Engineering tools
Free calculators for everyday engineering tasks. No account needed, no API calls — everything runs in your browser.
Hardness Converter
HRC ↔ HB ↔ HV ↔ Tensile strength (MPa). Based on ASTM E140.
Weight Calculator
Round bar, tube, plate — calculate weight for any steel grade.
Unit Converter
MPa ↔ ksi, mm ↔ inch, °C ↔ °F and more. Bidirectional, live.
CEV Calculator
Carbon equivalent (CEV, Pcm, CET) — weldability assessment.