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Lumens Formula:
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The Lumens calculation determines the total luminous flux needed for a room based on its area and the required illumination level measured in footcandles. This is essential for proper lighting design in Australian residential and commercial spaces.
The calculator uses the lumens formula:
Where:
Explanation: This formula calculates the total lumens required by multiplying the room area by the recommended footcandle level for that specific space type.
Details: Accurate lumens calculation ensures adequate lighting for tasks, enhances comfort and productivity, reduces eye strain, and helps in energy-efficient lighting design compliant with Australian standards.
Tips: Enter room area in square feet and the recommended footcandle level for your specific room type. Common footcandle values range from 10-50 for residential spaces and 30-100 for commercial/workspace areas.
Q1: What are typical footcandle values for different rooms?
A: Living rooms: 10-20 fc, Kitchens: 30-40 fc, Offices: 50 fc, Reading areas: 50-75 fc, Workshops: 75-100 fc.
Q2: How do I convert square meters to square feet?
A: Multiply square meters by 10.764 to get square feet (1 m² = 10.764 ft²).
Q3: What's the difference between lumens and lux?
A: Lumens measure total light output, while lux measures illuminance (lumens per square meter). 1 lux = 1 lumen/m².
Q4: Are there Australian standards for lighting levels?
A: Yes, AS/NZS 1680 series provides recommended illumination levels for various interior and exterior applications in Australia.
Q5: How does this help with LED lighting selection?
A: The calculated lumens value helps you choose the appropriate LED fixtures by ensuring their combined lumen output meets your room's lighting requirements.