1. What is a Recessed Can Light Calculator?

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

Purpose: It helps homeowners and electricians determine how many recessed lights are required for proper room illumination.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( FC \) — Desired illumination level (foot-candles)
• \( \text{Area} \) — Room area (square feet)
• \( \text{Lumens per Light} \) — Light output of each fixture (lumens)

Explanation: The total required lumens (FC × Area) is divided by the lumens per light to determine how many fixtures are needed.

3. Importance of Proper Lighting Calculation

Details: Correct lighting ensures adequate illumination for tasks, enhances room aesthetics, and prevents energy waste from over-lighting.

4. Using the Calculator

Tips: Enter the desired foot-candles (typical values: 10-20 for living rooms, 30-50 for kitchens), room area in square feet, and lumens per light (default 800lm). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What are typical FC values for different rooms?
A: Living rooms: 10-20fc, Kitchens: 30-50fc, Bathrooms: 70-80fc, Offices: 30-50fc.

Q2: How do I find lumens per light?
A: Check the bulb packaging or manufacturer specifications (standard LED recessed lights are typically 600-1200 lumens).

Q3: Should I round up the result?
A: Yes, the calculator automatically rounds up since you can't install a fraction of a light.

Q4: Does this account for light placement?
A: No, this calculates total light needed. Spacing depends on ceiling height and beam angle.

Q5: What about room color and reflectivity?
A: Darker rooms may need 10-20% more lights, while very light rooms may need slightly fewer.