How to use this calculator
- Enter the length of your room in feet.
- Enter the width of your room in feet.
- Enter the desired lumens per square foot based on your needs:
- 100-150: Very dim (good for bedrooms)
- 200-300: Dim (suitable for living rooms)
- 300-400: Moderate (good for kitchens and dining rooms)
- 400-750: Bright (good for home offices and home theaters)
- 750+: Very bright (suitable for commercial spaces)
- Click the "Calculate" button to see the total lumens required.
How to interpret the results
The calculator provides two key results:
- Total Area: The square footage of your room.
- Total Required Lumens: The total number of lumens you need to illuminate the entire room to your desired brightness level.
Additional Tips
When selecting a lumens per square foot value, consider:
- The primary activity that will take place in the room
- Personal preference for brightness levels
- The time of day when the room will be most frequently used
- The type of lighting fixtures you plan to use (different fixtures provide different light output)