Scientific calculators
Physics, chemistry, and scientific tools.
Ohm's Law Calculator
Compute voltage, current, resistance and power using Ohm's law.
Power Consumption Calculator
Estimate electrical energy use and cost from wattage and run time.
Kinetic Energy Calculator
Compute the kinetic energy of a moving object.
Gravitational Potential Energy Calculator
Compute PE = mgh for an object at a height.
Force Calculator (F = ma)
Compute force from mass and acceleration.
Density Calculator
Compute density from mass and volume (ρ = m/V).
Molarity Calculator
Compute molar concentration from moles and solution volume.
pH Calculator
Convert between H⁺ concentration and pH.
Wavelength & Frequency Calculator
Convert between wavelength and frequency using c = fλ.
Speed, Distance & Time Calculator
Solve d = v × t for any missing value.
Projectile Motion Calculator
Compute range, height and time of flight for a projectile.
Ideal Gas Law Calculator
Solve PV = nRT for pressure, volume, moles or temperature.
Half-Life Calculator
Compute the remaining amount of a decaying substance over time.
Resistor Color Code Calculator
Look up resistor values from the standard 4-band color code.