SMD Resistor Calculator

📚 Reference Guide ▼

3-DIGIT CODE

472

= 4.7kΩ

47 × 10² = 4,700Ω

3-DIGIT CODE

103

= 10kΩ

10 × 10³ = 10,000Ω

4-DIGIT CODE

1002

= 10kΩ

100 × 10² = 10,000Ω

EIA-96

01A

= 100Ω

100 × 1 = 100Ω

EIA-96

38C

= 24.3kΩ

243 × 100 = 24,300Ω

R-NOTATION

4R7

= 4.7Ω

R is decimal point

R-NOTATION

R47

= 0.47Ω

R at start means < 1Ω

❓ Help & Instructions ▼

Code Formats

3-Digit Code: First 2 digits are significant figures, 3rd digit is the multiplier (power of 10). Example: 472 = 47 × 10² = 4,700Ω

4-Digit Code: First 3 digits are significant figures, 4th digit is the multiplier. Example: 1002 = 100 × 10² = 10,000Ω

EIA-96: 2 digits (01-96) map to resistance values, letter indicates multiplier. Multipliers: Z=×0.001, Y/R=×0.01, X/S=×0.1, A=×1, B/H=×10, C=×100, D=×1000, E=×10000, F=×100000

R-Notation: R represents the decimal point position. Examples: 4R7 = 4.7Ω, R47 = 0.47Ω, 10R = 10Ω

How to Use

1. Enter the SMD code from your resistor

2. The calculator automatically detects the format

3. View the resistance value with explanation

4. Use reverse mode to find SMD codes from resistance values