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About Resistor Code Calculator

Resistor Code Calculator is the complete electronics toolkit for decoding resistor color bands, SMD codes, calculating Ohm's Law, designing LED circuits, and combining series/parallel resistor networks — all in one offline app.

★ FEATURES ★

▸ RESISTOR COLOR CODE CALCULATOR
Decode 4-band, 5-band, and 6-band resistors with a clear visual representation. Tap each band to change colors and instantly see the resistance value, tolerance, and temperature coefficient.

▸ REVERSE LOOKUP
Enter any resistance value and instantly get the matching color bands. Perfect when you need to find or sort a specific resistor.

▸ SMD RESISTOR DECODER
Decode SMD chip resistors in all common formats:
- 3-digit code (e.g., 103 = 10kΩ)
- 4-digit code (e.g., 1002 = 10kΩ)
- EIA-96 precision code (e.g., 01A = 100Ω)
- R-notation (e.g., 4R7 = 4.7Ω)

▸ OHM'S LAW CALCULATOR
Calculate voltage (V), current (I), resistance (R), and power (P) from any two known values. Includes all six fundamental Ohm's Law formulas.

▸ LED RESISTOR CALCULATOR
Find the perfect current-limiting resistor for your LED circuits:
- Single, series, and parallel LED configurations
- Preset LED types (red, yellow, green, blue, white, UV, IR)
- Power dissipation calculation
- Recommended power rating
- Nearest E24 standard value

▸ SERIES & PARALLEL COMBINATIONS
Combine up to 10 resistors in series or parallel. See the total resistance and the nearest standard E24 value.

▸ FAVORITES & HISTORY
Save frequently used resistor values for quick access. Browse your calculation history.

▸ 10 LANGUAGES SUPPORTED
English, Turkish, German, Spanish, French, Italian, Japanese, Brazilian Portuguese, Russian, Simplified Chinese.

★ WHO IT'S FOR ★

- Electronics hobbyists and makers
- Arduino, Raspberry Pi, and DIY enthusiasts
- Electrical engineering students
- Professional engineers and technicians
- Electricians and repair specialists
- Teachers and educators

★ WHY THIS APP ★

✓ 100% offline — no internet required
✓ No ads, no tracking, no data collection
✓ Clean, fast, modern interface
✓ Works on phones and tablets
✓ Material Design 3

Whether you're prototyping on a breadboard, repairing electronics, studying for an exam, or working on a professional project, Resistor Code Calculator gives you every resistor tool you need in one beautiful, lightning-fast app.

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