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Engineering · 5 tools

Physics & Engineering Calculators

Solve common mechanics and electrical relationships without hiding the assumptions behind one number. These calculators use internationally defined SI units, keep vectors and sign conventions explicit where they matter, and separate ideal textbook models from real components, measurement tolerances, losses, and safety limits.

Tools
5
Updated
Aug 2026
Runs
In browser
Cost
Free

Every engineering tool

A–Z · 5

  1. Force CalculatorCalculate net force magnitude from mass and acceleration with metric and US inputs and results in N, kN, and pound-force.
  2. Kinetic Energy CalculatorCalculate ½mv² from mass and speed, convert the result across energy units, and see momentum plus a high-speed relativity warning.
  3. Ohm’s Law CalculatorSolve V = IR for voltage, current, or resistance and see the corresponding ideal DC power in watts.
  4. Voltage Divider CalculatorCalculate unloaded or loaded voltage-divider output, resistor current and power, effective lower resistance, and loading error.
  5. Work CalculatorCalculate work done by a constant force over a displacement at any angle, with results in joules, foot-pounds, and kWh.