Resistor ColorCode Calculator

Content rating
Everyone
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

Anytime and anywhere, Resistor ColorCode Calculator is ready to accompany your needs. This featured product from Nishizumi-Lab carries the signature quality of APPzone. Check out the review at Tools.

How Can I Download 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.
Easily calculate color codes for 3 to 6-band resistors.
Updated on
Feb 15, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    about how developers declare sharing
  • No data collected
    about how developers declare collection

What’s new

Added a Favorites feature! You can now save frequently used resistor values and recall them anytime. Supports custom titles, notes, reordering, and deletion.