Engineering calculators.
Ohm's law, beam load, fluid dynamics, and other structural and electrical calculations for engineers and students.
Newton's Second Law Calculator
Solve F = ma for force, mass, or acceleration — supports N, kN, lbf for force; kg, g, lb for mass; m/s², g-force, ft/s² for acceleration. Shows weight equivalent.
Voltage Divider Calculator
Find output voltage, divider ratio, current, power dissipation, and Thevenin output impedance for a two-resistor voltage divider — Ω, kΩ, MΩ units supported.
Resistor Color Code Calculator
Decode any 4-band through-hole resistor by selecting colour bands — instantly read the nominal resistance, tolerance (±1% to ±10%), and min/max range. Includes colour reference table.
Motor Torque Calculator
Compute torque from force & lever arm (τ = F × d × sin θ) or from power & RPM, apply a gear ratio, and check it against your required torque with AI insights.
Power Calculator
Calculate electrical power from V & I (P=VI), V & R (P=V²/R), or I & R (P=I²R) — shows all four circuit quantities in watts, milliwatts, and kilowatts.
Beam Deflection Calculator
Estimate maximum beam deflection for common load cases (simply supported or cantilever, point or distributed loads) and check it against the L/360 serviceability limit.