1. What is a Recessed Lighting Calculator?

Definition: This calculator estimates the number of recessed lights needed based on desired illumination level, room area, and light output.

Purpose: It helps homeowners and designers plan proper lighting layouts for rooms and spaces.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• FC — Foot-candles (desired illumination level)
• Area — Room area in square feet
• Lumens per Light — Light output of each fixture

Explanation: The total required lumens (FC × Area) is divided by the lumens provided by each light to determine quantity needed.

3. Importance of Proper Lighting Calculation

Details: Correct lighting ensures adequate illumination for tasks, creates desired ambiance, and prevents over/under lighting.

4. Using the Calculator

Tips: Enter desired foot-candles (default 30 for general rooms), room area, and lumens per light (default 800 for standard LED recessed lights).

5. Frequently Asked Questions (FAQ)

Q1: What are typical FC values for different rooms?
A: Living rooms (10-20), kitchens (30-40), bathrooms (70-80), offices (50-75).

Q2: How do I find my room's area?
A: Multiply length by width (in feet). For irregular rooms, break into rectangles.

Q3: What's the average lumens for recessed lights?
A: Standard 6" LED recessed lights typically provide 600-900 lumens.

Q4: Why does the result round up?
A: You can't install a fraction of a light fixture, so we always round up.

Q5: Should I add extra lights?
A: Consider adding 10-20% more for optimal spacing and coverage.