Lighting Design
Total lumens needed to light a room to a target illuminance.
lumens = target lux × area (m²)
Typical targets: living 150–300, kitchen 300–500, office 500 lux. Add fixtures to share this total.
Total lumens needed to light a room to a target illuminance.
Typical targets: living 150–300, kitchen 300–500, office 500 lux. Add fixtures to share this total.
The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.