Links to some reference calculators

Lab Temperature

Convert Flow

Shaft Calc

Shaft ANSI Fits

Cylindrical thick-wall Calc

Cylindrical Press-Fit Calc

Pressure Drop Cal

Cantilever Beam Cal

Stress Conversion Cal

Pressure Conversion

Byte Conversion

Circle Sector Area

Polygon Area

NPT Calculator

Coil Spring Design Calc

Stabilizer Calc

SAE AS568 O-ring Gland Calculator

UNC/UNF Bolt Calculator

Stub ACME Thread Geometry Calculator

Material Prop

Material Hardness