Calculators
Chamfer Calculator
From one chamfer leg and its angle, get the other leg and the chamfer face length — for 45° and any other angle, in inch or mm.
Last verified: 2026-07-09
A chamfer is a right triangle across a corner. Give one leg (the width along a face) and the chamfer angle to get the other leg (the depth) and the face length. A 45° chamfer has equal legs — the familiar "0.02 × 45°" callout.
Units
Other leg
0.02in
Face length
0.0283in
A chamfer is a right triangle: other leg = leg × tan(angle); face length = leg ÷ cos(angle). A 45° chamfer has equal legs (a “0.02 × 45°” chamfer) with a face of leg × √2.
Frequently asked
- What does a 45° chamfer × 0.02 mean?
- Both legs are 0.02 (the width along the face and the depth into the part are equal, because tan 45° = 1). The angled face itself is 0.02 × √2 ≈ 0.0283 long.
- How is the angle measured?
- Here the angle is taken from the leg you enter. For an unsymmetrical chamfer, enter the known leg and the angle between the chamfer face and that leg.
Sources
- Right-triangle trigonometry (other leg = leg × tan θ; face = leg ÷ cos θ)