Engineering unit conversion tools
Unit Converters
Choose a unit converter category, then browse focused tools for common units, electrical values, mechanical quantities, fluid dynamics, geometry, and thermodynamics.
Converter directory
Browse by unit type
Common
Core unit converters for distance, mass, time, and velocity used across engineering, physics, science, and everyday calculations.
5 convertersElectrical
Electrical and electronics converters for current, voltage, power, conductivity, and resistivity calculations.
4 convertersFluids
Fluid dynamics converters for viscosity, flow rate, surface tension, and related fluid property calculations.
4 convertersGeometry
Geometric converters for angle, area, volume, and specific volume used in engineering, physics, and design calculations.
10 convertersMechanical
Mechanical engineering converters for acceleration, angular motion, density, energy, force, pressure, torque, and rotational frequency.
4 convertersThermodynamics
Thermodynamics and heat transfer converters for enthalpy, specific heat capacity, thermal conductivity, and thermal resistance.
About EngLab unit converters
Engineering Unit Converters for SI, Metric, and Imperial Units
Use EngLab engineering unit converters to convert SI, metric, imperial, and US customary units for pressure, force, torque, power, energy, mass, distance, velocity, flow rate, viscosity, temperature, area, volume, thermal properties, and electrical values. These free online conversion tools are built for engineers, students, technicians, designers, and tradespeople who need quick unit conversions for calculations, reports, drawings, specifications, and technical documentation.
The unit converter library is organized by engineering discipline so you can quickly find mechanical unit converters, electrical unit converters, fluid dynamics converters, geometry converters, thermodynamics converters, and common everyday unit conversions. Use the results for preliminary checks and workflow speed, then verify critical values against project standards, datasheets, calibrated instruments, and required unit systems before final design or construction use.