Free online calculators for press brake tonnage, bend allowance, K-factor, minimum bend radius, and plate roll blank size — plus a complete A-Z glossary of sheet metal and CNC fabrication terms.
Four free tools, each on its own page with the formula, worked examples and FAQs. All calculations use metric units (mm, tonnes).
Required bending force in tonnes for air bending, with safety margin and recommended die opening.
Open calculator →Bend allowance, bend deduction and outside setback using the K-factor method.
Open calculator →Smallest safe inside radius by material, thickness and grain direction, with R/t ratio.
Open calculator →Flat blank developed length for rolled cylinders, half and quarter arcs.
Open calculator →Definitions for common terms used in sheet metal fabrication, CNC press brake operation, fiber laser cutting, and plate rolling.
Rise Tek's Canadian team can help with material selection, bending calculations, and machine recommendations for your specific application.