Physics Calculators
Master the laws of the universe with our precision tools.
Physics explains how our world moves, works, and interacts, from the smallest electron to the largest galaxy. Our Physics Calculators are designed to demystify these complex relationships. Whether you are a high school student grappling with kinematics or an engineer needing a quick check on Ohm's Law, these tools provide instant, formula-backed results to help you solve problems with confidence.
Velocity Calculator
Calculate speed, distance, and time (v = d/t).
Acceleration Calculator
Compute change in velocity over time (a = Δv/t).
Force Calculator
Newton's Second Law of Motion (F = ma).
Kinetic Energy Calculator
Calculate the energy of motion (KE = 0.5 * mv²).
Ohm's Law Calculator
Solve for Voltage, Current, or Resistance (V = IR).
Power Calculator
Calculate mechanical power (Work / Time).
Density Calculator
Compute mass per unit volume (ρ = m/V).
Pressure Calculator
Calculate force per unit area (P = F/A).
Physics FAQ
What units does this calculator use?
By default, we use SI Units (International System of Units) wherever possible—Meters for distance, Seconds for time, Kilograms for mass. However, many calculators offer toggle switches for US Customary units (miles, pounds) where appropriate.
Is Ohm's Law universal?
Mostly. Ohm's Law (V=IR) applies to most standard conductors (resistors, wires). However, it breaks down for "non-ohmic" devices like diodes or transistors where resistance changes with voltage.
Difference between Speed and Velocity?
Speed is scalar (just a magnitude, like 60mph). Velocity is a vector (magnitude + direction, like 60mph North). In 1D calculations, they are often used interchangeably, but vectors matter in complex 2D motion.
Why is F=ma so important?
Newton's Second Law connects the cause (Force) with the effect (Acceleration). It is the foundation of classical mechanics. Use our Force Calculator to see this relationship in action.