Calculators
Physics calculators
51 tools
Mechanics, energy, thermodynamics, waves, and optics.
- Acceleration Calculator Solve constant acceleration a=(v−u)/t. Runs locally in your browser.
- Bernoulli Equation Calculator Incompressible Bernoulli along a streamline: solve P2, v2, or h2. Runs locally in your browser.
- Binary to Hex Converter Convert unsigned integers between binary and hexadecimal. Runs locally in your browser.
- Boyle's Law Calculator P₁V₁ = P₂V₂. Runs locally in your browser.
- Celsius to Kelvin Converter Convert between Celsius and Kelvin with hard absolute-zero checks. Runs locally in your browser.
- Centripetal Force Calculator F = m v² / r. Runs locally in your browser.
- Charles's Law Calculator V₁/T₁ = V₂/T₂. Runs locally in your browser.
- Colebrook Friction Factor Calculator Solve the Colebrook–White equation for Darcy friction factor f from Re and ε/D. Turbulent pipes Re≥4000. Runs locally. Not laminar 64/Re and not a Moody-chart lookup.
- Coulomb's Law Calculator Compute electrostatic force F = k·|q1·q2|/r² between point charges. Runs locally in your browser.
- Darcy–Weisbach Calculator Compute pipe head loss hf = f L v²/(2 g D) and Δp = ρ g hf from a given Darcy friction factor. Runs locally. Does not solve Colebrook for f.
- Displacement Calculator Δx = x − x₀. Runs locally in your browser.
- Doppler Effect Calculator f' = f (v±vo)/(v±vs). Runs locally in your browser.
- Drag Force Calculator Fd = ½ ρ v² Cd A. Runs locally in your browser.
- Efficiency Calculator Power efficiency η=Pout/Pin as fraction and percent. Runs locally in your browser.
- Electric Field Calculator E = k|Q|/r². Runs locally in your browser.
- Faraday's Law Calculator ε = N |ΔΦ| / Δt. Runs locally in your browser.
- Flow Rate Calculator Volumetric flow Q=A·v (or from pipe diameter). Runs locally in your browser.
- Force Calculator (F=ma) Solve Newton’s second law for force, mass, or acceleration. Runs locally in your browser.
- Free Fall Calculator Free-fall distance, speed, or time under constant g (optional initial velocity). Runs locally in your browser.
- Friction Calculator F = μ N. Runs locally in your browser.
- Half-Life Calculator Radioactive decay with N=N₀·2^(−t/T½). Runs locally in your browser.
- Heat Transfer Calculator Compute conductive Q=kAΔT/L or convective Q=hAΔT heat transfer rate. Runs locally in your browser.
- Hz to Rad/s Converter Convert between hertz and radians per second with ω = 2πf. Runs locally in your browser.
- Ideal Gas Law Calculator Solve the ideal gas law for P, V, n, or T with SI units. Runs locally in your browser.
- Impulse Calculator J = F Δt = Δp. Runs locally in your browser.
- Joule to eV Converter Convert energy between joules and electronvolts (exact SI factor). Runs locally in your browser.
- Kinetic Energy Calculator KE = ½ m v². Runs locally in your browser.
- kWh to Joules Converter Convert energy between kilowatt-hours and joules (1 kWh = 3.6 MJ). Runs locally in your browser.
- Lens Maker Calculator 1/f = (n−1)(1/R1 − 1/R2). Runs locally in your browser.
- m/s to km/h Converter Convert speed between metres per second and kilometres per hour (×3.6). Runs locally in your browser.
- Magnetic Field Calculator B = μ₀ I / (2π r). Runs locally in your browser.
- Momentum Calculator Solve linear momentum p=mv for p, m, or v. Runs locally in your browser.
- Newton to Lbf Converter Convert force between newtons and pound-force (1 lbf = 4.4482216152605 N). Runs locally in your browser.
- Potential Energy Calculator PE = m g h. Runs locally in your browser.
- Projectile Motion Calculator Compute range, apex height, and flight time for flat-ground projectile motion (no drag). Runs locally in your browser.
- Projectile Trajectory Calculator R = v₀² sin(2θ) / g. Runs locally in your browser.
- PSI to Bar Converter Convert between pound-force per square inch and bar. Runs locally in your browser.
- Reynolds Number Calculator Compute Re = ρvL/μ (or vL/ν) with laminar/turbulent guidance for pipes. Runs locally in your browser.
- Snell's Law Calculator n₁ sinθ₁ = n₂ sinθ₂. Runs locally in your browser.
- Sound Level Calculator L = 10 log₁₀(I/I₀). Runs locally in your browser.
- Specific Heat Capacity Calculator Solve Q = m c ΔT for heat, mass, specific heat, or temperature change. Runs locally in your browser.
- Stefan–Boltzmann Calculator Compute net gray-body flux q = εσ(Th⁴−Tc⁴) and optional Q = A·q. σ from CODATA 2018. Runs locally. Not Fourier/Newton heat-transfer and not a view-factor solver.
- SUVAT Calculator Constant-acceleration kinematics: solve v, s, a, or t (SUVAT). Runs locally in your browser.
- Tesla to Gauss Converter Convert magnetic flux density between tesla and gauss (1 T = 10000 G). Runs locally in your browser.
- Time Dilation Calculator Δt = γ Δτ. Runs locally in your browser.
- Torque Calculator Compute torque τ = r F sinθ. Runs locally in your browser.
- Velocity Calculator Solve average velocity v=s/t for v, s, or t. Runs locally in your browser.
- Viscosity Calculator τ = η du/dy. Runs locally in your browser.
- Watts to Horsepower Converter Convert power between watts and mechanical horsepower (1 hp = 745.6998715822702 W). Runs locally in your browser.
- Work and Power Calculator Compute work W=Fs cosθ and power P=W/t or Fv. Runs locally in your browser.
- Young's Modulus Calculator Y = (F/A) / (ΔL/L₀). Runs locally in your browser.