Resistor Color Code Calculator

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Everyone
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About this app

Resistor Code is a fast electronics workbench for resistor identification.

COLOR BANDS
• Decode 4-band resistors, plus 3, 5 and 6-band (Pro)
• See resistance, tolerance and temperature coefficient
• Build color bands from a resistance value (Pro)

SMD MARKINGS (Pro)
• Decode 3-digit, 4-digit and R decimal markings
• Read results in Ω, kΩ and MΩ

Works offline. No account required.

Pro: unlimited use, all features unlocked. One-time purchase.
Decode 3–6 color bands, build bands from a value, and read SMD codes.
Updated on
Nov 1, 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
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  • No data collected
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What’s new

No more ads and a smaller download. The free version now has limits; Pro removes them.
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Everyone
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App support

About the developer
펜타랩
rock@pentarab.com
대한민국 서울특별시 강남구 강남구 테헤란로 328, 1동 4층 402호(역삼동, 동우빌딩) 06212
+82 10-5124-2995

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