Tool · Linear cutting
Miter cut calculator
Set the angle at each end of a part and the width of your stock. The calculator adds the length each angled end takes, lays every cut out on your sticks, and shows the drop worth keeping. Free, no sign-up.
Your cut plan
Shows up here, bar by bar.
Enter your stock and parts, then press Plan my cuts. You'll see every cut, the drop worth keeping, and the scrap, before the saw starts.
How it works
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01
Set the stock's width
Under Miter cuts, type the width of your moulding, trim or profile. It sets how much length each angled end takes.
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02
Give each part its angles
Type each part's length at its short side, the inside of a frame, then the angle at each end: 90 is square, 45 a frame corner.
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03
Plan the cuts
Press Plan my cuts. Each part takes its length and its angled ends from the stock. Read each stick's cuts in order, with the drop left at the end.
Miter cut calculator questions
How much length does a miter take?
Each angled end adds the stock's width divided by the tangent of its angle. A 45° end adds the full width, so a 16″ side on 1½″ moulding, mitered at both ends, takes 19″ of stock before kerf.
Which angle do I type?
The angle between the cut and the stock's edge, so 90 is square and a frame corner is 45. A miter saw's scale reads from square, so a cut the saw calls 22.5° is 67.5 here.
Do opposite miters share stock?
No. Each angled end takes its full length from the stock, so two miters cut back to back don't share material, and no part comes out short.
Can I send the cuts to a saw stop?
On the Bench plan, the Saw file tool downloads each bar's cuts as a CSV with a length column and two angle columns, as the cut list rules in TigerStop's TigerSaw manual ask.
Is it free?
Yes. Miter cuts are on every plan, and here they need no sign-up.