1. What is an LED Pixel Power Calculator?

Definition: This calculator estimates the total power consumption of LED pixels based on the number of pixels and power consumption per pixel.

Purpose: It helps lighting designers, electrical engineers, and DIY enthusiasts determine power requirements for LED installations.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Total power (watts)
• \( N \) — Number of LED pixels
• \( P_{pixel} \) — Power per pixel (watts)

Explanation: The total power is calculated by multiplying the number of pixels by the power consumption of each individual pixel.

3. Importance of LED Power Calculation

Details: Proper power estimation ensures adequate power supply sizing, prevents overloads, and helps with thermal management in LED installations.

4. Using the Calculator

Tips: Enter the number of pixels and power per pixel (default 0.06W for typical WS2812B LEDs). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical power per pixel value?
A: Common addressable LEDs like WS2812B use about 0.06W per pixel at full brightness white, but this varies by LED type and color.

Q2: Should I add extra capacity to the calculated power?
A: Yes, it's recommended to add 20-30% headroom to account for power supply efficiency and voltage drop in long runs.

Q3: How does color affect power consumption?
A: White (all LEDs on) consumes most power, while individual colors consume less (red typically ~0.02W, green ~0.04W, blue ~0.02W).

Q4: What about LED strips vs individual pixels?
A: The calculation works the same way - just multiply the number of addressable points by their individual power consumption.

Q5: How do I convert watts to amperage?
A: Divide total watts by your voltage (e.g., 5V or 12V) to get amps. Add 20% for safety margin.