40 FREE TOOLS · ⚙
Engineering & manufacturing calculators
Estimate machining, materials, manufacturing and ideal engineering relationships.
Material stock & weight
Estimate mass, stock usage and raw-material spending from geometry.
Explore topic ↗10 calculatorsStress, strain & material response
Explore ideal nominal stresses and linear-elastic relationships.
Explore topic ↗8 calculatorsGears, belts & motion
Relate tooth counts, pitch dimensions and ideal motion ratios.
Explore topic ↗12 calculatorsMachining feeds, speeds & time
Translate entered cutting parameters into nominal motion and time estimates.
Explore topic ↗All engineering & manufacturing calculators
Steel Plate Weight Calculator
Estimate solid plate mass from dimensions and a supplied steel density.
Round Bar Weight Calculator
Estimate mass of a solid circular bar.
Square Bar Weight Calculator
Estimate mass of a uniform solid square bar.
Rectangular Tube Weight Calculator
Estimate material mass of a rectangular hollow tube.
Round Tube Weight Calculator
Estimate weight of a circular hollow tube from outside diameter and wall thickness.
Metal Ring Weight Calculator
Estimate metal washer or ring mass from annular geometry.
Angle Bar Weight Calculator
Estimate mass of an ideal equal- or unequal-leg angle section.
Sheet Material Cost Calculator
Estimate raw material cost from sheet geometry and a mass-based price.
Mass From Cross Section Calculator
Estimate a uniform section’s mass when its cross-sectional area is known.
Cut Stock Piece Count Calculator
Estimate full pieces available from one stock length including a repeated kerf allowance.
Tensile Stress Calculator
Find average tensile stress in a loaded net section.
Engineering Strain Calculator
Calculate dimensionless engineering strain from elongation and original length.
Youngs Modulus Calculator
Estimate Young’s modulus from an elastic stress-strain pair.
Axial Elongation Calculator
Estimate elastic length change of a uniform axially loaded bar.
Shear Stress Calculator
Find average shear stress over an entered area.
Bearing Stress Calculator
Estimate nominal pin or bolt bearing stress on a plate.
Poissons Ratio Calculator
Calculate Poisson’s ratio from transverse and longitudinal strain.
Shear Modulus From Youngs Modulus Calculator
Relate shear modulus to Young’s modulus and Poisson’s ratio.
Thermal Stress Restrained Bar Calculator
Estimate ideal axial stress when a bar cannot thermally expand.
Factor of Safety Ratio Calculator
Compare an entered strength value with a compatible working-stress estimate.
Gear Ratio Calculator
Find the tooth-count ratio of a simple gear pair.
Gear Output Speed Calculator
Find output rotational speed from an input speed and two gear tooth counts.
Gear Pitch Diameter Calculator
Find nominal pitch diameter from gear module and tooth count.
Gear Centre Distance Calculator
Estimate standard centre distance for two external gears of the same module.
Belt Drive Output Speed Calculator
Estimate speed ratio for a two-pulley belt drive.
Belt Linear Speed Calculator
Find belt linear speed from pulley pitch diameter and rotational speed.
Open Belt Length Calculator
Estimate the pitch length of an open two-pulley belt.
Lead Screw Linear Speed Calculator
Translate screw rotation into ideal axial travel rate.
Spindle Speed Calculator
Convert a selected metric cutting speed and diameter into spindle speed.
Cutting Speed Calculator
Find surface cutting speed from tool diameter and rotational speed.
Milling Feed Rate Calculator
Calculate nominal milling table feed from tooth count, chip load and spindle speed.
Feed Per Tooth Calculator
Recover nominal milling chip load from table feed and rotational speed.
Turning Feed Rate Calculator
Convert a turning feed per revolution into linear travel rate.
Milling Removal Rate Calculator
Estimate nominal metal removal rate for a milling pass.
Machining Time Calculator
Estimate feed-motion time for a machining pass.
Tap Drill Estimate Calculator
Estimate a cutting-tap pilot diameter from a metric diameter and pitch.
Drill Point Length Calculator
Find axial point length for an ideal drill tip.
Turning Diameter Reduction Time Calculator
Estimate repeated turning-pass feed time from travel, feed and speed.
Drilling Material Removal Rate Calculator
Find nominal drilling removal rate from hole diameter and feed.
Machining Cost Calculator
Combine estimated machining time with an hourly rate and extra costs.
Make your inputs count
Use actual dimensions, compatible units and appropriate manufacturer or material data. Ideal geometry and nominal relationships do not establish design adequacy, allowable stress, safe machine settings or compliance.