PhysCalc is a free collection of physics calculators built for students, engineers, and curious minds. Whether you're solving Newton's law problems, calculating wave properties, or exploring electromagnetic theory, our tools give you instant, accurate results — no sign-up required.

Our Mission

We believe physics problem-solving should be simple and accessible to everyone. Too many useful calculators are buried behind paywalls, registration forms, or cluttered with ads that obscure the actual tool. PhysCalc strips away the noise: you enter your values, you get your answer.

Our calculators are designed for accuracy first. Every formula is verified against standard physics references, and built-in constants (gravitational acceleration g = 9.81 m/s², Coulomb's constant k = 8.99×10⁹ N·m²/C², speed of light c = 3×10⁸ m/s) are pre-loaded so you never have to look them up separately.

What We Offer

Mechanics (5 tools): Force (F=ma), velocity (v=d/t), acceleration, momentum (p=mv), kinetic energy (KE=½mv²)
Waves (5 tools): Frequency (f=v/λ), wavelength, wave speed, pendulum period (T=2π√(L/g)), spring constant (Hooke's Law)
Electricity (5 tools): Coulomb's law, electric field, capacitance (C=Q/V), magnetic force, electromagnetic spectrum reference

Who Uses PhysCalc?

Our users range from high school students working through introductory physics homework to university engineers double-checking field calculations. Common use cases include:

Students: Checking homework answers and understanding formula relationships
Engineers: Quick sanity checks for force, energy, and electrical calculations
Teachers: Generating worked examples and verifying textbook problems
Curious learners: Exploring "what if" scenarios — what happens to kinetic energy when speed doubles?

How Our Calculators Work

Every calculator on PhysCalc is built around the solve-for principle: rather than fixing which variable is the output, you choose what to solve for. On the Force Calculator, for example, you can solve for Force, Mass, or Acceleration — whichever two values you know determines the third. This mirrors how physicists actually think about problems.

All calculations run directly in your browser using JavaScript. No data is sent to any server, and results are available instantly without page reloads.

Accuracy and Limitations

PhysCalc is designed for classical (Newtonian) physics at everyday scales. It is not intended for relativistic calculations (speeds approaching light), quantum mechanical systems, or situations requiring numerical integration. For standard mechanics, wave, and electricity problems, results are accurate to the precision of your inputs.

Contact and Feedback

Found an error in a formula? Have a suggestion for a new calculator? We welcome feedback. Visit our contact page to get in touch. We review all submissions and prioritize bug reports.

About PhysCalc