
Workshop Calc
Machinist Toolbox
Omni Calculator
CalcSteel
calculator.net
Amni-Calc
Calculatoredge
well maintained engineering calculators that show the formula and standard behind every result. Springs, gears, GD&T, machining and more. Metric & imperial.

Amni-Calc
Calculatoredge
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.
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| Website | machinecalcs.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 MachineCalcs 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
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of MechCodex yet.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing MachineCalcs 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 MachineCalcs and MechCodex. For example, how are they different and which one is better?
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Helping you make rational decisions, one calculation at a time.
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Standards-based mechanical-engineering calculators (ISO, ASME, EN, DIN, VDI) — gears, bearings, shafts, bolts, welds, pressure vessels and more, each with the governing standard, a worked example and a shareable PDF report.
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