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Resistor Calculator (Color Code & SMD)

Calculate resistance values interactively from 4, 5, and 6 band color codes, convert values back to color codes, or decode SMD markings (3-digit, 4-digit & EIA-96).

Band 1 (1st Digit)
Band 2 (2nd Digit)
Band 3 (3rd Digit)
Multiplier
Tolerance
Temp. Coefficient
103
SMD Resistance Value:10 kΩ
Code Type:3-Digit Standard (EIA)
Explanation:10 × 10³ Ω = 10,000 Ω = 10 kΩ
How does this tool work?

Interactive 4-, 5-, and 6-band resistor calculator with visual color band preview and SMD code decoder.

Supports bidirectional conversion between color bands and resistance values, tolerance ranges (Min/Max Ohm), temperature coefficients (PPM), and SMD resistor decoding (e.g. 103, 4702, 01C).

Where are my data processed?

100% Client-Side: Your data never leaves your browser.

All calculations, conversions, encodings, and file processing of this tool are executed exclusively locally via JavaScript on your client device. No inputs, passwords, cryptographic keys, texts, or uploaded files are ever sent to our servers or third parties. Once the page is loaded, the tool remains completely functional even offline.

No Server Upload100% GDPR CompliantRuns Offline in Tab

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