STATIC · ALL CALCS LOCAL · NO SERVER
Scheduling Tools
◆ Future Date Calculator
+1 wk +2 wks +3 wks +4 wks +6 wks +8 wks
◆ Days Between Dates
Select two dates above
◆ Project Duration Estimator
Enter project parameters above
◆ Time Zone Converter
Enter a date and select target zone
Unit Conversions
◆ Length
Enter a value above
◆ Pressure
Enter a value above
◆ Temperature
Enter a value above
◆ Torque
Enter a value above
◆ Weight / Force
Enter a value above
◆ Speed / Feed Rate
Enter a value above
Fasteners & Bolt Reference
◆ Bolt Size Lookup
SizeTPI / PitchMajor Ø (in)Major Ø (mm)Tap DrillDrill (mm)
◆ Torque Spec Calculator

Estimates torque for common grades. Starting point only — verify with engineering data.

Select options and calculate
◆ Drill Bit Size Reference
DesignationDecimal (in)mm
Machining Calculators
◆ RPM / Surface Speed
Enter values above
◆ Feed Rate (IPM / mm/min)
Enter values above
◆ Material Removal Rate
Enter values above
◆ Taper & Included Angle
Enter D, d, and L above
◆ Thread Pitch & Lead
Enter TPI or pitch above
◆ Bolt Circle / Hole Pattern
Enter BCD and hole count
Material Properties
◆ Materials Reference
Materiallb/in³Tensile (ksi)HardnessMachinability
◆ Metal Weight Calculator
Select shape and enter dimensions
◆ Recommended SFM Reference
MaterialHSS SFMCarbide SFMNotes
Aluminum600–10001000–3000Use coolant
Brass (free-machining)200–300400–600
Bronze80–150200–400
Cast Iron (gray)50–80200–400Dry or air
Copper100–200300–500Gums up
Steel 1018 (low-C)80–100300–600
Steel 4140 (alloy)50–80200–400
Stainless 30430–50100–200Flood coolant
Stainless 31625–4080–180Flood coolant
Titanium 6Al-4V20–4080–200Flood coolant
Hardened SteelN/A50–150CBN preferred
Delrin / Acetal400–600800–1200Sharp tools
Nylon300–500600–1000
Geometry & Trigonometry
◆ Right Triangle Solver

Enter any 2 known values (others auto-solve)

Enter any 2 known values
◆ Circle & Arc Calculator
Enter a value above
◆ Angle Converter (Deg / Rad / DMS)
Enter an angle in any field
◆ Sine Bar / Sine Plate
Enter sine bar length and angle
◆ Regular Polygon
Enter N and a known value
◆ Dovetail / Undercut Calculator

Measure with gauge pins to verify dovetail width

Enter angle, pin size, and dimensions