Light Fixture / Lumens Calculator

Determine how many light fixtures or bulbs you need to properly light a room. Enter your room dimensions, pick a room type, and compare LED, CFL, incandescent, and halogen bulbs by wattage, bulb count, and annual cost.

Room Type

Room Length (ft)

Room Width (ft)

Ceiling Height (ft)

Pricing (edit to match local rates)

Electricity ($/kWh)

LED Bulb ($)

CFL Bulb ($)

Incandescent Bulb ($)

Halogen Bulb ($)

Total Lumens Needed

6,000

120 sq ft @ 50 lm/sq ft

Fixtures / Bulbs

800 lm bulbs (60W equiv)

Lowest Annual Cost

$40.67

CFL (bulbs + energy)

Bulb Type	Bulbs & Wattage	Annual Total Cost
LED	8 bulbs @ 9W each	$41.08
CFLBest value	8 bulbs @ 13W each	$40.67
Incandescent	8 bulbs @ 53W each	$108.59
Halogen	8 bulbs @ 40W each	$91.92

Best Value: CFL — $40.67/yrFor your 120 sq ft kitchen, CFL bulbs are the most cost-effective option. You need 8 bulbs at 13W each, using 104W total. Annual energy cost is $24.67 plus $16.00 for bulbs.

These are estimates based on general lighting recommendations. Actual needs vary with room color, natural light, fixture type, and personal preference. Consult a licensed electrician for specific fixture placement and wiring.