Precision calculators, unit converters, and data tools help engineers with design, analysis, and documentation.
Convert between torque units including N⋅m, lbf⋅ft, kgf⋅m, dyn⋅cm, and more. Perfect for engineering, automotive, and mechanical applications
Convert between frequency units including Hz, kHz, MHz, GHz, RPM, and more. Perfect for electronics, audio engineering, and scientific calculations
Convert between force units including newtons, pound-force, dynes, and kilogram-force. Essential for physics, engineering, construction, and automotive applications.
Convert between photon energy units including eV, nm, Hz, and joules. Essential for optics, spectroscopy, and quantum physics.
Convert between energy units including joules, calories, kilowatt-hours, BTUs, electron volts, and more. Perfect for physics, engineering, chemistry, and everyday calculations
Convert between power units including watts, kilowatts, horsepower, BTUs per hour, and more. Perfect for electrical engineering, mechanical systems, and power calculations
Convert between density units including kg/m³, lb/ft³, g/cm³, and more. Perfect for physics, chemistry, engineering, and material science calculations
Convert between heat transfer coefficient units including W/m²·K, BTU/hr·ft²·°F, cal/s·cm²·°C, and more. Perfect for engineering, HVAC, construction, and thermal analysis
Convert between AWG, SWG, millimeters, and inches for electrical engineering and manufacturing
Convert between angular velocity units including rad/s, deg/s, RPM, and more. Essential for mechanical engineering, robotics, and rotational motion analysis
Convert between acceleration units including m/s², ft/s², g-force, and more. Essential for physics, automotive testing, and aerospace applications
Convert between angular acceleration units including rad/s², deg/s², and more. Essential for mechanical engineering and rotational dynamics
Convert between moment of inertia units including kg·m², lb·ft², and more. Essential for mechanical engineering and rotational dynamics
Convert between moment of force units including N·m, lbf·ft, and more. Essential for mechanical engineering and statics
Convert between thermal expansion coefficient units including 1/K, 1/°C, 1/°F, and more. Essential for materials science and engineering
Convert between thermal resistance units including K/W, °C/W, °F·hr/BTU, and more. Essential for heat transfer and insulation analysis
Convert between thermal conductivity units including W/m·K, BTU/hr·ft·°F, cal/s·cm·°C, and more. Essential for heat transfer analysis
Convert between heat density units including J/m³, BTU/ft³, cal/cm³, and more. Essential for heat storage and thermal analysis
Convert between heat flux density units including W/m², BTU/hr·ft², cal/s·cm², and more. Essential for heat transfer analysis
Convert between mass flux density units including kg/m²·s, lb/ft²·hr, g/cm²·min, and more. Essential for mass transfer analysis
Convert between frequency and wavelength units including Hz, THz, nm, μm, and more. Essential for optics and electromagnetic wave analysis
Convert between electric charge units including coulombs, ampere-hours, faradays, and more. Essential for electrical engineering and electrochemistry
Convert between linear charge density units including C/m, C/cm, and more. Essential for electrical engineering and electrostatics
Convert between surface charge density units including C/m², C/cm², and more. Essential for electrical engineering and electrostatics
Convert between volume charge density units including C/m³, C/cm³, and more. Essential for electrical engineering and electrostatics
Convert between electric current units including amperes, milliamperes, microamperes, and more. Essential for electrical engineering
Convert between linear current density units including A/m, A/cm, and more. Essential for electrical engineering and electromagnetics
Convert between surface current density units including A/m², A/cm², and more. Essential for electrical engineering and electromagnetics
Convert between electric field strength units including V/m, V/cm, kV/m, and more. Essential for electrical engineering and electrostatics
Convert between electric potential units including volts, millivolts, kilovolts, and more. Essential for electrical engineering
Convert between electric resistance units including ohms, milliohms, kilohms, and more. Essential for electrical engineering
Convert between electric resistivity units including Ω·m, Ω·cm, μΩ·cm, and more. Essential for electrical engineering and materials science
Convert between electric conductance units including siemens, millisiemens, and more. Essential for electrical engineering
Convert between electric conductivity units including S/m, S/cm, mS/cm, and more. Essential for electrical engineering and materials science
Convert between capacitance units including farads, microfarads, picofarads, and more. Essential for electrical engineering
Convert between inductance units including henries, millihenries, microhenries, and more. Essential for electrical engineering
Convert between magnetomotive force units including ampere-turns, gilberts, and more. Essential for electrical engineering and electromagnetics
Convert between magnetic field strength units including A/m, Oe, and more. Essential for electrical engineering and electromagnetics
Convert between magnetic flux units including webers, maxwells, and more. Essential for electrical engineering and electromagnetics
Convert between magnetic flux density units including teslas, gauss, and more. Essential for electrical engineering and electromagnetics
Calculate percent error between experimental and theoretical values
Engineering is one of the site's deepest toolsets — 41 converters and calculators covering the mechanical, electrical, and physical-unit conversions that come up across disciplines.
Mechanical and structural engineers use the Torque Converter and Force Converter for fastener and load specs, and the Angular Velocity Converter and Angular Acceleration Converter for rotational-motion calculations in machine design. The Frequency Converter supports signal and vibration analysis, while the Density Converter and Heat Transfer Converter come up in materials selection and thermal design work.
For electronics and instrumentation, the Wire Gauge Converter is a frequent lookup when cross-referencing AWG against metric wire sizes for a build spec, and the Power Converter and Energy Converter handle the unit mismatches that show up between datasheets, calculations, and reporting. The Photon Energy Converter serves optics and semiconductor work where energy needs to be expressed in wavelength or frequency terms.
What ties the 41 tools together is that engineering work routinely crosses unit systems — a supplier datasheet in SI units, a client spec in imperial, a legacy calculation in CGS — and getting that conversion wrong has real consequences. These converters are built to be a fast, reliable check against that kind of error, not a substitute for engineering analysis software, but a useful desk reference during design, review, and documentation.