How the Saw Kerf Calculator Works
Each finished piece consumes its target width, while every cut between pieces removes additional material equal to the blade kerf. The calculator determines the largest whole number of pieces that can fit.
Why Kerf Matters
Ignoring even a small blade kerf can cause a cut list to exceed the available board width. The effect becomes larger as the number of cuts increases.
Formula
For multiple equal pieces, material usage is approximately: number of pieces × piece width + number of cuts × kerf.
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Frequently Asked Questions
What is saw kerf?
Kerf is the width of material removed by the saw blade during a cut. The actual kerf can differ slightly from the nominal blade thickness.
How do I account for kerf when ripping a board?
Each cut consumes the width of the saw kerf. The calculator includes that lost material when determining how many full-width pieces fit in the stock.
Is blade thickness the same as kerf?
Not always. Tooth set, blade geometry and runout can make the actual cut wider than the blade body.
How many 3.5-inch boards fit in an 11.25-inch board?
The result depends on saw kerf. Enter 11.25 inches for stock width, 3.5 inches for desired piece width and your actual blade kerf to calculate the yield.
Does the calculator include trimming waste?
No additional trimming allowance is automatically included. Enter a reduced usable stock width if you need to joint or trim the board first.