Free CNC Machining Calculators
Browser-based calculators for sheet metal forming and milling operations. All calculations run locally — no data is transmitted or stored.
Sheet Metal
Press Brake Tonnage Calculator
Calculate required press brake tonnage for air bending. Supports 9 materials, custom tensile strength, and automatic V-die sizing. Includes 20% safety margin.
Open calculator →Cutting Tools
Chip Thinning & RCTF Calculator
Calculate the radial chip thinning factor, adjusted feed per tooth, feed rate, and material removal rate for High Efficiency Milling (HEM/trochoidal) operations.
Open calculator →About These Calculators
All calculators run entirely in your browser. No data is sent to any server, no account is required, and no cookies are set by the calculator pages. Formulas are based on standard industry references (Machinery's Handbook, ISO standards, manufacturer application data). Results should always be verified against your specific machine specifications and confirmed with a test piece before production. See our terms of use for the full disclaimer.