Machining & Manufacturing
42 free machining & manufacturing tools in the Calculators & Converters collection — every one runs in your browser with no signup and no uploads.
Sill Plate Anchor Bolt Layout Calculator
Calculate anchor bolt count, spacing, and edge distances per IRC rules
Boring Bar Deflection Calculator
Estimate boring bar tip deflection under cutting force for overhang ratios
Center Drill Depth Calculator
Calculate center-drill plunge depth to create the correct 60-degree center
3D Print Clearance & Fit Tolerance Calculator
Find the right gap for press-fit, slide-fit and loose-fit printed joints
Collet Runout Tolerance Calculator
Estimate total indicator runout (TIR) at the tool tip from collet specs
CNC Machining Cycle Time Estimator
Estimate rough CNC cycle time from toolpath length, feed rate, and rapids
Drill Feed & RPM per Material Calculator
Recommend drilling RPM and feed per revolution for any material and drill size
Filament Spool Remaining Calculator
Estimate grams remaining on a partly used spool from weight or coil diameter
Fillet Weld Size & Strength Calculator
Calculate the required fillet weld leg size to carry a given shear or tensile load
Fillet Weld Effective Throat Calculator
Calculate effective and theoretical throat size from leg size for any weld profile
First Layer Line Width Optimizer
Calculate optimal first-layer width and height for best bed adhesion
Hardness Conversion Calculator
Convert between Rockwell C (HRC), Brinell (HB), Vickers (HV), and tensile strength
Hardness Scale Conversion Chart
Convert between Rockwell, Brinell, Vickers, and tensile strength
Heat-Set Insert Hole Size Calculator
Get the correct boss hole diameter for heat-set threaded inserts
ISO Tolerance & Fit Calculator
Find hole and shaft limits for any ISO fit class and nominal diameter
Knurling RPM & Feed Calculator
Calculate spindle speed and feed for clean straight or diamond knurling
Lathe Taper Calculator
Calculate compound-slide angle or tailstock offset for any taper
Layer Height vs Print Quality Analyzer
Compare layer height options against nozzle diameter and print quality
MIG Wire Diameter Selector
Pick the right wire diameter for any MIG welding application and material thickness
Mortise & Tenon Sizing Calculator
Calculate tenon thickness, length, and cheek-glue area for structural joints
Nozzle Material Wear Life Estimator
Estimate brass nozzle wear life from abrasive filament use hours
Pipe Bevel & Saddle Layout Calculator
Generate the wrap-around cut template for pipe saddle and branch joints
Plywood Sheet Optimizer
Lay out cut parts on the minimum number of sheets to cut cost and waste
Post Base Anchor Sizing Calculator
Select post base size and concrete anchor pattern for uplift and shear loads
Print Cooling Fan Curve Calculator
Map fan percentage to PWM duty cycle for your printer's part-cooling fan
3D Print Time Estimator
Rough print time estimate from object height, layer height, and print speed
RPM / SFM Calculator
Convert between spindle RPM and surface feet per minute for any cutter diameter
Shear Pin Design Calculator
Calculate shear pin diameter to fail at a target torque overload
Sheet Metal Bend Allowance Calculator
Calculate flat-pattern blank size from bend angle, radius, K-factor, and thickness
Shielding Gas Flow Rate Calculator
Determine the correct gas flow in CFH or L/min for MIG and TIG welding
Structural Bolt Pretension Torque Calculator
Convert required pretension to installation torque for A325, A490, and metric bolts
Theoretical Surface Finish (Ra) Calculator
Estimate theoretical surface roughness Ra from feed and nose radius
Lathe Thread-Cutting Gear Train Calculator
Find change-gear combinations to cut any thread TPI on a non-quick-change lathe
Thread Pitch Calculator
Convert TPI to pitch and back for inch and metric threads
Tooling Cost per Part Calculator
Amortize insert or end-mill cost over expected part count, with break-even
Top/Bottom Layer Count to Thickness
Convert top and bottom solid layer counts into total thickness in mm
Warping Risk Assessor
Assess warping risk for a print based on material, geometry, and settings
Weld Symbol Decoder
Decode AWS A2.4 weld symbols into plain-English joint instructions
Welder Duty Cycle Calculator
Check whether your welder can sustain a job's required on-time percentage
Welding Distortion Estimator
Estimate angular and longitudinal distortion for common weld joints
Welding Heat Input Calculator
Calculate arc energy input in kJ/mm or kJ/in for procedure qualification
Z-Offset First Layer Calculator
Calculate Z offset adjustment from first-layer squish measurements.