Pipe Velocity Calculator: Instant Flow Speed & Area
Calculate fluid velocity in a pipe from flow rate and diameter, with results in meters per second, feet per second, and cross-sectional area.
Sheet Metal Bend Allowance Calculator & Flat Pattern Tool
Calculate sheet metal bend allowance, setback, bend deduction, and total flat pattern length using thickness, bend radius, angle, and K-factor.
Countersink Depth Calculator: Precise Flush-Fit Results
Calculate the exact countersink depth for flush, recessed, or proud screw heads using head diameter, cutter angle, and material thickness.
Tap Drill Size Calculator for Inch and Metric Threads
Find the correct tap drill diameter for US inch or metric threads based on major diameter, pitch, and desired percent thread engagement.
Thread Engagement Calculator: Minimum Length & Strength
Calculate the minimum thread engagement length, thread count, and shear area needed for a bolted or tapped joint based on diameter, pitch, and material strength.
Bolt Preload Calculator: Torque-to-Clamp Force Estimator
Estimate bolt preload, clamp force, resulting stress, and percent of proof load from applied torque, bolt size, and nut factor.
Bolt Torque Calculator – Find Torque, Preload & Clamp Force
Calculate the correct bolt tightening torque, clamp force, and preload from bolt diameter, thread pitch, grade, and friction condition.
Weld Shrinkage Calculator: Estimate Distortion & Allowance
Estimate transverse shrinkage, longitudinal shrinkage, angular distortion, and cutting allowance for a weld joint before you cut and fit metal parts.
Groove Weld Volume Calculator: Estimate Metal & Weight
Calculate groove weld cross-sectional area, total volume, and estimated filler metal weight for single or double groove welded joints.
Fillet Weld Weight Calculator: Metal Weight & Length
Calculate fillet weld metal volume, weight, and total length from leg size, weld length, material density, and weld profile in metric or US units.