Online Tools
Everyday Electronics / Electrical / Mechanics / Thermodynamics / Electromagnetism Calculators
121 high-frequency electronics / electrical / mechanics / thermodynamics / electromagnetism calculators with SVG diagrams — enter parameters and get results instantly: resistor divider, DC-DC feedback resistors, TL431 feedback (flyback / forward), PCB impedance / current, motor sizing, power sizing, transformer, voltage drop, Coulomb’s law, Lorentz force, Faraday’s law, Carnot efficiency…
Mechanics
20 toolsNewton's Second Law Calculator (F=ma)
Compute the net force via F = m·a: enter mass and acceleration to get the force, with the weight W = m·g shown for reference.
F = m·a ｜ Weight W = m·g (g = 9.80665 m/s²)Pressure Calculator (P=F/A)
Compute pressure via P = F/A: enter the force and contact area to get results in Pa, kPa and MPa.
P = F / ATorque Calculator (τ=F·r·sinθ)
Compute the moment about an axis via τ = F·r·sinθ: enter force, lever arm and angle to get N·m and the effective lever arm.
τ = F·r·sinθWork Calculator (W=F·d·cosθ)
Compute work via W = F·d·cosθ: enter force, displacement and angle to get joules and kWh.
W = F·d·cosθMechanical Power Calculator (P=F·v)
Compute the instantaneous power of a traction force at constant velocity via P = F·v: enter force and speed to get W, kW and horsepower.
P = F·vKinetic Energy Calculator (Ek=½mv²)
Compute kinetic energy via Ek = ½mv²: enter mass and velocity to get joules and the equivalent drop height.
Ek = ½·m·v²Gravitational Potential Energy Calculator (Ep=mgh)
Compute gravitational potential energy via Ep = mgh: enter mass and height to get joules and the landing velocity.
Ep = m·g·hMomentum Calculator (p=mv)
Compute momentum via p = m·v: enter mass and velocity to get kg·m/s, with kinetic energy and equivalent impulse for reference.
p = m·vImpulse Calculator (J=F·Δt)
Compute impulse via J = F·Δt: enter force and duration to get N·s and the resulting momentum change.
J = F·ΔtSpring Force Calculator (Hooke's Law F=kx)
Compute spring force via Hooke's law F = k·x: enter stiffness and deformation to get the force and stored energy.
F = k·xElastic Potential Energy Calculator (Ep=½kx²)
Compute elastic potential energy via Ep = ½kx²: enter stiffness and deformation to get joules and the maximum release velocity.
Ep = ½·k·x²Spring-Mass Oscillator Period Calculator (T=2π√(m/k))
Compute the simple harmonic period via T = 2π√(m/k): enter mass and stiffness to get period, frequency and angular frequency.
T = 2π·√(m/k)Pendulum Period Calculator (T=2π√(L/g))
Compute the pendulum period via T = 2π√(L/g): enter length and gravity to get period and frequency (small-angle approximation).
T = 2π·√(L/g)Centripetal Force Calculator (F=mv²/r)
Compute the centripetal force via F = mv²/r: enter mass, velocity and radius to get the force and centripetal acceleration.
F = m·v²/r = m·ω²·rLinear & Angular Velocity Calculator (v=ωr)
Compute linear velocity via v = ω·r = 2πn·r/60: enter rotational speed and radius to get linear and angular velocity.
v = ω·r = 2π·n·r/60Torque-RPM-Power Calculator (P=τ·n/9549)
Convert motor torque, speed and power via P(kW) = τ(N·m)·n(rpm)/9549: pick any two known values to solve the third.
P = τ·n/9549 (P: kW · τ: N·m · n: rpm)Gear Ratio Calculator (i=z₂/z₁)
Compute the gear ratio via i = z₂/z₁: enter driving/driven tooth counts and input speed to get ratio, output speed and torque multiplication.
i = z₂/z₁ = n₁/n₂ = τ₂/τ₁Density Calculator (ρ=m/V)
Compute density via ρ = m/V: enter mass and volume (multiple units) to get kg/m³ and g/cm³, compared against water.
ρ = m / VFriction Force Calculator (f=μN)
Compute friction via f = μ·N: enter the coefficient and normal force (from direct input, mass or an incline) to get static/kinetic friction.
f = μ·NBuoyancy Calculator (Archimedes F=ρgV)
Compute buoyancy via Archimedes' principle F = ρ·g·V: enter liquid density and displaced volume.
F = ρ·g·V