Science

Enter any two of voltage, current, and resistance to solve the third and the power.

Pick the band colors of a 4-band or 5-band resistor to read its resistance and tolerance.

Compute electrical power from voltage and current, current and resistance, or voltage and resistance.

Convert a 3-digit capacitor code such as 104 into capacitance in pF, nF, and µF.

Enter input voltage and two resistors to find the divided output voltage.

Find the series resistor for an LED from supply voltage, forward voltage, and current.

Convert between wavelength and frequency using the wave speed relation c = λf.

Convert a frequency between Hz, kHz, MHz, GHz and its period in seconds.

Solve for density, mass, or volume using the density formula.

Compute force, mass, or acceleration with Newton's second law F = m·a.

Calculate the kinetic energy of a moving object from its mass and velocity.

Find acceleration from initial velocity, final velocity, and time.

Convert energy between joules, calories, kilocalories, kWh, eV, and BTU.

Calculate the molar mass of any chemical formula in grams per mole.

Convert between hydrogen ion concentration, pH, and pOH.