Saw Kerf Calculator
Find how many identical finished pieces fit in one stock length after the material removed by the saw blade is included.
84.75 in used before separating the final offcut.
What the calculator returns
Maximum whole pieces and the length consumed before a terminal offcut is separated.
Method and limits
The effective-length form correctly accounts for one fewer internal kerf than pieces. If eight parts fit, seven gaps separate those finished pieces. Separating a reusable remainder after the eighth part may require one additional cut.
Blade labels are only a starting point. Tooth set, runout, alignment, and the cutting process can change the actual slot, so use a measured conservative value for important plans.
Saw Kerf Calculator questions
What is saw kerf?
Saw kerf is the width of material removed by a complete cutting pass. Measure the actual blade, machine, and material combination when an exact fit matters.
Why does the formula add one kerf to stock length?
The effective-length form produces the n − 1 internal gaps needed between n finished pieces when the existing stock ends form the outside boundaries.