6 tools available
Unit converters for mechanical quantities — force (N, lbf, kN, kgf), pressure and stress (Pa, MPa, psi, bar), and torque (Nm, ft·lb, kgf·m). Covers all units used in structural analysis, machine design and materials testing.
Type a force in any of the four units and the rest convert instantly. Newton (N) and kilonewton (kN) are the SI standards; pound-force (lbf) is the US customary unit; kilogram-force (kgf) is still common in legacy machinery specifications. Covers structural loads, bolt preloads and fluid pressure calculations.
Enter pressure in any of the seven units and all others refresh immediately. Covers Pascal (Pa), megapascal (MPa), bar, pound per square inch (psi), pound per square foot (psf), standard atmosphere (atm) and millimetre of mercury (mmHg) — the full set needed for fluid power, HVAC, civil engineering and medical equipment.
Type a torque in N·m, kgf·m, lbf·ft or lbf·in and all four update simultaneously. N·m is the SI standard; kgf·m appears in older machine manuals; lbf·ft and lbf·in are ubiquitous in US automotive and fastener specifications. One tool for every wrench, motor and drive-shaft calculation.
Input a bending moment in kN·m, N·m, kip·ft or lbf·ft and all four values update at once. Moment units span the full range from hand-tool torque to bridge-girder design — this converter keeps structural calculations consistent when mixing SI and US code references.
Enter a linear distributed load in kN/m or lbf/ft, or an area load in kPa or psf, and the paired unit refreshes immediately. Linear loads apply to beams and floor joists; area loads appear in slab design, soil pressure and floor live-load specifications. The two converters operate independently.
Input a second moment of area in cm⁴ or in⁴, or a section modulus in cm³ or in³, and the paired unit updates instantly. These cross-section properties appear in every beam-bending and column-buckling calculation; the converter eliminates the manual factor of 41.623 (in⁴ ↔ cm⁴) or 16.387 (in³ ↔ cm³).
Typical engineering problems solved with Mechanics & Strength calculators: