3-jaw gear puller by part OD
Match measured bearing, gear, or pulley outside diameter to a 3 / 4 / 6 / 8 in max-spread 3-jaw puller class — or NO_MATCH below 0.5 in or above the 8 in ceiling.
Workshop calculators and tools
Find workshop tools for compressed air, metal bending, welding, torque, presses and bench vises. Compare the measurements each task needs.
Choose a tool
Air compressor CFM calculator
Estimate required air delivery from pneumatic tool demand and duty cycle.
Air hose sizing tool
Check hose diameter and run length against the airflow required by your pneumatic tool.
Angle grinder disc size tool
Match needed disc diameter to 4.5 / 5 / 7 in corded angle-grinder classes with verified merchant links.
Arbor press sizing tool
Match required force to 0.5 / 1 / 3 ton manual arbor press classes with verified merchant links.
Bench vise opening selector
Compare bench vise classes against the jaw opening your workpiece needs.
Bolt cutter size tool
Match soft-stock diameter to 8 / 14 / 18 / 24 in bolt-cutter classes with verified merchant links.
Cable cutter mm² calculator
Match soft copper or aluminum cable cross-section in mm² to a 240, 400, or 500 mm² ratchet cutter class.
Caster size selector
Compare plate caster classes from total loaded cart or bench weight.
CNC chip load (IPT)
Compute machining chip load (inches per tooth) from feed rate, spindle RPM, and flute count.
Drum fan CFM calculator
Match room volume and target ACH to a 20, 24, or 30 in high-velocity drum fan.
Drywall lift height calculator
Match ceiling height and panel size to an 11 or 16 ft / 150 lb drywall panel lift — or NO_MATCH when weight or height exceed this ladder.
Extension cord AWG voltage-drop calculator
Enter tool amps, one-way cord length, voltage, and drop limit to get recommended copper AWG, voltage at the tool, and an optional 16/14/12 AWG shopping class — or NO_MATCH.
F-clamp opening size tool
Match needed opening to 6 / 12 / 24 / 36 in F-clamp classes with verified merchant links.
Garage shelving size selector
Compare garage shelving classes from heaviest single-shelf load.
Gear tooth ratio and RPM
Compute gear ratio and driven RPM from tooth counts and driver RPM for spur-gear screening.
Hand plate shear length calculator
Size a benchtop hand plate shear by required straight cut width across 6, 8, and 12 in blade classes.
Hand truck size selector
Compare hand truck classes from heaviest single load weight.
Heat press platen size selector
Compare heat presses from design width and height in inches.
Hole saw diameter tool
Match needed hole diameter to 68 / 114 / 200 mm hole-saw kit classes with verified merchant links.
Hydraulic cylinder force
Compute theoretical hydraulic cylinder extension force from bore and pressure.
LED strip watts and amps
Compute LED strip total wattage and approximate 12 V current from length and watts per foot.
LED work light size selector
Compare portable LED work-light lumen classes from floor area.
Lever mechanical advantage
Compute ideal lever mechanical advantage from effort arm and load arm lengths before a pry setup.
Magnetic drill capacity calculator
Size a portable magnetic drill by required annular-cutter hole diameter across 35, 50, and 60 mm classes.
MIG welder amp sizing
Estimate a starting amperage and welder class for mild steel thickness.
NPT pipe threader calculator
Match nominal NPT pipe size to a 1 in, 1-1/4 in, or 2 in ratchet threader die class.
Ohm's law power
Compute electrical power from voltage and current using P = V × I.
Oil filter cap socket by mm OD
Match measured oil-filter cap outside diameter in millimeters to a 7 / 14 / 30-piece VEVOR US socket set — or NO_MATCH below 24 mm, in the 39–64 mm gap, or above 108 mm.
Open V-belt length (in)
Estimate open-drive belt length from two pulley diameters and center distance.
Orifice discharge (GPM)
Estimate orifice discharge in GPM from Cd, diameter, and head using the orifice equation.
Parallel clamp opening size tool
Match needed jaw opening to 24 / 30 / 36 in parallel-clamp classes with verified merchant links.
Pipe cutter OD size tool
Match measured pipe OD to 1.125 / 2 / 2.5 in manual cutter classes with verified merchant links.
Pipe cylinder volume (gal)
Compute internal cylinder volume of a round pipe section in US gallons.
