Links to some reference calculators

Lab Temperature

Convert Flow

Shaft Calc

Shaft ANSI Fits

Cylindrical thick-wall Calc

Cylindrical Press-Fit Calc

Slot in Groove Cal

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