Calculators

Convert relative power and amplitude ratios to and from decibels.

Solve density, mass, or volume with unit conversion.

Solve C₁V₁ = C₂V₂ with compatible concentration and volume units.

Find final price and savings after a percentage discount.

Calculate PWM timing plus ideal average and RMS voltage.

Calculate point-charge field strength, direction, and test-charge force.

Calculate point-charge electric potential from charge and distance.

Find the final exam score needed to reach a target course grade.

Solve force, mass, or acceleration with F = ma.

Calculate and simplify arithmetic with two fractions.

Solve friction force, coefficient, or normal force with F = μN.

Estimate fuel needed and fuel cost for a trip from distance and efficiency.

Calculate GCD and LCM for two whole numbers.

Calculate term and cumulative GPA on a credit-weighted 4.0 scale.

Solve gravitational potential-energy change, mass, or height.

Solve F = kx and elastic spring energy.

Solve liquid pressure, depth, or density with p = ρgh.

Solve PV = nRT for pressure, volume, moles, or temperature.

Calculate series AC impedance, reactance, phase angle, and resonance.

Solve impulse with J = FΔt = Δp, or find average force or time.

Calculate energy stored in an inductor from inductance and current.

Combine inductors in series or parallel and calculate reactance.

Solve one-dimensional constant-acceleration motion problems.

Solve kinetic energy, mass, or speed with unit conversion.