Science & Engineering

Ohm's Law Calculator

Solve for voltage, current, or resistance given any two values.

Resistor Color Code Calculator

Decode a 4-band resistor color code to its resistance value.

Voltage Divider Calculator

Output voltage, current, and power for a resistor voltage divider.

Torque Calculator

Calculate torque in N·m, ft·lb, and in·lb from force and moment arm.

Newton's Second Law Calculator

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

Density Calculator

Solve for density, mass, or volume (ρ = m/V).

pH Calculator

H⁺ concentration, pOH, and classification from a pH value.

Half-Life Calculator

Remaining quantity after radioactive decay over any time period.

Kinematics Calculator

Solve SUVAT equations for velocity, acceleration, time, and displacement.