⚙️ Engineering Calculators

Ohm's law, resistors, capacitors, power.

• ⚡

  Ohm's Law Calculator

  engineering

  Solve for voltage, current, or resistance using V = I × R.

  V = I × R ⇔ I = V / R ⇔ R = V / I ⇔ P = V × I

  Calculate
• 🎛️

  Resistor Color Code

  engineering

  Read a 4-band resistor from its color bands.

  R = (10·d1 + d2 + d3) × 10^multiplier (5-band adds a 3rd digit)

  Calculate
• 🔋

  Capacitor Energy Calculator

  engineering

  Capacitor stored energy and RC time constant.

  C_total (series) = 1 / (1/C1 + 1/C2 + ...); C_total (parallel) = C1 + C2 + ...

  Calculate
• 🔌

  Voltage Divider Calculator

  engineering

  Output voltage of a two-resistor voltage divider.

  Vout = Vin × R2 / (R1 + R2)

  Calculate
• 💡

  Electrical Power Calculator

  engineering

  Compute electrical power from V, I, and R in any combination.

  DC: P = V × I; AC single-phase: P = V × I × cos(φ)

  Calculate
• 🧰

  Resistor Network Calculator

  engineering

  Combine resistors in series, parallel, or a custom mix.

  Series: R = Σ Rᵢ; Parallel: 1/R = Σ 1/Rᵢ

  Calculate