in, Width = 12 in, Thickness = 1.5 in, Price = $8/bf):

1. Multiply: 18 × 12 × 1.5 = 324 cubic inches.
2. Divide by 144: 324 / 144 = 2.25 board feet.
3. Cost: 2.25 × $8 = $18.00.

The calculator shows 2.25 bd ft and $18.00, matching the hand calculation.

What Is an End Grain Cutting Board?

An end grain cutting board is made by gluing together blocks of wood so that the end grain (the cut ends of the wood fibers) faces upward as the cutting surface. This is different from edge grain or face grain boards, where the long sides of the wood strips form the surface. End grain boards are prized by chefs because the knife blade cuts between the fibers rather than across them, which is gentler on knife edges and makes cuts close up after use. They also tend to be more durable and self-healing in that respect, but they require more wood and labor to produce.

The calculator above helps you estimate the volume of the finished board. However, when building an end grain board, you need to account for waste during cutting and glue-up. The finished dimensions are smaller than the sum of the raw lumber because saw kerfs (the width of the saw blade cut), planing, and sanding remove material. Typically, you should add 10–20% to the calculated board feet to cover waste, depending on your skill and the complexity of the pattern.

How to Use the Calculator

Enter the final dimensions you want for the board (length, width, thickness) and the price you pay per board foot of lumber. The calculator returns the volume of the finished board and the cost of that volume. If you are buying rough lumber, remember that you will lose material to milling and cutting, so increase the board feet by your estimated waste factor. For example, if you need 2.25 bf finished and expect 15% waste, buy about 2.6 bf.

If you are using a kit or pre-milled wood, the waste is lower, but still present. The calculator does not include the cost of glue, finish, or other supplies.

Choosing the Right Wood

Not all wood is suitable for end grain cutting boards. Hardwoods like maple, walnut, cherry, and oak are common choices because they are dense and durable. Softwoods like pine or fir are too soft and will show knife marks quickly. Also, avoid toxic woods like yew or oleander. When buying lumber, you can choose between domestic hardwoods (often cheaper) and exotic woods like teak or wenge (more expensive and sometimes harder to work). The calculator’s price input lets you compare costs for different species.

Another consideration is the orientation of the grain. For end grain boards, you want the wood to be well-seasoned and stable to minimize movement after assembly. Quarter-sawn lumber is often preferred because it expands less across its width, but it is more expensive. The calculator doesn’t account for these factors, but they affect the final cost per board foot.

Common Mistakes and How to Avoid Them

• Not accounting for waste: As mentioned, finished dimensions are smaller than raw lumber. Always add 10–20% waste.
• Mixing up board feet and cubic feet: Board feet is a lumber industry unit (144 in³), not the same as a cubic foot (1,728 in³). The calculator uses board feet.
• Ignoring thickness changes: If you plane the board after glue-up, the thickness decreases. Use the final thickness in the calculator.
• Forgetting the cost of offcuts: When you cut strips and then blocks, you generate offcuts that may not be usable. Factor that into your waste.

Cost Comparison: End Grain vs. Edge Grain

End grain boards require more lumber per square inch of surface because the thickness is built up from blocks. For example, a 1.5-inch-thick end grain board needs blocks that are 1.5 inches tall, which means you need wood that is at least 1.5 inches thick in one dimension. Often you have to glue up thinner pieces to achieve that thickness, increasing waste. Edge grain boards, by contrast, can be made from thinner stock and are less wasteful. As a result, end grain boards typically cost 30–50% more in raw materials for the same size. The calculator helps you see that difference by adjusting the thickness and price.

Frequently Asked Questions

How much waste should I add for an end grain board?

Add 10–20% to the calculated board feet. Beginners should use 20%, while experienced woodworkers can get away with 10% if they plan carefully. The waste comes from saw kerfs, planing, and trimming edges to square.

Can I use the calculator for any wood species?

Yes, the calculator only computes volume and cost based on the price you enter. It does not account for species-specific properties like hardness or toxicity. Always check that the wood is food-safe and suitable for cutting boards.

What is the difference between board feet and square feet?

Board feet measure volume (length × width × thickness in inches divided by 144). Square feet measure area (length × width in feet). For a cutting board, you need volume to know how much wood to buy.

Do I need to include the price of glue and finish?

No, the calculator only estimates lumber cost. Glue, finish (like mineral oil or beeswax), and sandpaper are additional expenses. Typically, they add a few dollars to the total.

Why is my end grain board more expensive than a similar edge grain board?

Because end grain requires more wood and more waste. The thickness is built from blocks, and you need thicker stock or lamination, which increases the board feet needed. The calculator will show that higher volume.

Can I calculate the cost for a board with a pattern like a checkerboard?

Yes, but the calculator only gives the total volume. For a pattern, you need to plan the layout and calculate the volume of each wood species separately. You can run the calculator multiple times with different prices and dimensions for each species.

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in l | Board Length | in | 18 | 0 | 120
in w | Board Width | in | 12 | 0 | 120
in t | Board Thickness | in | 1.5 | 0 | 6
in p | Price per Board Foot | $ | 8 | 0 | 1000
out bf | Board Feet | bd ft | (l * w * t) / 144 | 2
out cost | Estimated Cost | $ | bf * p | 2