Free tools

Calculators for machine designers

Small, focused tools that run in your browser, free with no sign-up. Each one is released after its numbers are checked against the relevant standard. Join the list to hear when the first ones are out.

In development

01

BeltFit

Timing belt length ↔ center distance, snapped to stock belt lengths.

First up
02

ScrewStack

Screw length, thread engagement, and clearance and counterbore holes for a stack of parts.

First up
03

CabinetTherm

Control cabinet heat load to fan CFM or A/C size.

First up
04

StackUp

1D tolerance stacks: worst case, RSS, Monte Carlo and Cpk.

Coming
05

ShaftCheck

Stepped shaft deflection, bearing slope, fatigue and critical speed.

Coming
06

Joint Report

Bolted joint checks, with a PDF for design review.

Coming
07

AxisSizer

Motor sizing for linear axes, from any vendor.

Coming
08

GlandCalc

O-ring groove squeeze, stretch, fill and extrusion, with DXF output.

Coming
09

ChainFill

Drag chain sizing, fill and cable cut list.

Coming

Hear when new tools are released