CNC Press Brake Tonnage Calculator
Quickly estimate the required press brake tonnage, select the right tooling, and plan your bends with confidence. Enter your material, thickness, bend length, and angle to get accurate results tailored to your job.
This calculator serves as a guide based on the calculated V-Die Size.
Contact us to discuss other V-Die sizes that may be suitable for your needs.
Key / Legend
Bend Length (mm): Length of the bend line (per bend). Longer lengths increase required force.
Bend Angle (°): Angle of the bend measured on the inside (0–180°). Affects bend allowance and springback.
Required Force / Tonnage: Calculated bending force shown as kN and approximate metric tonnes (tonne-force). This is the estimated press capacity needed for the entered parameters.
Bend Allowance (BA) (mm): The length of material consumed by the bend along the neutral axis — used to calculate flat pattern length.
Bend Deduction (BD) (mm): Value used to convert from flange lengths to flat length: BD = 2×(t + R) − BA.
Recommended V-Die Size (mm): Suggested die width based on thickness and bending use-case.