SMD Resistor Code Calculator

How It Works

The SMD resistor code is interpreted as follows:

• For 3-digit codes:
  • If it starts with 'R', the value is in ohms (e.g., 'R10' = 0.10Ω)
  • If 'R' is in the middle, it represents the decimal point (e.g., '1R0' = 1.0Ω)
  • If no 'R', the last digit is the multiplier (e.g., '103' = 10 * 10^3 = 10kΩ)

• For 4-digit codes:
  • Similar to 3-digit codes, but with an extra precision digit
  • 'R' can be in first, second, or third position to indicate decimal point
  • Without 'R', it follows the same principle as 3-digit codes (e.g., '1002' = 10kΩ)

The calculator converts the result to kΩ or MΩ for values 1000Ω and above.