Machinist Toolbox
CalcSteel
MachineCalcs
Maker Calc
Complete offline metal and machinist toolbox for weight, units, fractions, threads, tap drills, materials, job records, and professional exports.

Amni-Calc
Calculatoredge
MachineCalcs
MechanixCalc
Interactive mechanical engineering calculators with derivations — bearings, gears, pumps, welding, FEA, HVAC, piping, thermodynamics and more, plus a 1,114-material property database and worked examples for every calculation.

Which is more popular?
Website, pricing, platforms and company facts side by side.
|
WC
Workshop Calc
|
|
|
|---|---|---|
| Website | yunfanlabs.com | mechcodex.com |
| Pricing | — | |
| Platforms | — | |
| Company | — | Startup from Canada · 1 - 9 employees |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Workshop Calc yet.
MechCodex is an online toolkit of interactive mechanical engineering calculators covering machine design, strength of materials, fluid mechanics, heat transfer, thermodynamics, manufacturing and HVAC. Every calculator shows its governing equations and a worked example, in both SI and Imperial...
What each product offers, as listed by its team.

Possible disadvantages
How often each product is chosen within a category, 0–100% relative to the other.

As answered by people managing Workshop Calc and MechCodex.
MechCodex's answer:
Because the answer comes with proof. Every calculation shows its derivation and cites the governing standard, in SI and Imperial side by side. It's the difference between getting a number and understanding it — free, no account needed.
MechCodex's answer:
Working mechanical engineers who need a fast, verifiable answer on the job, and engineering students who want to see the derivation behind the formula — not just the final number.
MechCodex's answer:
A modern web stack: Next.js and React on the frontend, with KaTeX for rendering math and a Postgres-backed database for the materials property lookups.
MechCodex's answer:
MechCodex's answer:
MechCodex started in December 2025 — "The Engineer's Toolkit" — built by a working mechanical engineer who wanted a calculator that shows its work: every result backed by the governing equations and a worked example, free for everyone.
MechCodex's answer:
Two things: every calculator shows the complete derivation — equations, steps, worked example — so you verify instead of trust. And the calculators sit next to a searchable materials property database and standards references, so the data you need is already there. All free, no signup.
Share your experience with using Workshop Calc and MechCodex. For example, how are they different and which one is better?
When comparing Workshop Calc and MechCodex, you can also consider the following products.
Manufacturing Vertical Software
Compare Machinist Toolbox to Workshop Calc or MechCodex:

Amni-Calc — free WASM engineering modules for bolted joints, stress analysis, beams, and related mechanical checks. Theory + calculator on the same page; data never leaves the browser. Open modules at amni-scient.com/calc/ (e.g. bolts, stress, beam).
Compare Amni-Calc to Workshop Calc or MechCodex:

Model, detail and generate drawings for steel structures directly in your browser. 3D editor, automatic sheets, PDF export.
Compare CalcSteel to Workshop Calc or MechCodex:
calculators, engineering, mechanical, electrical, electronics, design, construction, manufacturing, consultant, layout, software, chemical, plastic, polymers
Compare Calculatoredge to Workshop Calc or MechCodex:

well maintained engineering calculators that show the formula and standard behind every result. Springs, gears, GD&T, machining and more. Metric & imperial.
Compare MachineCalcs to Workshop Calc or MechCodex:

Measurement Calculator for People who Build with their Hands
Compare Maker Calc to Workshop Calc or MechCodex: