Lumens, fixtures, power and monthly cost
Workshop Lighting Calculator
Estimate workshop fixture quantity, required lumens, connected power, monthly electricity and fixture cost.
Imperial and metric Rounded purchase quantities Cost estimate
Default project preview
15 fixtures
Required lumens
75,000
Installed illuminance
75 fc
Connected lighting load
0.68 kW
Monthly electricity
118.8 kWh
Calculator
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Enter the project details and calculate a rounded material estimate.
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Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Required lumens = area × target illuminance ÷ utilization ÷ maintenance. Fixtures are rounded up.
FAQ
Workshop Lighting Calculator questions
Why use utilization and maintenance factors?+
Not all light reaches the work plane and output declines over time.
Is average light enough for precision work?+
Detailed tasks may need dedicated task lighting.
Does this design fixture spacing?+
No. Use manufacturer photometric data.