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LED Series Resistor Calculator

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Calculate the current-limiting resistor value for LEDs with power rating recommendations

LED Series Resistor

Calculate current-limiting resistor for LEDs

+VsRLED
LED Parameters
V
V
mA
pcs

Common LED Forward Voltages:

Red: 1.8-2.2VGreen: 2.0-3.0VBlue: 3.0-3.5VWhite: 3.0-3.4V
Calculated Resistor
Exact Value
145 Ω
Nearest E24
150 Ω
Power Dissipated
58 mW
Min Power Rating
1/8W

Disclaimer

These calculators are provided for reference purposes only. While we strive for accuracy, always verify calculations with manufacturer datasheets and professional design tools before use in production. NSquare Bros is not liable for any errors or damages arising from the use of these tools.