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MechanixCalc
50 ISO/ASME engineering calculators with shareable reports
MechanixCalc runs the actual governing standards — ISO 6336 gears, ISO 281 bearings, VDI 2230 bolts, DIN 743 shafts, ASME VIII vessels, EN 1993-1-8 welds and more — in your browser. What's different: every one of the 50 tools cites its standard, shows the formula and a worked example, and exports a branded PDF report a reviewer can follow. It's the bridge between a free single-answer calculator and $10k desktop software like KISSsoft/MITCalc. No install; free 30-min preview, no sign-up.
I built MechanixCalc because everyday mechanical calculations sit in an awkward gap: free online calculators are "simplified estimates" you can't put in a design file, while the professional desktop software (KISSsoft, MITCalc) is expensive and install-bound.
MechanixCalc runs the actual governing standards (ISO 6336 gears, ISO 281 bearings, VDI 2230 bolts, DIN 743 shafts, ASME VIII vessels and more) right in your browser, shows the worked method, and gives you a shareable PDF report — for sizing, checking and quoting before you commit to a desktop seat. 50 tools, no install.
Try any tool free for 30 minutes, no signup. I'd love your feedback on which standard or tool to add next!
ran the ISO 6336 spur gear calc and the worked example actually matched my old textbook numbers, which I wasn't expecting. the PDF export is clean enough to hand to a reviewer without reformatting it first. solid middle ground between online calculators and the heavy desktop suites.
ran the ISO 6336 gear calc and being able to see the actual formula and standard clause next to the inputs is genuinely useful for sanity-checking. nice that the PDF report cites everything too, makes handoff to a reviewer way easier than a screenshot.
honestly looks super useful, especially for quick checks without booting up KISSsoft. one thing that would make it way better is letting users save a project with multiple linked calculations so you can see how changing a gear ratio downstream affects the bearing life in the same shaft system
Finally something that actually shows the formulas and cites the standards instead of just spitting a number. Tried the gear tool and the worked example saved me from digging through ISO 6336 for an hour.
Would love to see a saved-history tab where previous calcs can be reopened and edited without retyping inputs, plus a side-by-side compare of two results. That would save a lot of time when checking design iterations against the same standard.
The worked example and standard citations are exactly what makes this useful, nice angle. One thing I'd love is a unit system toggle that stays consistent across all 50 tools, so I can flip between metric and imperial mid-project without re-entering inputs in each calculator. Would make the PDF reports way easier to share with our US-based reviewers.
ran the ISO 6336 gear calc and appreciated seeing the actual standard paragraph cited right next to the formula, not just a number spit out.
About MechanixCalc on Product Hunt
“50 ISO/ASME engineering calculators with shareable reports”
MechanixCalc was submitted on Product Hunt and earned 15 upvotes and 15 comments, placing #53 on the daily leaderboard. MechanixCalc runs the actual governing standards — ISO 6336 gears, ISO 281 bearings, VDI 2230 bolts, DIN 743 shafts, ASME VIII vessels, EN 1993-1-8 welds and more — in your browser. What's different: every one of the 50 tools cites its standard, shows the formula and a worked example, and exports a branded PDF report a reviewer can follow. It's the bridge between a free single-answer calculator and $10k desktop software like KISSsoft/MITCalc. No install; free 30-min preview, no sign-up.
MechanixCalc was featured in Design Tools (261.3k followers), Productivity (656.2k followers) and Education (78.8k followers) on Product Hunt. Together, these topics include over 217.1k products, making this a competitive space to launch in.
Who hunted MechanixCalc?
MechanixCalc was hunted by Blagoj Bejkov. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Blagoj Bejkov
Hi Product Hunt 👋
I built MechanixCalc because everyday mechanical calculations sit in an awkward gap: free online calculators are "simplified estimates" you can't put in a design file, while the professional desktop software (KISSsoft, MITCalc) is expensive and install-bound.
MechanixCalc runs the actual governing standards (ISO 6336 gears, ISO 281 bearings, VDI 2230 bolts, DIN 743 shafts, ASME VIII vessels and more) right in your browser, shows the worked method, and gives you a shareable PDF report — for sizing, checking and quoting before you commit to a desktop seat. 50 tools, no install.
Try any tool free for 30 minutes, no signup. I'd love your feedback on which standard or tool to add next!