Resistor Code Calculator

Resistor color code & SMD calculator. Ohm's Law, LED, series, parallel resistors

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.

Made with ♥ by deve.net