Metal & Fabrication calculators
Layout and forming calculators for welders, fabricators, and machinists.
- Bolt Circle Coordinates CalculatorEach hole is at X = R cos(θ), Y = R sin(θ), where R is half the bolt circle diameter and θ steps by 360° ÷ number of holes.Inputs: Bolt circle diameter, Number of holes, Start angle
- Sheet Metal Bend Allowance and K-Factor CalculatorBend allowance = bend angle (radians) × (inside radius + K-factor × thickness), and the flat length is the two outside leg lengths minus the bend deduction.Inputs: Material thickness, Inside bend radius, K-factor
- Weld Filler Metal Volume and Weight CalculatorWeld metal weight = weld cross-section × length × density; a fillet weld's cross-section is leg² ÷ 2, and you buy that weight divided by the process's deposition efficiency.Inputs: Joint, Fillet leg size, Plate thickness
In the works
- Steel plate and bar weight