Every Resistor: Color Code SMD

Every Resistor is the complete resistance suite built for electronic engineers, STEM students, technicians, makers, and electronics hobbyists. Identify, calculate, and design circuits with fast, reliable tools—100% offline.

Designed with a high-contrast layout, it is optimized for effortless readability on busy workbenches and lab environments.

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🚀 CORE TOOLS

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1. COLOR CODE CALCULATOR (3, 4, 5 & 6 BANDS)

• Comprehensive decoding for 3, 4, 5, and 6-band resistors (including temperature coefficient ppm/K).

• Dynamic visual resistor rendering that reflects selected colors in real time.

• Tolerance calculation (±%), nominal resistance, and exact minimum/maximum multimeter thresholds.

• Instant auto-scaling across Ohms (Ω), Kilohms (kΩ), and Megohms (MΩ).

2. SMD RESISTOR DECODER

• Full support for 3-digit (E24) and 4-digit (E96) marking codes.

• EIA-96 1% precision code standard decoding.

• Decimal letter codes (e.g., 4R7, R22, 4K7, 4M7).

• Breakdown Card: shows base digits, multiplier factor, tolerance, and color-band equivalents.

• SMD package size reference table (0402, 0603, 0805, 1206, 1210, 2010, 2512) with standard power ratings.

3. REVERSE RESISTANCE CALCULATOR

• Enter any custom resistance value to instantly find:

- Exact color band combinations for 4 and 5-band resistors.

- Equivalent SMD codes.

- Standard E12/E24 series verification and nearest commercial alternatives.

4. ELECTRICAL CIRCUIT CALCULATORS

• Ohm’s Law & Power: Calculate Voltage (V), Current (A, mA, µA), and Resistance, with suggested component power ratings (1/8W, 1/4W, 1/2W, 1W, 2W...).

• LED Resistor Calculator: Design current-limiting circuits with voltage presets by LED color and standard E24 resistor suggestions.

• Series & Parallel: Immediate equivalent resistance solver.

• Target Value Finder: Discovers the optimal 2-resistor combination (series or parallel) to achieve specific target values with minimal error.

• Voltage Divider: Output voltage, circuit current, and ratio, including standard logic level shift presets (5V to 3.3V, 12V to 5V).

5. FAVORITES & WORKFLOW EFFICIENCY

• 1-Tap save for frequently used values.

• Filter by type (Color Bands / SMD) and search saved records.

• Fast copy to clipboard for schematics and project notes.

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⚙️ WORKBENCH READY

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• 100% Offline: Works everywhere without network connectivity.

• Keep Screen On: Prevents display timeout while soldering or testing.

• Subtle tactile haptic feedback during selections.

• Native Dark and Light themes for phones and tablets.

• Privacy first: No account required, zero tracking permissions.