Press brake
Press Brake Calculators
Estimate only: actual tonnage and radius depend on material tensile, grain direction, springback, and tooling condition. Verify machine capacity and tooling load limits before operation.
Estimate air-bending tonnage, V-die opening, produced inside radius, and minimum flange from material and thickness. Use the tonnage calculator first to size machine and tooling, then the V-die opening calculator to confirm flange and radius are workable. All values are screening estimates for planning; verify against the press brake's rated tonnage, the punch and die load ratings, and the supplier's tooling chart before forming.
Static reference
Common V-die and tonnage combinations
Swipe table horizontally for more columns.
| Gauge | Thickness | Recommended V | Inside radius estimate | 48 in bend tonnage |
|---|---|---|---|---|
| 20 ga | 0.0359 in / 0.912 mm | 0.2154 in | 0.0345 in | 13.76 tons |
| 16 ga | 0.0598 in / 1.519 mm | 0.3588 in | 0.0574 in | 22.92 tons |
| 12 ga | 0.1046 in / 2.657 mm | 0.6276 in | 0.1004 in | 40.1 tons |
| 10 ga | 0.1345 in / 3.416 mm | 1.076 in | 0.1722 in | 38.67 tons |
Interactive calculator
Press Brake Tonnage Calculator
Tons per foot5.73 tons/ft
Total tonnage22.92 tons
Material multiplier1x
Press tools