Plasma cutter sizing tool
Match mild-steel clean-cut thickness to 40 / 50 / 65 A plasma classes with verified merchant links.
Plate compactor size selector
Compare plate compactors from target compaction force.
Pop rivet mm calculator
Match blind rivet diameter in millimeters to a 32, 48, or 64 class (3.2 / 4.8 / 6.4 mm) setter ladder.
Post-hole auger bit by hole diameter
Map the finished hole diameter you need in inches to a 6, 8, or 10 in earth-auger bit class, or get an explicit NO_MATCH for larger holes.
Pulley speed ratio
Estimate driven pulley RPM from driver RPM and two pulley diameters.
Pump affinity flow (Q₂)
Estimate new pump flow from the affinity law when only shaft speed changes.
Ratchet strap WLL calculator
Size FMCSA-style aggregate WLL and tiedown count to 3,333 / 4,000 lb ratchet strap classes with verified merchant links.
RC time constant (τ)
Compute RC time constant τ=RC and the approximate 5τ settling time for timing screens.
Rebar cutter mm calculator
Match rebar diameter in millimeters to a 16, 20, or 25 mm portable electric hydraulic cutter class.
Rectangular duct equivalent diameter
Estimate equivalent round duct diameter for a rectangular duct using the ASHRAE-style relation.
Refrigerant recovery tank by charge lb
Match estimated recoverable charge to a 30 or 50 lb recovery cylinder using an 80% shopping ceiling — or NO_MATCH above 40 lb.
Reynolds number (Re)
Compute Reynolds number Re=ρVD/μ for laminar vs transitional vs turbulent pipe-flow screening.
Right-triangle hypotenuse
Compute the hypotenuse of a right triangle from the two leg lengths for stock or layout checks.
Rivet nut tool sizing calculator
Estimate a rivet-nut hand-tool kit class from the largest metric M size you need.
Round duct velocity (FPM)
Compute average air velocity in a round duct from CFM and inside diameter for noise and pressure screening.
Sandblaster tank size calculator
Estimate portable sandblaster tank class from surface area and job intensity.
Sheet metal brake width tool
Match needed bend width to 24 / 36 / 48 in box-and-pan brake classes with verified merchant links.
Shop press capacity selector
Compare hydraulic shop press capacity classes against your required tonnage.
Spring balancer capacity by kg
Match tool and hose weight in kilograms to a 1–3 through 15–22 kg spring tool-balancer class — or NO_MATCH above 22 kg.
Spring rate (lbf/in)
Compute linear spring rate k = F / x from force and deflection.
Surface feet per minute
Convert diameter and RPM into surface feet per minute for turning comparisons.
Tank fill time (min)
Estimate minutes to fill a tank from capacity and constant fill rate before choosing a transfer pump.
Telescoping ladder size selector
Compare telescoping ladder length classes from support height.
Torque from force and arm
Compute torque from force and lever arm length before setting a torque wrench target.
Torque wrench range selector
Find a torque wrench range that includes the required fastener torque.
Triangle area (base × height)
Compute triangle area from base and perpendicular height for sheet goods or paint estimates.
Tube bender size selector
Compare tube bender classes from measured tube outside diameter.
Ultrasonic tank sizing tool
Match immersed part volume to 2 / 3 / 6 / 10 L ultrasonic tank classes with verified merchant links.
Vacuum degassing chamber size calculator
Match resin mix gallons and foam headroom to a 3 or 5 gal vacuum degassing chamber — or NO_MATCH when the batch exceeds this ladder.
Vinyl cutter max feed width selector
Compare vinyl cutters from needed media feed width in inches.
Welding cart capacity calculator
Estimate a welding cart capacity class from welder/plasma weight plus tank, cables, and tools on the cart.
Wet/dry shop vac size calculator
Estimate portable wet/dry vac tank class from cleanup area and debris type.
Match the calculation to the job
Workshop equipment uses several different capacity measures. Air delivery, pressure, bending geometry and torque describe different requirements; a larger headline number is not a substitute for the right specification.
- For pneumatic tools, start with their air demand and operating pressure, then consider hose length.
- For bending, distinguish tube outside diameter from pipe sizing and check compatible dies.
- Use equipment manuals and rated limits to confirm a selection before working.