1. What is an LED Watt Equivalent Calculator?

Definition: This calculator estimates the equivalent incandescent wattage for LED bulbs based on their luminous efficacy.

Purpose: It helps consumers understand how LED wattage compares to traditional incandescent bulbs in terms of brightness.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Incandescent Watts — Equivalent wattage of traditional bulb (W)
• LED Watts — Power consumption of LED bulb (W)
• Efficacy_LED — Luminous efficacy of LED (lm/W, typically 80-150)
• Efficacy_Incandescent — Luminous efficacy of incandescent (lm/W, typically 10-15)

Explanation: The formula compares the light output efficiency of LED versus incandescent bulbs to determine equivalent brightness.

3. Importance of Wattage Conversion

Details: Understanding equivalent wattage helps when replacing incandescent bulbs with LEDs while maintaining similar light levels.

4. Using the Calculator

Tips: Enter the LED wattage, LED efficacy (default 100 lm/W), and incandescent efficacy (default 12 lm/W). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is LED efficacy higher than incandescent?
A: LEDs convert more energy into visible light rather than heat, making them more efficient.

Q2: What's a typical LED efficacy value?
A: Most modern LEDs range from 80-150 lumens per watt, with 100 lm/W being a good average.

Q3: How accurate is this conversion?
A: It provides a good estimate, but actual brightness perception can vary based on bulb design and color temperature.

Q4: Can I use this for other bulb types?
A: Yes, you can compare any two light sources by adjusting the efficacy values accordingly.

Q5: Why don't LED packages just show incandescent equivalents?
A: Many do, but this calculator helps when comparing non-standard or high-efficiency LEDs.