ResistorGo - Color Code & SMD

ResistorGo is a fast and accurate resistor calculator and decoder for engineers, technicians, and students.

Every tool is designed to take you to the next step automatically, no more table lookups or manual band counting.

The UI stays out of your way: no ads, no clutter. Open the app and get to work.

Key Features

Resistor Color Code Calculator:
Decode any color-banded resistor instantly. Supports 3, 4, 5, and 6-band components.

SMD Resistor Calculator:
Find the resistance value from any 3-digit, 4-digit, or EIA-96 code. R-notation supported.

Encoders:
Go the other way: enter an ohm value and get the corresponding color code or SMD code for each standard.

History:
Every decoded component is saved automatically, no need to check your inventory twice.

Result Sharing:
Each result gets a unique link. Copy and share it; the recipient doesn't need the app installed to view it.

Full Customization:
Light and dark mode, 3D or flat component images, color name display, and more.

Broad Compatibility:
Optimized for phones, tablets, large screens, landscape, split-screen, and windowed mode. Available in 22 languages.