XoverPi
XoverPi calculator guides

Engineering calculators that make decisions clearer.

Explore practical electrical, mechanical, and construction calculations with clearly organized engineering tools.

Electrical fundamentals

Voltage, current, resistance, and power are related. Confirm circuit assumptions and component ratings before applying a calculation.

Ohm’s lawCalculate voltage, current, or resistance.Resistor powerEstimate electrical power dissipation.Parallel resistanceCalculate equivalent resistance of parallel components.Capacitor energyEstimate stored capacitor energy.

Mechanical and material calculations

Be consistent with units and distinguish mass from force. These estimates do not replace detailed engineering design checks.

Force calculatorApply a basic force relationship.Density calculatorRelate mass and volume.Volume calculatorWork with geometric volume.

Construction estimates

Material waste and on-site conditions can change real requirements; allow a suitable margin and consult local specifications.

Concrete calculatorEstimate concrete quantities.Roof pitchCalculate rise and run.Paint calculatorEstimate coverage for a project.