Troubleshoot

Bench Tools & Calculators

Fast, offline tools for the values you compute a hundred times a day. Everything runs on-device.

Resistor color-code decoder

Pick the bands; read the value. Supports 4- and 5-band.

Bands

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SMD resistor-code decoder

Supports 3-digit (472), 4-digit (4702), R-notation (R10, 4R7) and EIA-96 codes 01–96 with Y, X, A–F multipliers (13C = 13.3 kΩ). Markings do not identify a part family or tolerance by themselves; check the manufacturer’s marking scheme.

Code

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Ohm’s law & voltage divider

Enter any two of V, I, R for Ohm’s law; or all three divider fields for V_out.

Voltage (V)

Current (mA)

Resistance (Ω)

Enter two values…

Vin (V)

R1 top (Ω)

R2 bottom (Ω)

Divider Vout—