Physics Calculators
Compute velocity, acceleration, energy, and wave properties.
755 free calculators
From Fundamentals to Applied Engineering
Physics calculations range from textbook kinematics problems to real-world engineering applications. This section covers both — whether you're solving homework or sizing equipment for a project, the underlying formulas are the same.
Most-Used Tools
The dew point calculator is our most popular physics tool, used by HVAC technicians, pilots, and weather enthusiasts alike. The density calculator solves the classic mass-over-volume relationship in any direction. For automotive and mechanical work, the compression ratio calculator and axle ratio calculator see heavy use from builders and tuners.
Mechanics, Thermodynamics, and Waves
You'll find tools organized around the major branches of physics: classical mechanics (force, torque, momentum), thermodynamics (heat transfer, gas laws), electromagnetism (voltage, resistance, inductance), and wave physics (frequency, wavelength, resonance). The Reynolds number calculator bridges physics and engineering — it's essential for anyone working with fluid flow in pipes, ducts, or channels.
Connections to Other Sections
Physics formulas show up everywhere. If you're working with chemical reactions, our chemistry section covers the thermodynamic side. For structural and materials calculations, construction has tools specific to building trades. And the pure math section has the underlying arithmetic tools — unit conversions, trigonometry, and logarithms — that feed into physics formulas.