Calculators
Small tools, published as plain static pages — no backend.
Electrical & electronics
Ohm's law solver
Resistor color code
PCB trace width
AWG conductor wire sizing & voltage drop
Electrical extras: parallel resistors, LC resonance & EM spectrum
Voici dashboard: sensor calibration
Fluid & mechanical engineering
Compressible flow (gas dynamics)
Reynolds number & flow regime
Local exhaust hood capture velocity
Bolt tightening torque & shear stress
Fluid mechanics: viscosity, Bernoulli, pump power & pipe sizing
Mechanics extras: roof pitch, vibration, motor power & more
HVAC & thermal
HVAC & thermodynamics: duct, LMTD, heat recovery & more
HVAC noise rating (NC) & psychrometric state calculator
Fire & life safety
Fire engineering: smoke descent, flame ht, radiation & FDS mesh
Smoke control systems (NFPA 92)
Sprinkler & fire pump hydraulics (NFPA 13/20)
Egress & life safety (NFPA 101/72)
Suppression agents & fire dynamics (NFPA 2001/12)
FDS tools: grid size, HRR curve generator & radiant heat flux
Math & science
Algebra solvers: quadratic, cubic, Cramer, polynomial & matrix
Planar geometry: triangle area, perimeter, circle, rectangle
Solid geometry: sphere, cylinder, cone, prism, pyramid
Triangle trig: law of sines/cosines, ASA SAS SSS SSA
Torus volume & surface area
Physics & atmosphere
Physics toolkit: vectors, gravitation, relativity & more
Atmospheric & gas law toolkit
Escape velocity & surface gravity