Engineering
Mechanical and structural calculators
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Steel Weight Calculator
Round/flat/square bars
Pipe Weight Calculator
OD, thickness, length
Bolt Size Calculator
Standard bolt reference
Wire Gauge Calculator
AWG diameter and area
Material Density Calculator
Common material densities
Torque Calculator
T = F × r
Thread Calculator
Metric thread pitch
Bend Allowance Calculator
Sheet metal bending
Tolerance Calculator
Fits and tolerances
Engineering Unit Converter
Pressure, force, torque units