Engineering & CAD
Mech Codex
Professional-grade engineering calculators, material databases, and standards references for mechanical engineers
- community votes
- 0
- DR by Ahrefs no change since last check
- 11
Ahrefs Domain Rating counted 6 Nov 2026, last shift 25 Oct 2026.
What it does
A browser-based platform with 298+ mechanical engineering calculators, 1,113 materials database, and standards references with full derivations and no paywalls.
Mech Codex: the homepage
Mech Codex provides professional-grade mechanical engineering calculators covering strength of materials, machine design, thermodynamics, fluid mechanics, heat transfer, dynamics and vibration, materials, manufacturing, controls and instrumentation, and quality and reliability. Each of the 298+ calculators is built from published standards including ASME BPVC, AISC 360, API 520, and AWS D1.1, showing full derivations and intermediate values with no black boxes.
The platform includes 1,113 material properties, 760 reference tables for pipe schedules and fastener data, and 274 standards references. All calculators require no signup or login, work on any device with full SI and US customary unit support, and are built by mechanical engineers with over 10 years of professional industry experience. Every formula is cited, derivations are shown, and results can be verified against published references.
What it packs
- 298+ engineering calculators with full derivations
- 1,113 material properties database including steels and alloys
- Interactive charts and live diagrams from user inputs
- Reverse-solve design tools to find lightest sections or spans
- 760 reference tables for pipe schedules and fastener data
- Standards references from ASME, AISC, API, AWS, ISO, AGMA
- Full SI and US customary unit support
- No signup or login required
- Theory tabs showing complete derivations and worked examples
Pricing
Pricing model: Free
One click to follow Mech Codex. Their milestones, product news and founder stories then reach you by email.
Mech Codex: raw metrics
The numbers for mechcodex.com: Ahrefs Domain Rating and Majestic links, arrows for the shift since last count.
- 11 Domain Rating no change since last check
- 6 Trust Flow no change since last check
- 24 Citation Flow no change since last check
- 17 Referring domains no change since last check
- 38 External backlinks no change since last check
Ahrefs Domain Rating counted 6 Nov 2026, last shift 25 Oct 2026. Biggest topic: Reference/Dictionaries (6). Majestic counted 25 Oct 2026, last shift 25 Oct 2026. Link numbers by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
Mech Codex: domain under the hood
Open the domain record
Data from the public RDAP record as of 5 Nov 2026, 20:11 UTC.
- Domain age 7 months
- Registered
- Expires
- Registrar Porkbun LLC
- DNSSEC Not signed
Mech Codex: after-launch readout
| Measure | At launch, then latest |
|---|---|
| Domain Rating (Ahrefs) | 11 to 11 no change since launch 25 Oct 2026, then 6 Nov 2026 |
| Trust Flow (Majestic) | 6 first measured 25 Oct 2026 |
| Referring domains (Majestic) | 17 first measured 25 Oct 2026 |
Day 11 since launch. Next receipt: day 30, 24 Nov 2026. We show what changed, not what caused it: many things affect these numbers. Nothing here is estimated.
Launch tips, free to read
Read the free launch playbook: a step-by-step plan for the days before, the day itself and the weeks after.
- The week before
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- Launch week
- Later on
Straight answers
Do I need to sign up or pay to use the calculators?
No. All 298+ engineering calculators on Mech Codex require no signup, no download, and no per-calculation fee. Every calculator works in any modern browser on desktop, tablet, or phone with full SI and US customary unit support.
Are the calculators based on actual engineering standards?
Yes. Every calculator implements the full governing equation from published references such as ASME BPVC for pressure vessels, AISC 360 for structural steel, API 520 for pressure relief devices, and AGMA 2001 for gear design. Each tool cites its source and shows the derivation.
Can I see how the calculations are done?
Yes. Every calculator shows the governing equation, intermediate values, and the assumptions it rests on. Each tool includes a Theory tab with the complete derivation, worked numerical examples, and published references.
Mech Codex has a free listing. The owner can unlock the full profile with a paid launch for $5:
- Founder story (locked)
- Milestones (locked)
- Demo video (locked)
- Dofollow website link (locked)