Calculators

Calculate AC watts, VA, VAR, and phase angle from voltage, current, and power factor.

Solve average acceleration, velocity, or time.

Find completed years, months, days, total days, and next birthday.

Solve constant angular-acceleration motion and rotational velocity changes.

Calculate angular momentum from rotational inertia or particle motion.

Calculate and convert angular velocity, RPM, period, and frequency.

Simplify dimensions and resize them without changing their proportions.

Calculate and compare four useful types of averages.

A simple arithmetic calculator for quick results.

Estimate battery runtime or required capacity from load and usable capacity.

Calculate adult BMI and the standard screening category from height and weight.

Find break-even units, revenue, contribution margin, and target-profit units.

Calculate CAGR and explore equivalent compound growth scenarios.

Calculate capacitance, charge, or voltage using Q = CV.

Calculate energy stored in a capacitor from capacitance and voltage.

Combine capacitors in series or parallel and calculate equivalent capacitance.

Find a system's center of mass from masses and positions.

Solve force, acceleration, speed, mass, or radius for circular motion.

Solve radius, diameter, circumference, and area from one measurement, with common length units.

Calculate sales commission, total earnings, and target sales.

Estimate final balance, contributions, and interest earned with compounding.

Find distance, midpoint, slope, and line equation from two points.

Calculate electrostatic force between two point charges.

Split total current across parallel resistors and calculate branch currents, voltage, resistance, and power.