Resistor ColorCode Calculator

Calculating resistor color codes has never been easier. This ad-free tool supports all resistor types—3-band, 4-band, 5-band, and 6-band. Simply select the colors to instantly determine the exact resistance value, tolerance, and temperature coefficient (PPM). ■ Key Features ・Full Band Support: Supports 3, 4, 5, and 6-band (PPM) resistors. ・Instant Calculation: Results update in real-time as you select colors—no need to press a "Calculate" button. ・Multilingual Support: Available in Japanese, English, German, French, Chinese (Simplified/Traditional), Korean, Spanish, Portuguese, Russian, and Hindi. ・Dark Mode: Switch freely between eye-friendly Dark Mode and high-visibility Light Mode. ・Smart Save: Automatically remembers your last used theme and language settings. ・Privacy-Focused: We do not collect any personal information. ■ Use Cases ・A helpful tool for science and engineering experiments, DIY electronics, and academic study. ・Perfect for engineers to quickly design or verify electronic circuits. ■ How to Use ・Select Bands: Use the tabs at the top of the screen to choose the number of bands (3–6). ・Pick Colors: Tap each band on the resistor illustration to select the corresponding color. ・Get Results: The calculated resistance value will be displayed instantly at the top of the screen.