Set Up Bending
Enter the bend angle in degrees, inside radius, material thickness, and K-factor. Metrik MFG treats the angle as the rotation through which the sheet is bent.
Bend Allowance Calculator
Calculate sheet-metal bend allowance from bend angle, inside radius, thickness, and K-factor.
Metrik MFG / BendingREADY
Bend Allowance Calculator
INPUTVALUEOUTPUT
Primary input01
Process setting02
Calculated output03
CALCULATION STATUSREADY TO CALCULATEEnter values below to generate results
STANDARD MODE
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Bend Allowance Calculator
Advanced Engineering
PRACTICAL CONTEXT
Using the result in real shop work
Bend allowance is the developed length attributed to the neutral bend region. It depends on bend-angle convention, inside radius, material thickness, and K-factor.
Where This Result Helps
Use it for flat-pattern development and for checking how radius, thickness, and K-factor affect developed length.
What Can Distort the Result
Confusing inside radius with outside radius, using a complementary included angle, or using a K-factor that does not match the actual material/tooling/process.
ENGINEERING METHOD
How the bending calculation works.
FORMULABA = (π ÷ 180) × A × (R + K × T).
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