Electronics Hub

Visual Resistor Color Code (4/5/6 bands), Ohm’s Law (V, I, R, P), and Series/Parallel resistor calculator — in one clean page.

Bands Notation Mode

Band 1 Band 2 Band 3

Multiplier Tolerance Temp. Coeff (ppm/K)

Value—

Tolerance—

Temp. Coeff—

Voltage (V) Current (I) Resistance (R) Power (P)

V—

I—

R—

P—

Resistors (Ω) Mode

Equivalent R—

Learn electronics faster

This hub combines three essentials: a visual resistor color code reader, an Ohm’s Law calculator, and a series/parallel equivalent resistor calculator. The resistor tool supports 4‑band, 5‑band, and 6‑band parts with tolerance and temperature coefficients. Ohm’s Law lets you solve V, I, R, P from any two known values. The series/parallel block handles quick homework checks or bench calculations.

Tips

Resistor bands: pick band colors, or switch to reverse mode and enter a target value to see matching bands.
Ohm’s Law: enter any two of V, I, R, P and press Solve — we compute the rest.
Series vs parallel: series adds directly; parallel uses reciprocals 1/R_eq=Σ(1/R_i).

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