1. What is a LED Watts to Lumens Calculator?

Definition: This calculator converts the electrical power consumption (watts) of LED lights to their light output (lumens) based on efficacy.

Purpose: It helps consumers and professionals compare LED lighting products and understand their brightness relative to power consumption.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Lumens — Total light output (brightness)
• Watts — Electrical power consumption
• Efficacy — Light efficiency (lumens per watt)

Explanation: The formula calculates how much light (lumens) an LED bulb produces based on its power consumption (watts) and efficiency (efficacy).

3. Importance of Lumens Calculation

Details: Understanding lumens helps in selecting energy-efficient lighting that provides adequate brightness for your needs while minimizing electricity costs.

4. Using the Calculator

Tips: Enter the wattage of your LED bulb and its efficacy (default 100 lm/W). Typical efficacy ranges from 80-150 lm/W for most LED bulbs.

5. Frequently Asked Questions (FAQ)

Q1: What is efficacy in lighting?
A: Efficacy measures how efficiently a light source produces visible light (lumens per watt of electricity).

Q2: What's a good efficacy for LED bulbs?
A: Most modern LED bulbs have efficacy between 80-150 lm/W, with higher numbers indicating better efficiency.

Q3: How does this compare to incandescent bulbs?
A: Incandescent bulbs typically have efficacy of 10-17 lm/W, making LEDs 5-10 times more efficient.

Q4: Where can I find the efficacy of my LED bulb?
A: Check the product packaging or specifications sheet for lumens and watts, then divide lumens by watts.

Q5: Why use lumens instead of watts?
A: Lumens measure actual light output, while watts measure energy consumption. Two bulbs with same wattage can have different brightness.