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.
