Free velocity calculator — solve v=d/t, vf=vi+at, vf²=vi²+2ad, average velocity, and velocity from kinetic energy. Shows all unit conversions (m/s, km/h, mph, ft/s, knots) simultaneously with full step-by-step working
Free exponential growth and decay calculator – solve A = A₀(1+r)ᵗ and A = A₀eʳᵗ for any unknown. Generates values table, interactive graph, doubling time, half-life, and full step-by-step working
Free projectile motion calculator solve range, maximum height, time of flight and velocity for any two known inputs. Interactive animated trajectory, planet gravity selector, and step-by-step working.
Complete rotational kinematics equations calculator. Solve ? = ?0 + at, ? = ?0t + ½at², ?² = ?0² + 2a? for any unknown. Includes angular-to-linear converter, t = Ia dynamics, period & frequency — with full formula reference and worked examples
moment of inertia calculator find mass MOI and area MOI for rectangle, circle, rod, sphere, cylinder, ring, cone, and hollow sections. Includes section modulus, parallel axis theorem, and full formula reference tables.
pipe flow calculator find GPM by pipe size and pressure using Hazen-Williams. Includes PSI to GPM converter, 1/2 inch and 1 inch pipe flow tables, gravity flow and laminar flow calculators.
de Broglie wavelength calculator – find the matter wavelength of any particle using λ = h/mv. Includes electron wavelength from voltage, particle comparison, and relativistic calculator.
wavelengths and frequencies of all colors from violet (380 nm) to red (700 nm). Interactive spectrum tool, color lookup calculator, and reference tables.
wavelength to frequency calculator – convert nm to Hz, Hz to nm, meters to Hz, and MHz to nm instantly. Includes electromagnetic spectrum chart and photon energy calculator.
frequency to period calculator – convert Hz to seconds, milliseconds, microseconds and nanoseconds instantly. Includes period to frequency converter, reference table, and step-by-step examples.